Hire the best API Developers in Ukraine

Name: API developers
Brand: Upwork
Rating: 4.8 (231 reviews)

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Clients rate API developers

4.8/5

based on 231 client reviews

$56 hourly
Yan O.
- 5.0/5
- (6 jobs)
Hello World! My name is Yan and I am React.js/Node.js developer. I consider my self rather experienced both with front-end and back-end. I really like to know how and why everything works (or not..). The list of skills may look like: HTML, CSS, JAVASCRIPT, C#, XML, XSL, REACT.JS, NODE.JS, FLUTTER, ADOBE PHOTOSHOP, BLENDER, GIMP, INKSCAPE, UNITY3D. Opened for any reasonable project and ready to invoke all my skills for the best results

API Development
Flutter
Unity
ECMAScript 6
API Integration
JavaScript
Docker
Golang
CSS 3
HTML5
MongoDB
React
Node.js
jQuery
C#
$40 hourly
Andrii S.
- 4.6/5
- (11 jobs)
Hi 👋👋👋, I have 8+ years in Full-Stack Development. I build scalable web application with React / Angular / Vue.js / PHP / Laravel / Python. About me: ◉ Software Engineer with a Master's Degree in Computer Science. ◉ 8+ years of experience building complex solutions for clients from the USA, Canada, Australia, the EU, and the United Kingdom. ◉ Delivered over 7,600 man-hours in remote teams developing SaaS level 4/5 – multi-tenant, highly available, fault-tolerant platforms. ◉ An open-minded, goal-oriented individual with creative thinking, a positive attitude, and strong problem-solving skills. My Experience: ✅ 7+ years in Front-end development: HTML, CSS, Bootstrap, jQuery, Angular, React / Redux / VueJS and various additional libraries. ✅ 8+ years in Back-end development: Python, PHP / Laravel, REST API, Redis, SQL and NoSQL Databases, Firebase, AWS, Google Cloud Platform, etc. I've developed a wide range of React applications for healthcare, retail, construction, social network, fitness, e-commerce, food delivery, education industries with geo-location, live-chat, work-force management, accounting, invoicing and other modules. I offer: 1) Pre-launch support (Graphic design, Back-end API development, Front-end development, Admin Panel or CMS, Testing and Quality Assurance, App Store Submission and Approval) 2) Post-launch support (Maintenance/Bug Fixing, Further Extensions).

API Development
Angular
AWS Fargate
AWS Lambda
HTML
Node.js
Laravel
MongoDB
PHP
Vue.js
MySQL Programming
React
$40 hourly
Mikhail D.
- 5.0/5
- (16 jobs)
SENIOR DEVOPS ENGINEER & LARAVEL DEVELOPER YOU CAN RELY ON ✅ 💼 7+ years of experience in DevOps, AWS, Laravel & scalable Laravel architecture 🌟 5-star feedback | Cloud infrastructure, CI/CD, and automation — done right ⚙️ AWS • Docker • Kubernetes • Terraform • GitHub Actions • Monitoring • Zero-Downtime Deployments Hello to my future clients and collaborators! I’m Mykhailo — or simply Mike — a Senior Laravel Developer, Full Stack Developer, DevOps and Technical Advisor with 13+ years of experience building scalable, secure, and high-performance applications for businesses across the USA and Europe. Back when I had 5+ years of experience, I focused on clean code, mastering PHP development and diving deep into the Laravel ecosystem. Now, with over 10 years of hands-on expertise, I lead complex full stack platforms, guide development teams, and implement systems that scale businesses forward — all powered by Laravel. 🔧 What I Help With: 🔹 Laravel & Full Stack Web Development I’m a Laravel-focused Full Stack Developer who builds from backend to modern JS-based frontend. I specialize in: - Laravel development with Livewire, Filament, and Symfony - Frontend (Vue.js, React.js, Alpine.js) and Tailwind CSS - MySQL, PostgreSQL, MariaDB integration - Reusable, scalable code patterns and domain-driven design - Clean, optimized PHP development using Laravel best practices 🔹 RESTful & GraphQL API Development - Stripe, Firebase, Xero, Google Drive, Microsoft Graph, OpenAI API integration with Laravel - RESTful & GraphQL API development in Laravel - WebSockets for real-time Laravel applications - Robust API-driven systems implemented with Laravel and PHP 🔹 SaaS Architecture - Full stack Laravel-based SaaS solutions - Scalable backend design in Laravel - Booking systems, multi-tenant apps, admin dashboards - ERP integration, automation — all in Laravel 🔹 DevOps Engineering & Infrastructure - As a seasoned DevOps engineer, I’ve deployed 25+ AWS infrastructures using Terraform and CloudFormation - I build Dockerized systems with automated pipelines using GitHub Actions and GitLab CI - Scalable solutions for startups, scaleups, and enterprise — all DevOps-driven 🔹 Performance, Monitoring & Code Quality - Code optimization, database tuning, frontend performance in Laravel - Logging with ELK Stack, Prometheus, Grafana for Laravel projects - Testing with PestPHP, PHPUnit for Laravel applications - Git workflows, CI pipelines, and code reviews using Laravel context 💡How I Work as DevOps: - Infrastructure-First: I build AWS DevOps architectures that are secure, scalable, and cost-efficient from day one. - Automation-Focused: I streamline CI/CD, monitoring, and recovery processes to eliminate manual effort and reduce risk. - Long-Term Reliability: I ensure your infrastructure stays resilient post-launch through proactive monitoring, updates. ⚙️ Tech Stack Summary: - Backend: Laravel 10, PHP 8.x, FilamentPHP, Livewire, REST API, GraphQL, Redis, WebSockets, Sanctum, Passport - Frontend: Vue.js, React.js, Inertia.js, Alpine.js, Tailwind CSS, Vuetify, Bootstrap - Databases: MySQL, PostgreSQL, MariaDB, MongoDB, Redis (for queues & cache) - AI & Integrations: OpenAI API, Stripe, Firebase, Xero, Google Drive, Twilio, SendGrid - DevOps & Cloud: Docker, Kubernetes, GitHub Actions, GitLab CI/CD, Bitbucket Pipelines, AWS (EC2, S3, RDS, Lambda, CloudFront, Route 53), Terraform, CloudFormation, DigitalOcean, Cloudflare - Monitoring & Logging: Prometheus, Grafana, ELK Stack, CloudWatch, Sentry, New Relic - Security & Performance: Nginx, Fail2ban, UFW, SSL/TLS, disaster recovery, server hardening, autoscaling, zero-downtime deployments 🚀 Why Clients Choose Me: - 9+ years of Laravel & PHP development - 7+ years in DevOps, cloud automation & CI/CD - Delivered 30+ DevOps projects and 20+ complex Laravel systems - Expert in full-stack Laravel apps with Vue, React, and REST/GraphQL APIs - Architected 25+ AWS infrastructures with high availability & cost optimization - Built 15+ CI/CD pipelines to support fast, secure, and automated deployments - Experienced with multi-tenant Laravel SaaS platforms and microservices - Laravel performance tuning, job queues (Horizon), scheduler & workers setup - Laravel upgrade specialist: legacy to Laravel 9/10 migrations - Implemented secure auth, rate limiting, queue failover, API versioning - Integrated Terraform + Docker for full infrastructure-as-code pipelines - Monitoring-first DevOps: Prometheus, CloudWatch, alerts, rollback strategies - Hands-on with DevSecOps, Laravel vulnerabilities patching & PCI compliance - Scaled Laravel apps to handle 100K+ concurrent users and 1M+ monthly API calls Also experienced with: - Laravel Breeze, Jetstream, Nova, Cashier - Role-based access, API tokens, 2FA - Server provisioning with Laravel Forge & Envoyer - CI/CD for monolith & microservice Laravel apps Let’s talk if you're looking for a Laravel & DevOps engineer who delivers real business value.

API Development
Docker
Communication Skills
SaaS Development
Tailwind CSS
Payment Gateway Integration
CI/CD
Amazon Web Services
Vue.js
React
DevOps
MySQL
Web Development
PHP
Laravel
$35 hourly
Oleksii N.
- 5.0/5
- (12 jobs)
If you’re ready to turn your MVP idea into a reality, I’m here to make it happen with Bubble.io—the ultimate no-code solution for efficient, rapid development. As a certified Bubble.io developer with 2+ years on the platform, I specialize in helping startups and businesses launch MVPs quickly and affordably, without compromising on quality or functionality. With over 4 years in web development, including experience with WordPress and Laravel, I’m part of Devix Digital—a dedicated team of developers, designers, and project managers. Together, we build high-performing web applications and e-commerce sites that are responsive, modern, and fully optimized for user engagement. Why Bubble.io is Perfect for Your MVP Bubble.io offers a powerful no-code platform to quickly bring your vision to life, making it ideal for testing and iterating in the market. With my certification and experience, I can help you build a functional, scalable MVP without the high costs and long timelines of traditional development. What I Can Offer You: 1️⃣ Bubble.io Expertise – As a certified Bubble.io developer, I’ll leverage no-code power to create a fully-featured, scalable web app that brings your vision to life. 2️⃣ Custom WordPress Development – From e-commerce to corporate applications, I bring 4+ years of experience in custom themes, plugins, and complex integrations to meet your unique needs. 3️⃣ Laravel Proficiency – For projects that require a robust backend, I’m skilled in Laravel, building high-performance web applications with tailored functionalities. 4️⃣ Optimized Performance – I prioritize fast loading times and smooth user experiences through database optimization, code efficiency, and caching strategies. 5️⃣ Security & Compliance – Security is key. I implement best practices to protect your application and ensure compliance with industry standards. My Technology Stack: ⏺ Bubble.io – Certified expert in no-code development ⏺ WordPress, Laravel, PHP, MySQL ⏺ RESTful APIs, JSON ⏺ Git version control ⏺ HTML, CSS, JavaScript, JQuery Whether you’re looking for a fast, effective way to launch your MVP or a dependable partner for your long-term project, I’m here to support you. Message me today to discuss your project requirements, and I’ll be happy to provide a detailed proposal and quote. Let’s make your vision a reality!

API Development
Full-Stack Development
UX & UI
Bubble.io
Ecommerce Website
Ecommerce
WooCommerce
WordPress Backup
API
jQuery
Laravel
SQL
MySQL
JavaScript
WordPress
$42 hourly
Illia F.
- 5.0/5
- (18 jobs)
𝐑𝐢𝐠𝐡𝐭 𝐧𝐨𝐰 𝐈 𝐚𝐦 𝐜𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐢𝐧𝐠 𝐨𝐧𝐥𝐲 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐨𝐩𝐩𝐨𝐫𝐭𝐮𝐧𝐢𝐭𝐢𝐞𝐬. 🥇EXPERT-VETTED - Only 1% of talents get this badge 💯100% JOB SUCCESS 🏆 TOP RATED PLUS - Top 3% of companies With 12+ years of industry experience, I specialize in delivering scalable, highly reliable web and mobile applications. For instance, I've delivered projects from a video streaming platform with auto-scaling capabilities to a restaurant ordering and check-out solution, which has grown from 0 to 5000 venues with more than 50000 unique users per day (over 2 million monthly). My expertise extends to web, PWA, and mobile app development. 💡Here’s how I can help you succeed: I’m a full stack, senior web developer, dedicated to crafting scalable, innovative, and user-focused solutions that elevate your business. From initial concept to deployment of fullstack software, with previous project manager expertise, I guide every step of the process, ensuring your app or website is optimized for functionality and design. Backend Development: being a software engineer, proficient in Python, FastAPI, Django, Flask, and Node.js | mern stack, I design and optimize APIs, implement microservices, and ensure scalable architectures. Frontend Development: skilled in React, TypeScript, JavaScript, HTML5, and CSS, and other various front end technologies, I create intuitive, responsive, and visually appealing user interfaces. Mobile Development: skilled app developer in React Native, TypeScript, JavaScript, Expo, Firebase, and other various technologies, I create intuitive, responsive, and visually appealing cross platform iOS app and Android applications. Optimized Database Management: Extensive experience with PostgreSQL, MySQL, and SQL-based optimizations for high-performance applications. Cloud & DevOps Expertise: Hands-on experience with AWS, Docker, and cloud deployments, ensuring seamless scaling and infrastructure management. Security & Performance: I implement advanced security measures, load balancing, and performance optimization techniques to ensure robust and stable applications. I don’t do projects for the integrations only separately. I do integrations when it’s included in the bigger projects. 📈 Industries & Applications: Hospitality - Enhance guest experiences with innovative hotel and restaurant apps. Food & Beverage | FoodTech - Streamline delivery services and restaurant management, online ordering, KDS, and POS terminals. Travel - Develop travel apps that make planning and booking a breeze. Construction & Real Estate - Manage projects and properties efficiently with custom apps. Education & EdTech - Create interactive learning platforms and educational tools, CRM. Healthcare & Telehealth & Telemedicine - Improve patient care with telehealth and health management apps. Fitness & Sport - Build fitness tracking, workout, and sport management apps. Streaming - Develop high-quality streaming applications for entertainment. FinTech & Finance & Banking - Secure and user-friendly financial and banking solutions. 🔧 Skills & Expertise: Front end: React.js, React Native, Next.js, JavaScript, TypeScript, Bootstrap, jQuery, HTML, CSS Back end: Python, Django, FastAPI, Flask, Node, Nest.js, Express.js Cloud Services: AWS (Amazon Web Services), AWS Lambda Database Architecture: MySQL, PostgreSQL, MongoDB API Integration: RESTful APIs, GraphQL Here are a few reasons you will enjoy our collaboration: 📌 We don’t just build - we think ahead to help you avoid pitfalls and succeed smoothly. 📌 Day or night, we’re on call—always ready to jump in when you need us. 📌 The initial maintenance is included in every contract to ensure your project starts strong. 📌 Your project stays yours, from code to credentials. Ready to take your project to the next level & looking for a full-stack developer? Invite me to your job or reach out to get a detailed estimation of your project. Get custom software crafted with passion!

API Development
PostgreSQL
Next.js
Progressive Web App
Web Application
Amazon Web Services
Node.js
FastAPI
Django
Python
API Integration
JavaScript
React Native
TypeScript
React
$45 hourly
Denis N.
- 5.0/5
- (24 jobs)
𝑰𝒎𝒂𝒈𝒊𝒏𝒆 𝒘𝒉𝒂𝒕 𝒚𝒐𝒖 𝒄𝒐𝒖𝒍𝒅 𝒂𝒄𝒉𝒊𝒆𝒗𝒆 𝒘𝒊𝒕𝒉 𝑨𝑰! I design and implement 𝒄𝒖𝒔𝒕𝒐𝒎 𝑨𝑰 𝒔𝒚𝒔𝒕𝒆𝒎𝒔 that empower 𝑺𝑴𝑩𝒔 and 𝒔𝒕𝒂𝒓𝒕𝒖𝒑𝒔 to innovate and 𝒈𝒓𝒐𝒘. My AI powered systems helps online businesses and products that want to streamline operations and increase user engagement by automating or simplifying customer interactions with the key features by using AI automation or personal AI assistant that provides 24/7 support for each client. ✅ My expertise includes: - Desing AI solutions - Chatbot development - Prompt engineering - Models fine-tuning - RAG system - ChatGPT / AI API intergations - AI Voice Agents - AI backend development ❗ My services includes 🔎 Search personal AI power: We discuss and unlock the power of AI by identifying opportunities to streamline your processes, improve efficiency, and automate tasks with custom AI solutions tailored to your needs. 🎯 Custom AI Solution Design: I design AI systems from the ground up, creating tailored solutions that address your specific business challenges. 💻 Chatbot Development & Prompt Engineering: I build intelligent chatbots that use advanced language models like GPT, Gemini, and Code Llama to deliver smart, responsive, and context-aware interactions. ✈️ AI Model Fine-Tuning & RAG Systems: I fine-tune AI models to fit specific tasks or build Retrieval-Augmented Generation (RAG) systems that enhance the accuracy and relevance of AI responses for your tasks using your specific data. 🎙️ AI Voice Agents: I create AI-powered voice agents and integrate AI tools with third-party APIs to deliver seamless voice interactions for customer service, virtual assistants, and other applications. Frameworks I work with: LangChain, LangGraph, Llamaindex, OpenAI, Cloud (Entropiq), Grok, Ollama, Transformers, FastAPI, Vector DBs (Pinecone, Weviate, Chroma), RAG systems, Deepgram, 11Labs, Vapi.ai, Hume.ai. Deployment: Docker, AWS (ECR, EC2, S3, Lambda), Google -------------------------------------------------------------------------------------------------------------------- If you want to discuss what jobs AI will replace in the near future 😁 (or you require a custom AI solution), get in touch with me and I will share with you me expertise to streamline your product.

API Development
Machine Learning
AI Model Development
Chatbot
AI Development
ChatGPT API Integration
Agent GPT
ChatGPT
Prompt Engineering
AI Agent Development
Chatbot Development
Artificial Intelligence
Large Language Model
Natural Language Processing
Python
$35 hourly
Mykyta S.
- 5.0/5
- (11 jobs)
I help startups rapidly deploy and scale their SaaS applications through a development process that allows for on-the-fly integration of new changes and market testing 🛠️ 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗜𝗘𝗦 ✓Back-End (Ruby, Python, Node) ✓Front-End (ReactJS, VueJS) ✓Full-Stack Development ✓Mobile Applications Development (ReactNative) ✓API Development and Integration ✓Database Design and Management ✓HTML & CSS ✓RESTful Services ✓Version Control (Git) ✓Agile Methodologies ✓Testing and Debugging ✓Performance Optimization ✓Security Implementation ✓Deployment and Hosting Setup ✓Responsive Design 🔥𝗤𝗨𝗜𝗖𝗞-𝗟𝗔𝗨𝗡𝗖𝗛 𝗠𝗩𝗣: 𝗧𝗨𝗥𝗡 𝗬𝗢𝗨𝗥 𝗜𝗗𝗘𝗔 𝗜𝗡𝗧𝗢 𝗠𝗩𝗣 𝗧𝗛𝗔𝗧 𝗖𝗢𝗡𝗩𝗘𝗥𝗧𝗦🔥 I will provide you with a custom offer once we discuss your project in detail. For now, please review my current offer to understand what I can provide—consider this as a reference. ✓ Discovery phase: Get clear esstimates on Your project. ✓ Full Cycle Web & Mobile Application Development ✓ Database Design and Management ✓ API Development and Integration ✓ Regular Code Reviews and Testing ✓ Documentation and User Manuals ✓ Deployment and Hosting Setup ⭐𝗕𝗘𝗡𝗘𝗙𝗜𝗧𝗦: ✓ Budget confidence with fixed price model ✓ Rapidly validate product ideas with a lean MVP approach. ✓ Quickly gather user feedback to iterate and improve. ✓ Minimize development time while maximizing impact. ✓ Efficiently allocate resources to core functionalities. + 🎁𝗛𝗨𝗚𝗘 𝗕𝗢𝗡𝗨𝗦𝗘𝗦: 🎁 Security Implementation: Ensure your application is protected with robust security measures, including encryption, authentication, and regular security audits. 🎁 Performance Optimization: Maximize the speed and efficiency of your application with in-depth performance tuning and load testing. 🎁 Regular Backups: Protect your data with automated backup procedures to prevent data loss and ensure quick recovery in case of any issues. 🎁 Post-Launch Support: Enjoy an additional 30 days of post-launch support to ensure smooth operation and address any initial issues. 🤝 𝗠𝗬 𝗚𝗨𝗔𝗥𝗔𝗡𝗧𝗘𝗘: I am committed to delivering your project on time and with the highest quality. If I fail to meet the agreed deadline or the quality standards we set, I will refund you 100% of the cost and continue working until you are completely satisfied, ensuring all necessary files are delivered promptly. 📞 Free MVP Strategy Session: Discuss your product idea and get a clear roadmap for your MVP. Identify key steps to quickly validate and launch your product with minimal effort. Act now, risk-free! 💬 𝗟𝗘𝗧’𝗦 𝗦𝗧𝗔𝗥𝗧 𝗔 𝗖𝗛𝗔𝗧 𝗧𝗢 𝗗𝗜𝗦𝗖𝗨𝗦𝗦 𝗛𝗢𝗪 𝗧𝗢 𝗕𝗥𝗜𝗡𝗚 𝗬𝗢𝗨𝗥 𝗜𝗗𝗘𝗔 𝗧𝗢 𝗟𝗜𝗙𝗘 𝗔𝗡𝗗 𝗟𝗔𝗨𝗡𝗖𝗛 𝗬𝗢𝗨𝗥 𝗠𝗩𝗣 𝗙𝗔𝗦𝗧𝗘𝗥! 🚀 Just drop a 'Hi' in the chat, and I'll take it from there!

API Development
React
NodeJS Framework
Python
Web Application
JavaScript
SQL
Vue.js
Web Application Development
SaaS Development
SaaS
Ruby on Rails Stack
Ruby
Full-Stack Development
Minimum Viable Product
$45 hourly
Dmytro K.
- 5.0/5
- (51 jobs)
Hello, Upworker! 😊🚀 🌐 𝗔𝗯𝗼𝘂𝘁 𝗠𝗲: 🌐 👋🌌 I'm your Full Stack web development wizard, ready to weave the magic of the digital realm into every project. 🌐💻 In this rapidly evolving tech universe, I've embarked on a quest to craft virtual masterpieces using the most cutting-edge technologies. My toolkit is brimming with the likes of React.JS, Next.JS, PHP Laravel, and WordPress, allowing me to turn the complex web of programming into a tapestry of innovation and functionality. 🕸️🛠️ 💡𝗠𝘆 𝗠𝗮𝗴𝗶𝗰 𝗧𝗼𝗼𝗹𝗸𝗶𝘁💡 I don't just build websites; I create digital experiences that resonate. From the minimalist charm of simple websites to the intricate layers of SaaS platforms, CRM/ERP systems, E-Commerce shops, Landing pages, to WordPress wonders, I've got it all under my coding spell. 📜🔮 And my team! Oh, they're not just any team. They're a coven of designers, testers, and developers, each a master in their own right, ready to conjure up any web service you desire. 👨‍💻👩‍💻 🌟 Services I Offer 🌟 🔸 Web/App Design Alchemy: UI/UX, Graphics, Wireframing, Branding – you name it, we design it. 🔸 Custom Web Development: Whether it's Front End, Back End, Fullstack, or DevOps, we've got the magic wand for every tech trick. 🔸 Product Development: Need an MVP? Want tech consultancy? We turn ideas into reality. 🔸 Discovery: Research, Market Analysis, Planning – we navigate the labyrinth of the digital marketplace. 🔸 And More: QA, Tech Support, SEO strategies, campaign organization, content managing – we've got all the potions in our cauldron. 💡 My Enchanted Software Realm 💡 📌 Simple websites to grand SaaS platforms 📌 CRM/ERP systems that act like a crystal ball for your business 📌 E-Commerce shops that sell like enchanted bazaars 📌 Landing pages that captivate like a siren's song 📌 WordPress sites that are anything but ordinary 📌 Custom Dashboards – your command center in the digital world Ready to start your web development journey like never before? Let's weave your vision into the fabric of the internet! 🚀🌟 Ping me for a magical conversation about your ideas. You'll get a free consultation, project estimation, and the first spellbinding plan of your digital adventure. 💬📈🆓

API Development
WooCommerce
WordPress
PHP
React
JavaScript
Web Application Development
SaaS Development
Back-End Development
Front-End Development
Full-Stack Development
API Integration
Web Application
Web Design
Web Development
$32 hourly
Vlad M.
- 5.0/5
- (2 jobs)
I am a Senior Full-Stack engineer with over 15 years of experience in Ruby | RoR | React.js | Node.js. I am a part of the Roobykon team. As a full-cycle software engineering company, we can help you at any stage of development. If you only start working on your product, modernize it, continue improving it, or need help with a launch, we have the expertise to cover all your needs. 🏆 Area of expertise: ➤ E-commerce (including multi-vendor marketplaces and product/service platforms) ➤ FinTech (payment gateways, escrow systems, and custom financial solutions) ➤ CRM Systems (tailored customer relationship management platforms) ➤ Logistics (marketplaces for delivery, warehousing, and transportation) ➤ Marketplace Development (B2B, B2C, peer-to-peer, product, service, and rental-based platforms using Sharetribe and custom-built solutions) ➤ Travel and Tourism (booking platforms for accommodations, experiences, and tours) ➤ Car Rent and Rental Websites (multi-vendor vehicle rental platforms) ➤ Retail (multi-vendor e-commerce platforms, digital storefronts) ➤ Construction and Real Estate (property listing marketplaces, contractor bidding platforms) ➤ Aviation (charter services, private jet booking platforms) and boat rental (yacht, boats, jet ski) ➤ Entertainment and Social Networking (event booking, ticketing, and social interaction platforms) ➤ Marketing and Advertising (customized marketplaces for ad placements, influencer marketing platforms) ➤ Insurance (platforms for comparing and purchasing insurance policies) ➤ Industrial (B2B marketplaces for industrial goods and services) ➤ Marketplaces for hospitality services, catering, and restaurant supplies ➤ Mental Health and Healthcare (platforms for telemedicine, therapy services, healthcare provider listings) ➤ Management (resource management platforms for HR, procurement, and project collaboration) 👉 About me ✔️ Applied skills in software development, architecture, design, and support for new and existing products. ✔️ Extensive knowledge of Web development, from concept through implementation and optimization. ✔️Good team player, creative and detail-oriented, with strong analytical skills and with good ability to collaborate with team members for code and design reviews. ✔️Skilled in troubleshooting with good organizational and interpersonal skills. ✔️Self-motivated worker with a concentration on business goals and end-user experience. 👉 Technology stack: ✔️ Ruby, Ruby on Rails ( Ruby on Rails Framework and Development ) ✔️ Node ( Node.js , NodeJS , Express.js ) ✔️ API (REST API development), GraphQL ✔️ React ( ReactJS , React.js ) ✔️ React Native (ReactNative) ✔️ Liquid ✔️ Firebase | MySQL | MSSQL | PostgreSQL Programming | MongoDB | DynamoDB ✔️ AWS | Digital Ocean If you're looking for a reliable development partner who is not afraid of big complex challenges, just drop me a line!

API Development
PHP
Back-End Development
Full-Stack Development
Web API
React Native
Next.js
HTML
JavaScript
Web Application
React
Responsive Design
Node.js
Ruby on Rails
Web Development
$45 hourly
Denys M.
- 5.0/5
- (27 jobs)
🚀 𝐓𝐫𝐚𝐧𝐬𝐟𝐨𝐫𝐦 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐰𝐢𝐭𝐡 𝐜𝐮𝐭𝐭𝐢𝐧𝐠-𝐞𝐝𝐠𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. I bring speed, precision, and innovative thinking to every task. Ready to experience the difference? Click the «𝐈𝐍𝐕𝐈𝐓𝐄» button to be in 100% of satisfied clients! ⭐️⭐️⭐️⭐️⭐️ "Denys did an amazing job. He's a very talented developer. The communication was fantastic and the work was completed very quickly. Everything I included in the specs was completed with 100% accuracy!" – Jason T. ⭐️⭐️⭐️⭐️⭐️ "Very motivated to execute on the task at hand. Always taking the initiative to progress the project. Highly recommended. I'm looking forward to working with him soon." – Aswin M. ⭐️⭐️⭐️⭐️⭐️ "Denys is very skillful and I would definitely recommend working with him on projects." – Adrian B. 🖇 𝐌𝐲 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬: - Backend Development - API Development/Third-party API integrations - Database Architecture and Management (SQL/NoSQL) - Serverless Architecture - Cloud Solutions – AWS, GCP, Azure - Microservices Architecture - Custom Software Development - Performance Optimization - Artificial Intelligence - Machine Learning Solutions - OpenAI Integrations - LLM Integrations - AI/ML Model Training and Deployment - Chatbot Development (Telegram/WhatsApp) 📋 𝐒𝐭𝐚𝐠𝐞𝐬 𝐨𝐟 𝐰𝐨𝐫𝐤: - Requirement analysis - Solution architecture design - Implementation of core functions and modules - Testing and debugging - Documentation and client training - Support and maintenance Ready to get started? Click the «𝐈𝐍𝐕𝐈𝐓𝐄» button at the top to collaborate with me. 🔑 Keywords: Backend Development, Microservices, RESTful APIs, GraphQL, Serverless Architecture, AWS Lambda, Google Cloud Functions, Azure Functions, Docker, Kubernetes, Containerization, DevOps, CI/CD, Jenkins, Docker Compose, Distributed Systems, Scalability, Performance Optimization, Database Design, SQL Databases, NoSQL Databases, MongoDB, PostgreSQL, MySQL, Redis, Elasticsearch, Event-Driven Architecture, Load Balancing, VPN, Network Security, Cryptography, Web Security, Authentication, Authorization, OAuth, JWT, API Gateway, WebSockets, GRPC, Prometheus, Grafana, Logging, Monitoring, Alerts, Infrastructure as Code (IaC), Terraform, Ansible, Puppet, Chef, CloudFormation, Django, Flask, FastAPI, Python, OpenID Connect, SSO, Rate Limiting, Throttling, Circuit Breaker, High Availability, Fault Tolerance, RESTful Web Services, Data Warehousing, ETL, Big Data, Real-Time Data Processing, Stream Processing, Message Queues, Data Lakes, Business Logic, Middleware, API Design, API Documentation, Swagger, OpenAPI, Continuous Deployment, Continuous Integration, Load Testing, Stress Testing, Scalability Testing, Security Testing, API Rate Limiting, Rate Throttling, GDPR Compliance, HIPAA Compliance, OAuth 2.0, SAML, RBAC, MAC, Caching Strategies, CDN, Content Delivery, Webhooks, Data Serialization, Protocol Buffers, MessagePack, Thrift, REST Principles, SOAP Services, Legacy System Modernization, System Integration, ERP Integrations, CRM Integrations, Business Process Automation, Workflow Management, Remote Configuration, Feature Toggles, Logging Aggregation, Error Tracking, Incident Management, ITSM, SLA Management, Compliance Audits, High Performance Computing (HPC), Code Reviews, Pair Programming, Test-Driven Development (TDD), Behavior-Driven Development (BDD), Agile Methodologies, Scrum Practices, Kanban Boards, Project Management Tools, JIRA, Trello, Confluence, Performance Benchmarking, Profiling Tools, SQL Tuning, Indexing Techniques, Stored Procedures, Functions, Database Replication, Data Synchronization, Sharding, Query Optimization, Schema Design, ER Diagrams, Data Migration, Backup and Recovery, Artificial Intelligence, Machine Learning, Deep Learning, Neural Networks, AI Algorithms, Natural Language Processing (NLP), Reinforcement Learning, Machine Learning Models, Predictive Analytics, Data Science, Computer Vision, TensorFlow, PyTorch, Machine Learning Frameworks, AI Solutions, AI Integration, ML/AI Development, Deep Learning Architectures, Model Training, Data Analysis for AI, AI Development, Machine Learning Engineer, Deep Learning Specialist, Supervised Learning, Unsupervised Learning, AI Deployment, Model Optimization, Feature Engineering, Machine Learning Pipelines, AI Research, AI in Automation, Scikit, Artificial Intelligence, Machine Learning, Deep Learning, Neural Networks, AI Algorithms, Natural Language Processing (NLP), Reinforcement Learning, Machine Learning Models, Predictive Analytics, Data Science, Computer Vision, TensorFlow, PyTorch, Machine Learning Frameworks, AI Solutions, AI Integration, ML/AI Development, Deep Learning Architectures, Model Training, Data Analysis for AI, AI Development, Machine Learning Engineer, Deep Learning Specialist, Supervised Learning, Unsupervised Learning, AI Deployment, Model Optimization Machine Learning Pipelines.

API Development
ChatGPT
OpenAI API
LangChain
Web Scraping
RabbitMQ
MongoDB
MySQL
Django
Telegram API
Automation
JavaScript
Redis
Docker
Python
$35 hourly
Eduard H.
- 5.0/5
- (14 jobs)
💻 I've built 25+ successful projects, including Telegram Mini Apps, Telegram bots, a wide range of web scrapers (collecting over 90 million data units monthly from various websites), AI chatbots, Web UIs, APIs, payment integrations, browser automation bots, and much more. With this extensive experience, I'm confident I can execute your task better than anyone else. ⚡️ Hit the invite button, and let's discuss the project ✔️ Services: - Web Scraping - Browser Automation - Creating Telegram Mini Apps - Creating Bots (Telegram, Whatsapp, Discord) - Working with API - Creating Web UI (Flask / FastAPI / Django) - Creating Telegram Games - Creating API (FastAPI / Flask / DRF) - Creating Webhooks (FastAPI / Flask / DRF) - Python Scripts - Scraping Data from Endpoints of API / Backend Calls - Creating Desktop Apps (PyQT5 / Tkinter) - Integrating AI to Projects - Saving Data to Excel / CSV / JSON / Google Sheets - Auto Downloading Files - Using Apify API - Auto Processing of Emails - Pygame Games - Creating Telegram Mini Apps - Creating Telegram Games - Scraping Data from YouTube - Creating Notifiers to Telegram - Deployment to Server - Using OpenAI API - Uploading with WooCommerce API - Scraping Zillow / Hipcamp / Campspot - Scraping with Selenium - Web Analyzer - Backend - Creating Auto Uploaders - Integration Binance API - Integration ByBit API - Integrating CoinMarketCap API - Web Scraping from Social Medias - Creating Web Application or Website with React & FastAPI - Integrating payments - Automation for YouTube - Creating projects with YouTube API - Processing video with Python ✔️ Stages of Work 1. You describe your preferences for the project execution and provide tech task to work with. If you don't have it, I will create it by explanation and preferences. 2. After finalizing the details, I do estimate and create plan of development for you. Throughout the process, I share to you ideas how to create project in the best way. 3. Once the estimate is approved, I start to develop the project. 4. I send you the finished project or milestone for review and await any adjustments you may have. 5. I'm always available to communicate with you and maintain project after development. 🚀 As a Python developer, I bring over 4 years of extensive programming experience to the table. Notably, I've clinched victories in programming competitions, showcasing my prowess in the field. Quality and speed are the hallmarks of my work. I prioritize excellence in every task. Customer feedback: ⭐️⭐️⭐️⭐️⭐️ "I have successfully completed several projects with Eduard and will continue to enjoy working with him. He is reliable and responds quickly and reliably to enquiries." - Daniel K. ⭐️⭐️⭐️⭐️⭐️ "Eduard is very skilled, efficient, and creative in resolving problems that come up. Look forward to working with Eduard again." - Kurt B. ⭐️⭐️⭐️⭐️⭐️ "Thanks Edward, very good work, helped to find a way to make the project work by looking at it from another position… end result as required!" - Martin W. 🤍 Feel free to message me if you have any questions. I am looking forward to working with you together! Website Scraping, Browser Selenium Automation, Telegram Bots, Whatsapp Bots, Discord Bots, Facebook, Instagram, Reddit, Twitter / X, API, Web UI, Flask, FastAPI, Django, DRF, Webhooks, Python Scripts, Fix Bugs, Scraping Endpoints of API, Backend Calls, Desktop Apps, PyQT5, Tkinter, Integrating AI, Excel, CSV, JSON, Google Sheets API, Apify API, Automation of Emails, Pygame, Telegram Mini Apps, Scraping from YouTube, Scraping from TikTok, YouTube API, Docker, OpenAI API, WooCommerce API, Zillow, Hipcamp, Campspot, Selenium Driver, Web Analyzer, Backend, Automation, Google Cloud, Telegram Mini App, AI chatbot, integrating payment, React and FastAPI

API Development
Back-End Development
Python Script
Web UI
API
Flask
WhatsApp
YouTube
FastAPI
OpenAI API
Selenium
Telegram API
Browser Automation
Web Scraping
Python
$32 hourly
Oleh P.
- 5.0/5
- (2 jobs)
Senior JavaScript (Node/React) Developer specializing in API integrations and creating smooth, responsive UI/UX solutions - delivering end-to-end results on time and within budget. ❓ 𝗡𝗼𝘁 𝗦𝘂𝗿𝗲 𝗪𝗵𝗲𝗿𝗲 𝘁𝗼 𝗦𝘁𝗮𝗿𝘁? I help you define a clear project scope with structured documentation, ensuring alignment with your business goals. ❓𝗦𝘁𝗿𝘂𝗴𝗴𝗹𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆? I design efficient architectures built for growth, ensuring your platform handles traffic and data as your business expands. ❓𝗟𝗶𝗺𝗶𝘁𝗲𝗱 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲? From API integrations to complex workflows, I bring the technical know-how to turn your ideas into robust solutions following the best practices. ❓𝗪𝗼𝗿𝗿𝗶𝗲𝗱 𝗔𝗯𝗼𝘂𝘁 𝗕𝘂𝗱𝗴𝗲𝘁 𝗼𝗿 𝗧𝗶𝗺𝗲𝗹𝗶𝗻𝗲𝘀? I provide transparent project planning, realistic estimates, and consistent progress updates to keep you on track. ❓𝗡𝗲𝗲𝗱 𝗮 𝗕𝗲𝘁𝘁𝗲𝗿 𝗨𝘀𝗲𝗿 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲? I create intuitive, responsive interfaces that enhance user satisfaction and engagement. 🛠 Core tech stack: ⭐ Frontend Development: React.js, Redux, TypeScript, Next.js, Material-UI, Bootstrap, Tailwind CSS, HTML5, CSS3, Sass/SCSS ⭐ Backend Development: Node.js, Express.js, GraphQL, REST APIs ⭐ Databases: MongoDB, PostgreSQL, MySQL, DynamoDB ⭐ DevOps: AWS (EC2, S3, Beanstalk), Docker, Firebase, CI/CD pipelines ⭐ Other Tools: Git, JIRA, Confluence, WebSockets 🏆 What I deliver: ✅ a well-defined transparent project plan to kickstart development ✅ a secure, scalable platform ready for growth. ✅ smooth integration of APIs, payment gateways, and third-party systems. ✅ engaging, user-friendly designs that enhance satisfaction. 📩 𝙇𝙚𝙩’𝙨 𝙙𝙞𝙨𝙘𝙪𝙨𝙨 𝙮𝙤𝙪𝙧 𝙥𝙧𝙤𝙟𝙚𝙘𝙩 𝙜𝙤𝙖𝙡𝙨 𝙩𝙤𝙙𝙖𝙮 - 𝙣𝙤 𝙢𝙖𝙩𝙩𝙚𝙧 𝙬𝙝𝙚𝙧𝙚 𝙮𝙤𝙪’𝙧𝙚 𝙨𝙩𝙖𝙧𝙩𝙞𝙣𝙜 𝙛𝙧𝙤𝙢!

API Development
Payment Gateway Integration
MERN Stack
Sharetribe
Front-End Development
App Development
Custom Ecommerce Platform Development
Full-Stack Development
Ecommerce Website
Ecommerce
Web Application
Web Development
JavaScript
React
Node.js
$50 hourly
Vadym K.
- 4.5/5
- (5 jobs)
🚀 AI & Data Engineer | Full-Stack Developer | Automation Expert A highly skilled AI/Data Engineer and Full-Stack Developer with expertise in Python, React, Next.js, Django, and AWS. Specializing in automation, web scraping, and scalable data solutions, leveraging advanced RAG tools, LLMs, and automation-driven data engineering to enhance efficiency, optimize workflows, and drive innovation. 🧠 AI & Machine Learning 🔹 LLM Frameworks: LangChain, Hugging Face, OpenAI GPT, RAG 🔹 NLP: SpaCy, NLTK, Hugging Face Transformers, Gensim 🔹 Machine Learning: Classification, Regression, Recommender Systems, Time Series Analysis (Prophet, ARIMA) 🔹 Deep Learning: TensorFlow, Keras, PyTorch, JAX, ONNX Runtime 🔹 AutoML & AI Platforms: H2O.ai, DataRobot, Google Cloud AutoML 🔹 Computer Vision: OpenCV, YOLO, Detectron2 🌐 Full-Stack Development 🔹 Frontend: React.js, Next.js, TypeScript, Tailwind CSS 🔹 Backend: Django, FastAPI, Node.js, Express, Flask 🔹 Databases: PostgreSQL, MySQL, MongoDB, Cassandra, Neo4j 🔹 Data Streaming & Orchestration: Apache Kafka, Pulsar, Amazon Kinesis 🔧 Automation & Web Scraping 🔹 Scraping Libraries: Selenium, Puppeteer, BeautifulSoup, Scrapy, Playwright, Requests-HTML 🔹 Advanced Techniques: CAPTCHA bypass, IP rotation, Cloudflare bypassing, Headless browsing 🔹 Premium Proxies: ZenRows, Scrapfly, Zyte API, BrightData, PhantomBuster, Oxylabs, Luminati 🔹 API Integration & Workflow Automation: Zapier, Make (Integromat), Tray.io, MuleSoft 🔹 AI-Powered Automation: UiPath, Blue Prism, Automation Anywhere, Microsoft Power Automate ☁️ DevOps & Cloud Infrastructure 🔹 Platforms: AWS, Azure, Google Cloud Platform, IBM Cloud 🔹 Containers & CI/CD: Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI/CD, CircleCI, Terraform 🔹 Serverless Computing: AWS Lambda, Azure Functions, Google Cloud Functions 🔹 Security Automation: Splunk Phantom, Demisto, IBM Resilient, Swimlane 📊 Data Science & Engineering 🔹 Data Processing: Pandas, NumPy, SciPy, Dask, Vaex 🔹 Big Data Ecosystems: Apache Spark, Hadoop, Flink, Beam, Databricks Delta Lake 🔹 ETL & Data Pipeline Orchestration: Apache Airflow, Luigi, dbt (Data Build Tool), Prefect, Apache NiFi 🔹 Data Warehousing: Snowflake, Redshift, BigQuery 🔹 Data Visualization: Tableau, Power BI, Matplotlib, Seaborn, Plotly, D3.js 🔹 Data Governance & Quality: Collibra, Apache Atlas, Great Expectations, Soda SQL 🛠️ RAG (Retrieval-Augmented Generation) & Knowledge Management 🔹 Vector Databases: Pinecone, Weaviate, Qdrant, Milvus, pgvector 🔹 Graph Databases: Neo4j, TigerGraph 🔹 Embeddings: OpenAI, Cohere, SentenceTransformers 🔹 Knowledge Graphs: GraphRAG, rdflib 🚀 Let’s Build Something Extraordinary! Whether you need an intelligent AI solution, an enterprise-grade web application, an automated workflow, or a data-driven system, I bring a combination of expertise, innovation, and efficiency to turn your vision into reality. 📩 Let’s connect and create something groundbreaking!

API Development
AI App Development
JavaScript
Automation Framework
Natural Language Processing
CI/CD
Django
Beautiful Soup
Vector Database
Web Scraping
AI Chatbot
Python
Large Language Model
Machine Learning
Artificial Intelligence
$40 hourly
Taras I.
- 5.0/5
- (3 jobs)
What if your next web application could be both powerful and effortless for users to navigate? As a Full Stack Developer, I specialize in crafting efficient, scalable, and intuitive web applications that deliver measurable value to your business. I specialize in Django, FastAPI, and Flask, building reliable backend systems that work efficiently and integrate seamlessly with modern frontends. Whether it’s creating a new application or improving an existing one, I’m ready to turn your ideas into a functional, high-performing solution. My Skill Set: ✅ Programming Languages: Python, JavaScript/TypeScript, HTML, CSS ✅ Frameworks & Libraries: Django, FastAPI, Flask, Node.js, Express.js, Nest.js, React.js, Next.js, Vue.js, Tailwind CSS ✅ Databases: PostgreSQL, MySQL, SQLite, MongoDB ✅ DevOps & Tools: Docker, Kubernetes, CI/CD (GitHub Actions, GitLab CI), Nginx, Apache ✅ Cloud Platforms: AWS (EC2, S3, Lambda), Google Cloud Platform, Heroku ✅ APIs: RESTful APIs, GraphQL, WebSocket APIs ✅ Testing Tools: Pytest, UnitTest, Selenium ✅ Version Control: Git, GitHub, GitLab, Bitbucket ✅ Other Skills: Web scraping, automation scripts, performance optimization, debugging complex systems Let’s turn your ideas into reality! 💡 Feel free to reach out so we can discuss your project and how I can help bring it to life. Let’s get started! 😊 Message me today and let’s build something amazing together.

API Development
Automation
AI Agent Development
Web Scraping
GraphQL
RESTful API
PostgreSQL
Node.js
MongoDB
Tailwind CSS
Next.js
React
FastAPI
Django
Python
$45 hourly
Oleksandr S.
- 5.0/5
- (5 jobs)
Are you looking to automate workflows, integrate AI models, or extract valuable data with precision and efficiency? You've come to the right place! I specialize in AI-powered automation, web development, and web scraping, helping businesses streamline operations, reduce manual work, and enhance productivity. With the rapid growth of AI-driven tools, I help companies leverage automation to optimize workflows, process data intelligently, and create seamless digital experiences. With hands-on experience in cutting-edge automation platforms like Make.com, Zapier, and n8n, I design and implement custom AI-driven automation workflows that eliminate repetitive tasks, enhance decision-making, and maximize efficiency. Whether it’s integrating APIs, setting up automated data pipelines, or building no-code/low-code AI workflows, I deliver solutions that make businesses smarter and more agile. Beyond automation, I am proficient in web development and web scraping, crafting custom software solutions tailored to specific business needs. From developing AI-powered chatbots to scraping large datasets for actionable insights, I provide scalable and robust solutions that drive business growth. 🔥 My Expertise Includes: ✅ AI Automation & Workflow Integration (Make.com, Zapier, n8n) ✅ Web Scraping & Data Extraction (Scrapy, Selenium, BeautifulSoup, Puppeteer) ✅ Large Language Models (LLMs) & NLP Applications (OpenAI, GPT, LangChain) ✅ Web Development (Python, JavaScript, Node.js, Flask, Django, React) ✅ API Development & Integration I have successfully worked on projects ranging from automating business processes to developing intelligent AI chatbots and scraping large datasets for market research. My focus is on delivering efficient, scalable, and robust solutions to help your business grow. 💡 Why Choose Me? ✔️ Problem-Solver – I analyze your challenges and offer the best automation solutions ✔️ Detail-Oriented – Clean, optimized, and well-documented code ✔️ Fast & Reliable – Meeting deadlines while maintaining top-notch quality Ready to automate your workflows, develop an AI-driven system, or extract valuable data? Let’s discuss your project and make it happen! 📩 Click the "Invite" button, and let’s get started! 🚀

API Development
Web Development
API Integration
React
Django
Flask
Node.js
JavaScript
Python
NLP Tokenization
LLM Prompt
Data Extraction
Web Scraping
Automated Workflow
AI Development
$41 hourly
Alexey C.
- 5.0/5
- (9 jobs)
With over 15 years of hands-on experience in full-stack development, I specialize in building, scaling, and optimizing web applications using modern frameworks such as Ruby on Rails, React.js, and Node.js. Being a part of the Roobykon Software team, I offer full-cycle software engineering services, from initial product concept to launch, modernization, and continuous improvement. I’m passionate about delivering robust, scalable solutions tailored to meet your business goals. 🏆 Area of expertise: ➤ E-commerce (including multi-vendor marketplaces and product/service platforms) ➤ FinTech (payment gateways, escrow systems, and custom financial solutions) ➤ CRM Systems (tailored customer relationship management platforms) ➤ Logistics (marketplaces for delivery, warehousing, and transportation) ➤ Marketplace Development (B2B, B2C, peer-to-peer, product, service, and rental-based platforms using Sharetribe and custom-built solutions) ➤ Travel and Tourism (booking platforms for accommodations, experiences, and tours) ➤ Car Rent and Rental Websites (multi-vendor vehicle rental platforms) ➤ Retail (multi-vendor e-commerce platforms, digital storefronts) ➤ Construction and Real Estate (property listing marketplaces, contractor bidding platforms) ➤ Aviation (charter services, private jet booking platforms) and boat rental (yacht, boats, jet ski) ➤ Entertainment and Social Networking (event booking, ticketing, and social interaction platforms) ➤ Marketing and Advertising (customized marketplaces for ad placements, influencer marketing platforms) ➤ Insurance (platforms for comparing and purchasing insurance policies) ➤ Industrial (B2B marketplaces for industrial goods and services) ➤ Marketplaces for hospitality services, catering, and restaurant supplies ➤ Mental Health and Healthcare (platforms for telemedicine, therapy services, healthcare provider listings) ➤ Management (resource management platforms for HR, procurement, and project collaboration) 👉 Technology stack: ✔️ Ruby , Ruby on Rails ( Ruby on Rails Framework and Development ) ✔️ Node ( Node.js , NodeJS , Express.js ) ✔️ API (REST API development), GraphQL ✔️ React ( ReactJS , React.js ) ✔️ React Native (ReactNative) ✔️ Liquid ✔️ Firebase | MySQL | MSSQL | PostgreSQL Programming | MongoDB | DynamoDB ✔️ AWS | Digital Ocean ⭐ Shopify Services: ➤ Custom Shopify Store Development: from idea to launch, I build Shopify stores that are tailored to your specific needs; ➤ Shopify Store Redesign: I'm ready to give your existing store a fresh, modern look that enhances user experience and boosts conversions; ➤ Theme Customization & Development: whether you need a new unique theme or want to enhance an existing one, I've got you covered; ➤ Website Audit & Bug Troubleshooting: I perform a detailed audit and identify issues efficiently to ensure your store runs smoothly; ➤ Checkout Process Customization in Shopify Plus: I'm ready to tailor the checkout process to fit your unique business needs; ➤ Page Speed Optimization: ensuring fast load times for a better user experience and improved SEO. ❗If you’re seeking a reliable development partner who is not afraid of tackling complex challenges, let’s chat!

API Development
App Marketplace
NodeJS Framework
Stripe
Sharetribe
Full-Stack Development
RESTful API
Web Development
MySQL
Node.js
SQL
Ruby
AJAX
Ruby on Rails
JavaScript
$46 hourly
Kseniia G.
- 4.8/5
- (19 jobs)
𝑾𝒂𝒏𝒕 𝒕𝒐 𝒄𝒓𝒆𝒂𝒕𝒆 𝒎𝒂𝒈𝒊𝒄 𝒘𝒊𝒕𝒉 𝑨𝑰? 𝒀𝒐𝒖’𝒗𝒆 𝒄𝒐𝒎𝒆 𝒕𝒐 𝒕𝒉𝒆 𝒓𝒊𝒈𝒉𝒕 𝒑𝒍𝒂𝒄𝒆! I specialize in Python & .Net Core AI development & crafting AI-powered web and mobile applications with generative AI and API integration. Outside of work, I'm an animal lover, volunteer, and rights activist. Special discounts and exclusive offers for social good and impactful projects! As an AI developer specializing in AI application development, I deliver top-notch AI chatbots, AI integration with OpenAI and AI automation. Expertise in Python, Open AI API, and GPT-3. Skilled in API development, web development, and UI UX web design. Passionate about artificial intelligence and AI machine learning. 𝐓𝐡𝐞𝐬𝐞 𝐚𝐫𝐞 𝐭𝐡𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐭𝐡𝐚𝐭 𝐦𝐲 𝐭𝐞𝐚𝐦 𝐚𝐧𝐝 𝐈 𝐚𝐫𝐞 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟: 💡 Sembli AI. AI assistant to record, transcribe, and generate smart meeting summaries. Created with Python, Kink, Transitions, React 💡 Simba. AI Marketing Analysis Platform for elevating the measurement and strategy of clients' marketing endeavors. Chat GPT was integrated to build an AI assistant is all about making analytics easy for newbies in digital marketing. The core stack is Python, Flask, React, S3 Storage, Pandas, Tailwind CSS, and ChatGPT API. 💡 AI marketing tool for managing Google Ad Grants. The platform used Open AI API integration to structure the collected keywords after the crawling process. The main technology stack is Python, OpenAI, React, Crowler, Core-Based App, and Tailwind CSS. 💡 AI FinTech tool for analyzing the keywords used to confirm a significant event that caused the stock to move. Used the following Python stack, Selenium, Splash, and Scrapy Python library. 𝐌𝐲 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 📌 Python development: Django, FastAPI, Flask, Golang, Starlette, async/await, concurrent apps, Frameworks writing, 3rd party integration, functional programming, OO programming, package development, PyPI, tus 📌 TypeScript & JavaScript: Angular, SvelteJS, React & React.js, React Native, Next.js, Tailwind CSS, Pandas, VanillaJS, jQuery, Webpack, Vite, Raspberry Pi 📌 C#: .Net Core & ASP.Net Core 📌 AI/ML: OpenAI API, ChatGPT, AI integration, AI automation, machine learning, embeddings, NumPy 📌 Cloud & DevOps: AWS, Google Cloud (GCP), Firebase, Docker, Kubernetes, Heroku, Git, 📌 Databases: PostgreSQL, MySQL, MongoDB, Redis, Neo4j, SQLite, SQL Queries, Scaling 📌 APIs: GraphQL, RESTful APIs, JSON, Swagger, Socket, WebRTC, RPC, OAuth, Auth0 📌 Testing: Selenium, CI/CD, Cypress, Puppeteer, Pytest 📌 Payments: Stripe, PayPal, 𝐃𝐨𝐦𝐚𝐢𝐧𝐬 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡: 📍 SaaS, B2B & B2C 📍 Edtech, E-learning, School, Education, LMS 📍 Non-profit, Social Good, Charity 📍 EPR & CRM 📍 Healthcare, Telehealth 📍 Wellness & Beauty 📍 Social media, Music, Media and Entertainment 📍 Marketing & SEO 📍 Sport (football, soccer, golf, basketball) 📍 Fintech 𝐖𝐡𝐨 𝐈'𝐦 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡: 🏆 Individual entrepreneur 🏆 Startup 🏆 SMBs & SMEs 🏆 Enterprise 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬. 𝐈'𝐯𝐞 𝐰𝐫𝐚𝐩𝐩𝐞𝐝 𝐮𝐩 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲: 🎯 MVP, MMFS, MMP, PWA 🎯 Web application 🎯 Mobile application 🎯 API Development & Integration 🎯 Workflow AI automation 🎯 Data visualization dashboard 🎯 AI-powered solution 🎯 Browser extension 🎯 AI assistants 🎯 Shopping & Listing & E-commerce marketplace 🎯 Messaging apps 🎯 Betting & fantasy sports website 🎯 Trading web platform Feel free to contact me when more details are required. I look forward to working with you! # Ai animation App developer Application development Ai automation AI Software Developer API AI SaaS App Senior Fullstack Developer Build a website Develop a professional website AI website ux ui app designer Frontend Front end developer React engineer front-end designer Shopify WordPress front end Ai web developer ui ux web design Rest API development openai developer App Development ChatGPT React-JS ReactJS power bi python raspberry pi Web development ai Gen AI Generative ai Gpt developer Gpt-3 Gpt3 fine tuning nlp AI/ML machine learning open ai chatbot api developer business development AI app Website Developer Ai developer Web Design Ai programming Ai programmer Ai prompt Ai python Ai saas image generator Ai chat bot chatbotgpt Ai dev Ai developers Ai deep learning Ai web app Ai startup Api integration artifical inteligence artificial inteligence neural network Api automation Build an app Ai application development Ai data mvp bubble mvp startup mvp saas mvp mvp developer non profit developer nonprofit developer non-profit developer adtech developer elearning designer e-learning designer charity website social media app social media app developer marketplace developer marketplace website web app developer web application web app design progressive web app ui ux web app web app development web app developers full stack web app developer .net developer .net core maui asp.net core mvc developer asp.net zero

API Development
ChatGPT API Integration
ChatGPT
AI App Development
Software Development
Web Development
API
FastAPI
Chatbot Integration
App Development
AI Development
Mobile App Development
OpenAI API
Python
API Integration
$125 hourly
Georgii D.
- 5.0/5
- (53 jobs)
HOT TOPIC: CLS (Cumulative Layout Shift) - (0 unresolved cases), LCP (Largest Contentful Paint), INP and FID improvements (Google Web Vitals). Detail-oriented specialist. Florida International University's Alumni. Data-driven decisions. Google Analytics, Google Tag Manager, and Google Ads Certified Expert. Success is built on trust. Trust starts with transparency. My mission is to help you to achieve value through performance optimization of web products, whether that means pushing you to the front of your industry, earning you greater profits as a market leader, or assisting you to realize long-standing projects and plans. Experience in travel&transportation-related projects for 10 years. My services: - Custom software development. PHP, JS, iOS, and Android developers.  - IT consulting. I love startups. I assist them in tech consulting and starting projects from scratch. - Website performance optimization. 10 years experience, 30+ successful businesses. - Broken links are highly productive fixers.

API Development
Bug Fix
Website Optimization
CSS
PHP
Ecommerce
Page Speed Optimization
Apache HTTP Server
Search Engine Optimization
Tech & IT
Technical SEO
Google Analytics
$40 hourly
Oleksandr L.
- 4.9/5
- (152 jobs)
Hi, I'm Alex I'm a senior WordPress developer and founder of "I WP DEV" Agency In my portfolio, I have more than 150+ completed commercial projects. 🟦3000+ hours and 116 completed projects with 5-star reviews on Upwork. 🟦WordPress website creation since 2010. 🟦Plugins and extensions created since 2015. 🟦E-commerce projects creation based on WordPress WooCommerce plugin. 🟦Custom REST API creation. 🟦API: Twitch, Quickbooks, PayPal, Stripe, ElasticSearch, RAPID API, MetroPublisher, Google Map

API Development
Figma
WordPress e-Commerce
Google Optimize
RESTful API
Google APIs
jQuery
WordPress Theme
Elementor
PHP
WordPress Plugin
HTML5
WordPress
CSS
$40 hourly
Bohdan S.
- 4.9/5
- (55 jobs)
For over 8 years I've been transforming my clients' ideas into cost-efficient and scalable web platforms. Over 10,000 hours were spent coding and architecting web apps. Built platforms are still operational and successfully generating monthly revenue of over $200,000. My achievements: 🏆 Built a SaaS web platform that made $10,000 on subscriptions in the first months 🏆 Built an Ad Exchange platform with monthly revenue of over $200,000 🏆 Built High Load web app with 20M+ requests daily I formed a solid team based on the experience I gained throughout my career. Our primary goal is to assist startups in developing their web platforms. We realise how important it is for companies to have a defined timeframe and an optimised cost, and we have built our team around those beliefs. 🎯 Our main specialisation is: - edTech / eLearning / LMS(Learning Management System) - ATS(Applicant Tracking System) - Recruiting platforms - Complex SaaS platforms - Custom CRM/ERP solutions Skills: - Javascript / Typescript - Node.js - Express.js / Fastify / Nest.js - React / Next.js - MongoDB / PostgreSQL - Redis - Google Cloud Platform / AWS / Firebase - Docker - OpenAI API(ChatGPT) What my clients say about me: ⭐️⭐️⭐️⭐️⭐️ "Bohdan and his agency were great to work with. Bohdan was very communicative and quickly picked up on what was needed for a relatively complicated website. I would highly recommend Bohdan and his team for anyone trying to launch an MVP from scratch!" - Emory, 🇺🇸 ⭐️⭐️⭐️⭐️⭐️ "Bohdan helped me in building my recruitment SaaS web platform from the ground up. He has strong communication skills as well as creative problem-solving abilities. I would gladly collaborate with him on future projects!" - Rohan, 🇺🇸 🟢 Press the "𝗜𝗻𝘃𝗶𝘁𝗲" button and let's discuss your project!

API Development
Full-Stack Development
NestJS
AI App Development
CSS
HTML
Web Development
MongoDB
Web Application
JavaScript
MySQL
SaaS
ExpressJS
React
Node.js
$60 hourly
Valerii K.
- 5.0/5
- (3 jobs)
Strong knowledge of HTML, CSS. Work with Git. Experience with JavaScript (as well as various jQuery libraries) and Vanilla JS. Work with MySQL databases. Excellent understanding of the structure and operation of WordPress, WordPress Core and API. Creation of themes, plugins, widgets and development of functionality of varying complexity. Work with SOAP (wsdl). Implementation of technology APIs: LinkedIn, Facebook, Xero.

API Development
HTML
WordPress
Git
CSS 3
PHP
JavaScript
CSS
SCSS
jQuery
$45 hourly
Bogdan M.
- 4.9/5
- (103 jobs)
Hello everyone! I’m a seasoned developer with over 14 years of experience in technology and software development. In today’s fast-evolving world, I believe that coding alone isn't enough; it’s about uncovering deeper, more impactful solutions that drive success. My primary objective is to deliver top-tier, reliable solutions, meticulously tailored to meet the unique needs of each client. When tackling a project, I don’t just code—I immerse myself in the perspective of a user or business owner, ensuring the outcome perfectly aligns with your goals. I am adept at navigating a wide range of technical challenges and am always ready to address any questions or concerns you may have. Let’s work together to discover and implement the perfect solution for your project. I look forward to collaborating with you—feel free to reach out!

API Development
WordPress e-Commerce
PSD to WordPress
Elementor
Google Maps API
Mailchimp
API
WordPress Plugin
jQuery
PHP
JavaScript
WordPress
AJAX
HTML5
Web Development
$36 hourly
Juliya P.
- 5.0/5
- (13 jobs)
🥇Top Rated Plus developer with 14+ years experience and 120+ successful projects. I specialize in crafting custom SaaS platforms, MVPs, marketplace solutions, and eCommerce systems tailored to drive growth and solve complex business challenges. 🚀 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼 • Custom Web Development. Delivering scalable, high-performance applications using Node.js, React.js, Express.js, and MongoDB for businesses seeking secure, reliable, and future-proof solutions. • SaaS platforms. Designing and implementing multi-tenant software tailored to your operational needs, streamlining processes, and enhancing user engagement. • e-Commerce experience. Building dynamic, multi-vendor platforms with advanced functionality, including multi-language, multi-currency, and customized workflows. • Problem-Solving. Developing integrations for APIs, payment gateways, and data workflows to enhance efficiency, enhance user flows, and reduce operational bottlenecks. 🏆 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 I work with you to clarify your business needs and provide a transparent project roadmap, ensuring the solution aligns with your goals. Beyond development, I offer consulting and strategic insights to guide your success. My process focuses on bringing your product to market quickly while delivering end-to-end expertise to create reliable, maintainable platforms that evolve with your business. 🎯 𝗞𝗲𝘆 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 • Frontend: React.js, Redux, Material-UI, TypeScript, Tailwind CSS, Bootstrap • Backend: Node.js, Express.js, GraphQL • Databases: MongoDB, PostgreSQL, MySQL • DevOps: AWS, Docker, Firebase, Supabase 💡 𝗞𝗲𝘆 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗦𝗲𝗿𝘃𝗲𝗱 • Healthcare & Telemedicine. HIPAA-compliant solutions for appointment scheduling, teleconsultations, and patient data management. • Rental & Automotive. Platforms for real-time inventory, vehicle rentals, and customer management. • Education & LMS. Online learning platforms with personalized educational tools and multi-tier course management. • E-Commerce & Marketplaces. Solutions for boutique sellers and multi-vendor platforms with optimized user flows. • Financial Tools. Custom financial management systems for secure transactions and advanced planning. Whether you're starting a new project or looking to enhance an existing platform, I’m here to help bring your vision to life with innovative and efficient solutions. 📩 Let’s create something great together! last updated: Jan 21

API Development
MERN Stack
Software Architecture
App Marketplace
Sharetribe
Website
Web Development
Payment Gateway Integration
Node.js
React
jQuery
CoffeeScript
CSS 3
JavaScript
HTML5
$40 hourly
Anastasiia S.
- 5.0/5
- (12 jobs)
Hello There! I am senior software engineer with 7 years of experience in iOS/Android app development. I can provide solution for cross-platform app development with Xamarin and React Native. My skills: ✔ React Native (JavaScript/ES6/7, Redux, Redux-Saga, Redux-Thunk) ✔ Xamarin (C#, Xamarin.Forms, Xamarin.iOS, Xamarin.Android, Xaml, MvvmCross, FreshMvvm, Prism) ✔ Ionic ✔ iOS (Swift, Objective-C) ✔ Android (Java) I provide: ✔ Excellent software architecture skills, with the ability to develop well-structure code. ✔ Experience integrating with third party libraries and APIs. ✔ Good comprehension of UI/UX, including Android Material and iOS Design guidelines. ✔ Solid understanding of the mobile development life cycle. ✔ Proven track record of publishing apps to App Stores. ✔ Action-oriented, with strong initiative and the ability to solve problems creatively When dealing with customers I try to clarify necessary details concerning the project, estimated time for implementation.

API Development
Next.js
Cross Browser & Device Compatibility
Front-End Development
Android App Development
Mobile App Development
iOS Development
Node.js
JavaScript
Ionic Framework
Firebase
React Native
Xamarin
C#
Hybrid App Development
$40 hourly
Denys K.
- 4.9/5
- (42 jobs)
Hi there 👋 With over 10 years of experience, I specialize in creating beautiful and functional websites that drive business growth. My focus is on web design, UI/UX, and web development for businesses looking to stand out online. As a Senior Web Designer and Developer, I have worked with clients across various industries, delivering custom web solutions that are both visually appealing and highly functional. My skills include: ✅ UI/UX Design – Crafting intuitive and user-friendly web & mobile interfaces using Figma, ensuring a seamless experience for end users. ✅ Web Development – Building high-quality, scalable websites using WordPress and Webflow, optimized for performance and user engagement. ✅ Custom Development – Integrating unique features tailored to your business needs, including e-commerce solutions, custom forms, API integrations, and more. I specialize in transforming your ideas into a high-performing online presence. Whether you're looking to: 💡 Create a sleek landing page that converts visitors, 🔄 Redesign an existing website to enhance user experience, 🛠️ Develop a custom web solution with unique features, I will ensure a seamless experience from concept to launch. Frontend: React, Vue.js, JavaScript, HTML5, CSS3, Bootstrap, Tailwind CSS Backend: PHP (Laravel, Symfony), Node.js CMS: WordPress (custom themes & plugins), Webflow E-commerce: WooCommerce, Shopify, PrestaShop API інтеграція: REST, GraphQL UI/UX: Figma, Sketch, Adobe XD, Wireframing & Prototyping, Logo+Branding, Mobile/App Design 💬 Clear communication is key! I ensure transparent and responsive communication throughout the project. ⏳ Deadlines are my priority—your success is my mission, and I will work tirelessly to meet all timelines. 🌍 Let's collaborate to bring your vision to life with a seamless, user-centered design and cutting-edge development. Interested in working together? Check out my portfolio below to see my previous projects and let’s discuss how I can help you achieve your web goals. Don’t hesitate to contact me—I’m happy to answer any questions and get started on your project.

API Development
Elementor
Shopify
React
PrestaShop
Landing Page
JavaScript
Ecommerce Website
PHP
Figma
Web Development
Web Design
UI/UX Prototyping
Webflow
WordPress
$40 hourly
Oleksandr T.
- 4.5/5
- (36 jobs)
Hi, I'm a senior chatbot developer with total programming experience - 18 years (from 2006). I can help building Crypto, AI and general purpose chatbots. Was part of multiple chatbot start-ups and can help with your idea to bring to life. MY SKILL SET: 👉 Programming Languages: Python, PHP, JavaScript 👉 Messengers: web apps, Telegram, WhatsApp, Slack, Facebook Messenger 👉 Chatbots: DialogFlow, ManyChat, GPT3, Landbot 👉 Crypto: Solidity, Coinbase API, Moralis API, Etherscan API, BTCPay Server 👉 AI: ChatGPT, GPT-3.5, GPT-4 👉 Payments: Stripe API, Paypal API, Crypto Payment Gateways 👉 Web: Flask, Laravel, Node.js, JavaScript, HTML, CSS 👉 Databases: MYSQL, PostgreSQL, SQLite, MongoDB 👉 Scrapping: Beautiful Soup, Selenium 👉 API development: REST, FastAPI 👉 Other: OOP, TDD, Design Patterns, Docker, Git, Bash, Linux Administration, Cyber Security Let's discuss your idea or venture!

API Development
Websockets
Microservice
SaaS Development
Software Architecture & Design
Web Service
Telegram API
Dialogflow API
Natural Language Processing
Blockchain Development
Chatbot Development
JavaScript
PHP
Node.js
Python
$29 hourly
Dmitriy P.
- 4.9/5
- (71 jobs)
Tired of WordPress sites that look nice but don’t perform? Let’s flip the script. I build WordPress websites that aren’t just pretty — they work hard for your business. Whether you want to generate leads, boost sales, or build credibility, I’m here to help you do more with your online presence. ✅ What You Get When We Work Together: A WordPress site that sells — Clear, compelling, conversion-focused. Pixel-perfect design execution — With Elementor, ACF, or custom themes. Clean, secure, and scalable code — Built with modern PHP, JS, and best practices. Ongoing support & optimization — I don’t disappear after delivery. 🛠️ My WordPress Toolkit Includes: Technologies that are used for development: Bootstrap, Tailwind React.js, bedrock Builders: Elementor, Gutenberg, Divi, WP Beaver Builder E-commerce: WooCommerce setup, customization & optimization Custom Solutions: custom plugin development, custom theme development Speed & Security: Page speed optimization, malware removal, SEO basics Maintenance: Backups, migrations, updates, and long-term care 🔄 Services I Regularly Provide: Full Website Development (from scratch or redesign) Landing Pages that Convert WooCommerce Stores That Sell Plugin/Theme Customization & Development Speed & Security Optimization Bug Fixes, Debugging & Technical Support Website Migration, Hosting Setup, Backups Ongoing Maintenance Plans 📈 Who I Work Best With: Entrepreneurs & Small Businesses needing a site that drives results Agencies looking to outsource expert WordPress development E-commerce brands ready to scale online Coaches & consultants building authority and capturing leads 🎯 Let’s stop building “just another site” and start creating something strategic and purposeful. 💬 Want to discuss your idea? 🟢 Click “Invite to Job” to start the conversation. Keywords: WordPress, WooCommerce, Elementor, ACF, WPML, Yoast SEO, WP Rocket, RankMath, Contact Form 7, Gravity Forms, Ninja Forms, CPT UI, Advanced Custom Fields, Slider Revolution, WPBakery, Divi, Gutenberg, Loco Translate, Polylang, SEOPress, Autoptimize, Smush, ShortPixel, MemberPress, LearnDash, LifterLMS, Duplicator, All-in-One WP Migration, UpdraftPlus, iThemes Security, Wordfence, Sucuri, W3 Total Cache, Perfmatters, Google Analytics, Facebook Pixel, GTM, Hotjar, Mailchimp for WP, Sendinblue, Klaviyo, ActiveCampaign, Cloudflare, Git, GitHub, Bitbucket, HTML5, CSS3, SCSS, JavaScript, JQuery, PHP, MySQL, REST API, Figma to WordPress, Adobe XD to WP, PSD to WP, responsive design, Core Web Vitals optimization, cross-browser compatibility, cPanel, DNS, SSL setup, website migration, custom theme development, plugin development, WordPress speed optimization, WordPress SEO, WordPress security, WordPress maintenance, WordPress troubleshooting, eCommerce, mobile optimization. 24.04.2025

API Development
HTML5
web3.js
Web3
Blockchain
Web Application Development
Redux
Full-Stack Development
Web Development
PostgreSQL
TypeScript
API
React
Node.js
JavaScript
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