Hire the best API Integration Freelancers in Poland

Name: API Integration professionals
Brand: Upwork
Rating: 4.7 (144 reviews)

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Clients rate API Integration professionals

4.7/5

based on 144 client reviews

$75 hourly
Artemii D.
- 5.0/5
- (3 jobs)
🎯 For 5+ years I have been finding the most effective ways to streamline the success of an enterprise by providing healthy best-practice-aligned ServiceNow solutions. ✅ It is proven by more than 20 successful projects completed for clients from the Americas and Western Europe in such domains as banking, manufacturing, broadcasting, and traveling. My expertise developed while working for a number of Premier and Elite official ServiceNow partners. Which implies high standards, constant knowledge exchange, and professional growth. Supported with: ✔️ ServiceNow Certified System Administrator ✔️ ServiceNow Certified Implementation Specialist: Event Management ✔️ ServiceNow Certified Implementation Specialist: SPM If you need someone to 🚀 your ServiceNow success, you're at the right profile!

API Integration
.NET Framework
Web Development
Full-Stack Development
React
JavaScript
Enterprise Resource Planning
Enterprise Software
Enterprise Architecture
IT Service Management
Business Process Automation
Process Optimization
ServiceNow
$70 hourly
Kris Z.
- 5.0/5
- (63 jobs)
Hey! Pipedrive, Hubspot, FreshSales - Official Solution Provider Zapier, Make - Certified Expert I can take care of implementation, proper integration and optimization of your CRM environment. Let's give your processes more speed and make you more competitive on the market. I'm most familiar with Pipedrive CRM but also willingly work with different software. Here are examples of tasks that I can do for you: - Determining optimization/development potential (routine/repeatable tasks), - Data migration & structuring, - Automatizing of lead generation, - Creating workflow automation (internal and external), - Mailing and calendar integration, - Creating automatized mailing campaigns, - Meeting system setup, - Suggesting additional applications to solve specific problems, - Third-party software integration, - Preparing tutorials for your team and providing necessary training. Thanks to the cooperation you will: - Save time for doing routine tasks, - Organize your processes and make them more efficient, - Have your team trained to use the system properly. Open for new opportunities. Feel free to invite me to your project. All the best, Kris

API Integration
CRM Automation
Software Integration
CRM Software
Automation
Customer Relationship Management
Marketing Campaign Setup & Implementation
API
Zapier
Marketing Automation
Email Campaign Setup
Mailchimp
Marketing Automation Software
Pipedrive
$80 hourly
Dawid N.
- 5.0/5
- (48 jobs)
What my clients say about me: 🏅 "He was able to intuitively understand my vision of the task and was able to build the tool on a very short deadline." - Delivered MVP in half the time. 🏅 "Dawid did a great job building an AI education app for our company!" - Built the entire SaaS AI app from scratch 🏅 ""It was a pleasure working with Dawid. He was able to bring our AI idea to life. - Build AI fullstack MVP in one week! I want my solution to help you make money or save money. I specialize in Web AI development including: 👨🏻‍💻 AI chatbots with custom knowledge bases. 👨🏻‍💻 AI agents and autonomous agents. 👨🏻‍💻 AI automation tools and many more… What I can help you with: 🚀 Build MVPs and get you to market FAST, so you can monetize the app immediately. 🚀 Build custom automation for your business to save you 100s of hours of repetitive tasks. Here are some of my stats: ✅ 5+ years of programming in technologies like JavaScript/TypeScript, React, Angular, NextJS, HTML, SQL, NodeJS, ExpressJS, NextJS, AWS, and Firebase. ✅ Worked on over 60+ projects(30+ Upwork alone!). For various clients: solo founders, startups, and Fortune 500 companies. ✅ 100% 5-star reviews - TOP RATED PLUS(top 3% of Upwork) - 100% Job success score Working with me, you will: 🎉 See progress updates EVERY DAY! 🎉 Be able to contact me via my personal email/phone 24/7. 🎉 Get your money back, if I won’t deliver you the desired results. I can also make your web app: 💻 FAST - This has many benefits like better user retention and SEO. 💻 WCAG 2.1 complaint(accessible for people with disabilities) - You rank higher on google. 💻 Responsive(look good across all screen sizes) - More people can use your app on different devices. I use these technologies: 🔨 Frontend - NextJS/React/Angular 🔨 Backend - NextJS/ExpressJS/NodeJS 🔨 Database - MongoDB/SQLite/PostgreSQL 🔨 Cloud - AWS Amplify, EC2 /Terraform/Azure AD I have experience with the following APIs: 👨🏻‍💻 AI (GPT OpenAI API, Anthropic Claude, Google Gemini, Flux, Stable diffiusion) 👨🏻‍💻 Google - Places API, Gmail API, Maps platform. 👨🏻‍💻 Stripe - subscription-based, free-trial, multiple subscription levels. 👨🏻‍💻 Authorization with Google, Facebook, Twitter, Auth0, Github, Gmail and others 👨🏻‍💻 WordPress API - Uploading images and templates via WordPress API 👨🏻‍💻 Facebook Graph API - Facebook, Instagram and Whatsapp APIs 👨🏻‍💻 SMTP/IMAP - Receiving and sending emails through a custom interface. 👨🏻‍💻 Messaging APIs - Twillio, Nexmo. Sending SMS and Emails. I'm not limited to these though. I can learn the specifics of an API in a short time. SOUND LIKE A FIT? NEXT STEPS: Click the green ‘Invite to Job’ button in the top right-hand corner, send me a message and let’s organize a call!

API Integration
GPT-4
GPT-3
Next.js
Google Maps API
Stripe API
Node.js
Front-End Development
React
Web Application
JavaScript
Web Development
API
ChatGPT
$40 hourly
Iryna K.
- 5.0/5
- (4 jobs)
9 years being a Senior Salesforce Developer, Admin, Solution Architect and I love it ☁️ I would love to assist you with: ☁️ Salesforce Sales, Service, Experience (Communities), Marketing, Health Cloud implementation and customization ☁️ Salesforce API integrations (OpenAI, ChatGPT, WhatsApp, Mailchimp, Stripe, QuickBooks Online, Google, Zero, etc.) and for sure with your product ☁️ Appexchange application development using Apex, Visualforce, Lightning Web Components (LWC), passing Security Review and of course further assistance ☁️ Migration from your current CRM system (HubSpot, Microsoft Dynamics 365, Zoho, Pipedrive, etc.) to Salesforce ☁️ Automating my clients' solutions using Salesforce Flows, Process Builder, Apex triggers ☁️ Salesforce Audit and health check of existing Salesforce implementations with recommendations for enhancements and many more. I am also with an in-house Salesforce ISV and Consulting partner based in Warszawa, Poland :) Just drop me a line anytime, I am happy to assist you asap.

API Integration
Heroku
Salesforce Einstein
AppExchange
API
Customer Relationship Management
JavaScript
Visualforce
Salesforce
Salesforce App Development
Salesforce Service Cloud
Salesforce Sales Cloud
Salesforce Lightning
Apex
Salesforce CRM
$39 hourly
Bohdan F.
- 5.0/5
- (38 jobs)
Hello!👋 Welcome to my world of Automation and Integration! My passion is creating 👨🏻‍💻 seamless workflows for multi-channel campaigns and automation, including email, web, social media, SMS, and more, that help you reach, engage, and convert your audience more effectively than ever 📶 At the same time, my expertise extends beyond mere integration – I delve deep into CRM customization, ensuring that your system aligns perfectly with your unique business processes and objectives. Whether you're aiming to automate repetitive tasks, integrate diverse systems seamlessly, or optimize your sales and marketing strategies, I provide comprehensive solutions designed to elevate your business to new heights 🧗🏾 My 🔝 Skills: ✅ Make.com (ex-Integromat), Zapier ✅ HighLevel ✅ Airtable, SmartSuite ✅ ActiveCampaign ✅ ClickUp ✅ Pipedrive, Hubspot ✅ ChatGPT Driven by a passion for excellence, I prioritize clear communication, timely delivery, and ongoing support to ensure your automation initiatives yield tangible results. By partnering with me, you gain access to top-tier technical expertise and a dedicated ally committed to your success. Ready to unlock the full potential of automation and transform your business? Reach out today to discuss how I can tailor my services to meet your needs and propel your organization forward.

API Integration
JSON
GPT-4 API
No-Code Development
Pipedrive
ClickUp
ChatGPT
Airtable
Automation
HubSpot
ActiveCampaign
Zapier
Marketing Automation
HighLevel
Make.com
$74 hourly
Jakub S.
- 5.0/5
- (15 jobs)
Upwork Top Rated (Top 10%) | AI Automation Expert | Make Advanced | ClickUp Expert Certified Hey, I'm Jacob 👋 For over 5 years, I've tackled countless AI-driven workflow automation projects, turning complex tools into streamlined productivity powerhouses. I've built 200+ automations across various industries, helping businesses save time, reduce costs, and scale efficiently. 𝗖𝗹𝗶𝗲𝗻𝘁 𝗥𝗲𝘀𝘂𝗹𝘁𝘀: - Saved 100+ hours/month for a $5M/yr agency through automated lead management - Worked with global brands like Motorola ($73B) & UBS ($106B) - Saved $17K+ annually by modernizing data operations - Boosted revenue by 34% with AI-powered marketing automation - Helped dozens of businesses streamline operations and scale effortlessly ⌛ Over 5,000+ hours of automation delivered 🗣 Proactive, clear communication throughout projects ☑️ On-time delivery, every time ❌ Never outsourced - you work directly with me 📆 Available for immediate consultation 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗪𝗶𝘁𝗵: 1️⃣ Custom Workflow Automation - Build scalable systems with Make.com, Zapier & N8N 2️⃣ AI Integration - Implement ChatGPT, Claude & other AI models into your workflows 3️⃣ Custom System Integration - Connect your existing tools into seamless workflows 4️⃣ Process Automation - Eliminate repetitive tasks and streamline operations 5️⃣ Data Management Systems - Build automated data collection, processing, and reporting 6️⃣ AI-Enhanced Workflows - Leverage AI to make your systems smarter and more efficient 𝗧𝗵𝗲 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗘𝘅𝗽𝗲𝗰𝘁: ✅ Major Cost Reductions - My automations typically save clients 20-40 hours per week ✅ Increased Efficiency - Automated systems that work 24/7 without manual intervention ✅ Happier Teams - Eliminate repetitive tasks and let your team focus on high-value work ✅ Error Reduction - Minimize human error through consistent, automated processes ✅ Scalable Growth - Systems that grow with your business without adding overhead 𝗠𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜𝗻𝗰𝗹𝘂𝗱𝗲: → Process Analysis & Optimization - Identify bottlenecks and streamline operations → Custom Automation Development - Build tailor-made automations for any business need → System Integration - Connect disparate tools into a unified workflow → AI Implementation - Leverage AI to supercharge your automations → Training & Documentation - Ensure your team can maintain and scale systems 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗚𝗲𝘁: → Comprehensive review of current processes → Custom-built automation workflows tailored to your goals → Seamless implementation and integration → Custom reporting dashboards → Detailed documentation and training videos → Ongoing support to ensure your systems scale with you → 100% satisfaction guarantee 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺 𝗬𝗼𝘂𝗿 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀? Let's schedule a quick call to discuss your automation needs. I offer: → Unlimited revisions until you're 100% satisfied → Clear project scoping with no-surprise pricing → Detailed documentation so you own and understand your systems If you're looking for bulletproof automation that delivers results, I'd love to chat. --- 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Make.com, Zapier, n8n, ChatGPT, OpenAI, Claude, AI, Automation, Workflows, API, Integration, Webhooks, HubSpot, Pipedrive, Airtable, Zoho, HighLevel, GoHighLevel, GHL, Salesforce, Trello, Asana, ClickUp, Monday, Slack, Gravity, Cognito Forms, JotForm, Typeform, JustCall, Twilio, RingCentral, OpenPhone, MailChimp, ActiveCampaign, Klaviyo, Constant Contact, Xero, Quickbooks Online, Square, Stripe, PayPal, Calendly, Cal AI, AcuityScheduling, Jobber, PandaDoc, DocuSign, Hellosign, G-Suite, Google Sheets, Gmail, Google Drive, Google Calendar, Microsoft Teams, Microsoft Outlook, Microsoft Excel, ZOHO CRM, ZOHO Books, ZOHO Analytics, ZOHO Projects, Notion, MailerLite, ClickFunnels, BigCommerce, WooCommerce, Shopify, Wrike, Basecamp, Sugar CRM, Freshsales, Paragon, QuickBooks, Web Scraping, GoHighLevel, GPT-4, GPT-4o, Gemini, llama-3, Mixtrал, Microsoft Dynamics, Microsoft Office 365, Power Automate, Python, Service Titan, Scribe, Smartsheet, SmartConnect, Stack.ai, Zendesk, Zoho Deluge, Zoho One, IFTTT, Tray.io, Pipedream, LangChain, Botpress, Flowise, AppSheet, Azure, Bitrix24, Cheetah, Confluence, Dubsado, Freshdesk, Google Analytics, Google Data Studio, Google Workspace, Intercom, Jira, Kommo, Macros, AWS, Firebase, Vercel, Node.js, LeadConnector, Unbounce, Google Forms, Slides, Contacts, Tasks, Looker Studio, Chrome extensions, bubble.io, webflow.io, wix, OAuth, Brevo, Keap, Smapply, ConvertKit, Monday Sales CRM, YouTrack, Semrush, UnBounce, Facebook Ads, Youtube Analytics, Firestore, LinkedIn

API Integration
Python
Make Build Script
CRM Automation
Automated Workflow
Business Process Automation
Marketing Automation
ChatGPT
API
Task Automation
Scripting
Automation
Zapier
n8n
Make.com
$39 hourly
Anton M.
- 5.0/5
- (2 jobs)
🥇As a versatile Full Stack 🛠️Retool Developer with profound expertise in Looker Studio, AI Automation, and specialized Dashboard Solutions, I'm pretty sure that I can help you perfectly. 🚀 𝑲𝒆𝒚 𝑷𝒓𝒐𝒋𝒆𝒄𝒕𝒔 𝑨𝒄𝒓𝒐𝒔𝒔 𝑫𝒊𝒗𝒆𝒓𝒔𝒆 𝑺𝒆𝒄𝒕𝒐𝒓𝒔 💰 Financial Services : Developed a complex Retool-based backend for a leading investment firm, enabling real-time data analysis and portfolio management through integrated AI Automation and Looker Studio dashboards. 🎓 Education : Designed an interactive dashboard for a major online learning platform, utilizing Looker Studio to provide insights into student engagement and course effectiveness, improving curriculum planning. 🏠 Real Estate : Implemented a custom property management solution that automated data collection and reporting, enhancing decision-making processes for real estate agents and investors. 🤖 Business Automation : Delivered an AI-driven business intelligence system for a logistics company, optimizing routing and scheduling, which resulted in a 20% reduction in operational costs. 🩺 Healthcare : Built a comprehensive patient management application using Retool, aiding healthcare providers in tracking patient visits, treatments, and outcomes through intuitive dashboards and automated notifications. 🛍️ Retail and E-commerce : Designed a dynamic pricing algorithm and inventory management dashboard for a rapidly growing e-commerce platform, leveraging AI tools to predict demand and optimize stock levels. 🏭 Manufacturing : Developed a predictive maintenance solution for a manufacturing plant, utilizing AI to forecast machine breakdowns and ensure efficient maintenance scheduling, minimizing downtime. 📈 Marketing and Advertising : Created an AI-powered campaign performance dashboard for a digital marketing agency, integrating Looker Studio to track and analyze key metrics, enhancing strategic decision-making. 🚀 𝑻𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝑻𝒐𝒐𝒍𝒌𝒊𝒕 ✅ Full Stack Development: Expertise in JavaScript, Python, and SQL, with proficiency in frameworks such as React, Node.js, and Django. ✅ Retool Expertise: Skilled in customizing and deploying Retool applications for dynamic and responsive internal tools. ✅ Business Intelligence: Advanced knowledge in Looker Studio, transforming complex datasets into intuitive, actionable insights. ✅ AI & Automation: Mastery in integrating AI tools for process automation, including natural language processing and machine learning algorithms. Let's transform your vision into a remarkable reality. 😃

API Integration
AI Chatbot
AI Agent Development
Retrieval Augmented Generation
Generative AI
Plotly
Web Development
Analytics Dashboard
Data Visualization
Cloud Services
Docker
SQL
Python
JavaScript
Automation
$40 hourly
Maksym P.
- 5.0/5
- (10 jobs)
🚀 Why Me ✅ 15+ years delivering scalable SaaS solutions, 10+ projects done ✅ Led development of complex B2B/SaaS platforms ✅ Success-Oriented: My goal is to make your project a success, on time and on budget. ✅ Transparent Communication: I communicate the whole process in detail, ensuring you’re informed every step of the way. ✅ Comprehensive Documentation: Detailed documentation is provided for all projects. ✅ Quality Assurance: I deliver clean code, automated tests, and a performant codebase, with a focus on software debugging and troubleshoot Programming is my passion, and I love turning ideas into reality through code. After years of working as a web developer, transitioning into building my own IT agency was a natural progression. I am excited to bring your projects into our development pipeline 🤩. 🌐 Let’s Work Together At Laspra Soft, we tackle complex projects with ease, delivering scalable and maintainable solutions. Our expertise in both modern frameworks and legacy systems allows us to handle a wide range of projects, from greenfield developments to system modernizations. Whether you need a solo developer or a full team, Laspra Soft is equipped to bring your vision to life. We are committed to delivering projects that not only meet but exceed your expectations. Let’s discuss how we can drive your project to success! Best Regards, Maks Pustynnikov Founder, Laspra Soft More boring details: 💼 Core Competencies ✅ Full-Stack Development: Expertise in both front-end development and back-end development, using technologies like JavaScript, TypeScript, Python, PHP, Symfony, Laravel. ✅ API Development and Integration: Proficient in RESTful API, GraphQL, API development, and API integration, including third-party services like Stripe API, Twilio API. ✅ E-commerce and Marketplace Solutions: Experience with Ecommerce websites using WooCommerce, Shopify, Magento, WordPress and Drupal ✅ Database Design and Optimization: Expertise in MySQL, MariaDB, PostgreSQL, MongoDB, SQLite, Microsoft SQL Server. ✅ DevOps and Cloud Infrastructure: Proficient with Docker, CI/CD, Ansible, AWS (including AWS Lambda and AWS Amplify), Google Cloud Platform, NGINX, Cloudflare, and Linux System Administration. ✅ Content Management Systems: Proficient in WordPress development. 🛠️ Tech Stack • Front-End: HTML, HTML5, CSS, JavaScript, TypeScript, React (including Next.js, Redux, Material UI, Tailwind CSS), Vue.js, Angular, AngularJS, jQuery, Bootstrap, Sass, Less, Responsive Design, Adaptive Web Design, UX & UI Design. • Back-End: PHP (including Laravel, Symfony, Custom PHP, PHP scripts), Node.js (with ExpressJS, NestJS) • Databases: MySQL, MariaDB, PostgreSQL, MongoDB, SQLite, Firebase, Azure Cosmos DB, Oracle Database, Microsoft SQL Server, Database Development, Database Architecture, Database Design, Database Management, Database Integration, ETL processes. • DevOps: Docker, CI/CD, Ansible, AWS, AWS Lambda, AWS Amplify, Microsoft Azure, Google Cloud Platform, NGINX, Cloudflare, Linux System Administration, GitLab, Bitbucket, Git, Jenkins, Kubernetes. • APIs and Integrations: RESTful API, GraphQL, Stripe Integration, Twilio API, OpenAI API, Instagram API, Twitter/X API, Zapier, Sendy, DocuSign. • CMS and E-commerce: WordPress, WooCommerce, Shopify, Magento, Drupal, Elementor, WPML, Wix, Webflow, Bubble.io. • AI and Machine Learning: Artificial Intelligence, Machine Learning, AI Development, AI Model Integration, Natural Language Processing, Artificial Neural Networks, AI Bots, OpenAI API, OCR Software. • Other Tools: Adobe Photoshop, Figma, Sketch, Jest, Webpack, Babel, Sass, Less, JSON, XML, YAML, Docker Compose, Terraform, Jira, Confluence, Slack, Microsoft Teams. 🏆 Industries Served ➡️ E-commerce and Marketplaces: Building scalable ecommerce websites and marketplaces with secure payment processing and payment gateway integration. ➡️ Finance and Fintech: Developing secure applications and integrating with financial APIs. ➡️ Healthcare and Telemedicine: Creating compliant solutions with a focus on data security and privacy. ➡️ Education and E-learning: Building platforms with interactive features. ➡️ Travel and Hospitality: Developing booking systems, dashboard interfaces, and customer portals. ➡️ Custom Business Solutions: Tailoring applications to meet unique business requirements, including CRM development, ERP systems, and business logic layer implementations.

API Integration
Full-Stack Development
Node.js
Web Design
React
WordPress
HTML
CSS
JavaScript
Web Development
MySQL
Python
API
PHP
Symfony
$50 hourly
Patryk S.
- 4.9/5
- (94 jobs)
🏆 TOP WEB ANIMATION EXPERT ON UPWORK 🚀 Experience working in multiple timezones from Seattle to Sydney I'm Patryk, a versatile and passionate Front-end Developer / Creative Developer and Web Animator. With over 10 years in the IT industry, I've honed my skills in crafting engaging digital experiences and intuitive web applications. 🚀 What I Offer - Building web apps with Vue.js / Nuxt.js, complete with animations and e-commerce capabilities. - Developing WordPress custom themes with e-commerce integration. - Creating web animated banners with GreenSock - Developing layouts with CSS Grid. - Crafting SVG draw, morph animations, Web Animations HTML 5, and Canvas Animations. - Converting PSD to HTML. 🌟 My Professional Journey Led creative projects at TastySites, ensuring digital masterpieces that connect with audiences worldwide. Collaborated with top-tier agencies (Baernholdt, GreenRubino, AKA, We Push Buttons) on projects for clients like Novo Nordisk, Disney, Mazda, and Paco Rabanne. 👨‍💻 Freelance Expertise Over a decade of freelancing experience, building lasting relationships and continuously evolving in my craft. Committed to delivering excellence and enjoying the collaborative process. 🌱 Life Beyond Screens Nature lover and avid reader, exploring everything from sci-fi and fantasy to personal development. Enthusiastic about sharing my drone and GoPro adventures, blending technology with the beauty of nature. 🔗 Let's Collaborate Eager to discuss new projects, offer guidance, or chat about the latest in web development and nature adventures. Check out my portfolio at TastySites.pl for a glimpse of my work. Looking forward to creating amazing projects with you on UpWork! Have a great one!

API Integration
Web Application
Figma
Animation
Web Development
CSS 3
Ecommerce Website Development
Tailwind CSS
GSAP
SVG
Front-End Development
Three.js
WordPress
JavaScript
Nuxt.js
$60 hourly
Aliaksei A.
- 5.0/5
- (13 jobs)
Hello guys, My name is Alex. I have 15+ years of experience in Software Development. Before joining the freelance community I spent 15 years working in different corporations to get the proper experience and knowledge. I'm an expert in software development including the full design of the system from the perspective of architecture including microservice architecture. Special offers for you: • Professional consultation on software development topics (e.g. development, learning, DB queries and optimizations - MySQL, MSSQL, Mongo DB, etc), • Professional consultation on Migration (e.g. Web Form to .Net Core or similar), Architecture, Development, Team Building, Automation Deployment, etc.; • ASAP creation of the application architecture (proof of concept); • ASAP resolving performance issues related to bad code, DB queries, architectural design issues, etc; • Maintenance or development from scratch; • Any job related to software development area; I created many startups and participated in the creation of an architecture of big projects (the list is below). I used many different technologies and now I just need to look at the code to tell you where you'll have a performance issue or bug. No need to debug. I successfully upgraded several projects from Web Forms to .Net Core. I used several DB (MS SQL, MySQL, and MongoDB). I know perfect SDLC and SOLID principles so my estimations are perfect. I'm specializing in resolving performance issues (slow requests, refactoring bad code, resolving issues with bad practices, migrations from old to the new technologies, etc), Some more examples of recent activities: - creation modern apps with new technologies, microservice architecture, monolith apps etc..; - migration apps from Web Forms to .Net Core; - developed high-load applications with 50000+ request per second - microservice architecture; - creation of an architecture for huge e-commerce projects and small product apps; - trades, insurance, bank software, corporate solutions, and custom product apps; - usage of excel/CSV/PDF in .net core/web forms/MVC apps for generation reports; - databases like SQL Server, MySql, MongoDB; - Azure Service Bus/RabbitMQ/Hangfire for creating pub-subscr apps; - the configuration of Azure for production including release engineering (DevOps/TC/Octopus). - INTEGRATIONS: - Zapier, Marketo, Reveal, Salesforce APIs, etc.; - Enrichment API; - Payments API (Stripe); - Many other APIs. And many others. Short Info: • 15+ years in Software Development • Expert in implementing large scale and complex software solutions • Expert in management, experience with an internal/external staffing (on/offshore mix of resources) • Perfect knowledge of software development processes (SDLC) & methodologies • Business trips in East and West Europe Background projects are: • Trades (UK) • Social communication, virtual events (US) • Insurance Soft (US) • Pharmaceutical Soft (US) • Office security soft (ES) • Plex (US) • NakedAuto (social project) • CatInPhone (Android application) • HawkSearch (US) HighLoad (multiple technologies and DBs: Mongo, Elastic, Relation DB) • Bank Soft (BY) • Job.ru (RU) • hundreds of small projects Technical Background: • .NET, C#, VB.Net, Asp.Net (Web Forms, MVC, Web API, .Net Core), REST, ORMs (EF, Dapper, custom ORMs) etc. • Ajax, JavaScript (jQuery, Bootstrap, Angular, Vue JS, many custom JS libraries) • XML/JSON, CSS/LESS, HTML • SVN, GIT, TFS, TeamCity, Octopus, Unit testing, Selenium • MS SQL Server, MySQL, Redis • MongoDB • RabbitMQ, Service Bus, Kafka • Cloud services Azure

API Integration
JavaScript
ASP.NET Web API
.NET Core
Microsoft Message Queue Server
Performance Optimization
Microservice
ASP.NET Core
C#
SQL
ASP.NET
.NET Framework
Redis
MongoDB
Microsoft SQL Server
$50 hourly
Alexander P.
- 5.0/5
- (37 jobs)
🔥 Hello! I’m Alexander, a full-stack developer with 15+ years of experience in delivering high-quality web and mobile applications. Also I specialize in API development and integrations, building seamless connections across platforms and systems. With over 150 successful projects completed worldwide, I focus on delivering scalable, secure, and business-oriented solutions. If you’re looking for a reliable partner to handle your project from start to finish, I’m here to help. 𝗠𝗬 𝗧𝗘𝗖𝗛𝗡𝗜𝗖𝗔𝗟 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 (areas marked with an asterisk (*) are those I am currently studying to enhance my programming skills and develop experience): 𝗠𝗢𝗕𝗜𝗟𝗘 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧: • Flutter, Dart, Android, iOS, Java*, Kotlin*, Xcode, Firebase • State Management: Riverpod, BloC 𝗕𝗔𝗖𝗞𝗘𝗡𝗗 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧: • PHP8, Yii2 • Node.js, Express.js, Axios • Laravel*, Symfony* 𝗪𝗘𝗕𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 / 𝗔𝗣𝗜 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 / 𝗔𝗣𝗜 𝗜𝗡𝗧𝗘𝗚𝗥𝗔𝗧𝗜𝗢𝗡: • RESTful API (PHP, Node.js), Swagger / OpenAPI, JSON, XML, SOAP, Postman • 3rd Party APIs: RapidAPI (APIs marketplace), ChatGPT, Google, Yandex, 2GIS, VK • Marketing Automation: Twilio (Whatsapp, SMS, Voice), HighLevel, Make.com, Zapier • CRM APIs: Klaviyo, Zoho, CloseCRM, Podio • Email Services: Brevo, MailerSend, Mailgun, Google, Yandex, MJML • Notifications: Firebase, Telegram, Email, SMS, Web Push API • Maps: Google Maps, OpenStreetMap, Leaflet, Yandex Maps, Geocoding API • ANY other well-documented APIs • gRPC*, Go*, Fiber* 𝗙𝗥𝗢𝗡𝗧𝗘𝗡𝗗 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧: • HTML5, SCSS, Flexbox, CSS3, Bootstrap 5 • TypeScript, JavaScript (ES6) • Vite, Webpack • npm, bower, yarn • jQuery, Pixi.js • React*, Next.js*, redux*, • Vue.js*, Nuxt.js*, Pinia* 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦: • MariaDB, MySQL, SQL, Indexes, Structure / Query Optimization • OpenSearch, Elasticsearch, Sphinx • Redis, Memcached, MongoDB • Firestore, Realtime Database, Supabase • Neo4j • PostgreSQL* 𝗛𝗢𝗦𝗧𝗜𝗡𝗚 𝗣𝗥𝗢𝗩𝗜𝗗𝗘𝗥𝗦: • DigitalOcean, Hetzner, Selectel • VPS, VDS, Cloud Hosting • DNS Settings 𝗪𝗘𝗕 𝗦𝗘𝗥𝗩𝗘𝗥𝗦: • Nginx, PHP-FPM, HTTP/2, SSL (Let's Encrypt) • Nginx with HTTP/3 (QUIC)*, Varnish* 𝗣𝗔𝗥𝗦𝗜𝗡𝗚 / 𝗗𝗔𝗧𝗔 𝗦𝗖𝗥𝗔𝗣𝗣𝗜𝗡𝗚: • PHP (cURL, DOM Crawler) • Complex Parsing Techniques (Regular Expressions, XPath) • Browser Automation (Selenium, Puppeteer) • Optimization (Proxies, Parallel Processes, CAPTCHA Bypass) 𝗔𝗥𝗖𝗛𝗜𝗧𝗘𝗖𝗧𝗨𝗥𝗘: • PRIMARY: DDD + Service Layer, MVC • SOLID, GRASP, DRY • DI, Microservices (RESTful)* 𝗕𝗥𝗢𝗪𝗦𝗘𝗥 𝗘𝗫𝗧𝗘𝗡𝗦𝗜𝗢𝗡𝗦: • TypeScript, SCSS, Vite • Chrome, Brave 𝗕𝗔𝗖𝗞𝗚𝗥𝗢𝗨𝗡𝗗 𝗧𝗔𝗦𝗞𝗦: • Cron, Supervisor, Systemd • Apache Kafka*, RabbitMQ* 𝗜𝗡𝗙𝗥𝗔𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘 & 𝗗𝗘𝗣𝗟𝗢𝗬𝗠𝗘𝗡𝗧: • Vagrant*, Docker*, Docker Compose*, Kubernetes* • CI/CD*, GitLab CI*, GitHub Actions* 𝗣𝗔𝗚𝗘 𝗟𝗢𝗔𝗗 𝗢𝗣𝗧𝗜𝗠𝗜𝗭𝗔𝗧𝗜𝗢𝗡: • Bundling, Lazy Loading (Images, Videos), GZIP • Web Server Tuning, CDN 𝗖𝗔𝗖𝗛𝗜𝗡𝗚 𝗦𝗧𝗥𝗔𝗧𝗘𝗚𝗜𝗘𝗦: • Redis, Memcached • Query, Page Fragment, Full-Page • HTTP (ETag, Last-Modified), Session Caching 𝗦𝗘𝗢: • Clean URLs, Canonical Tags, Optimized Routes, Robots.txt • Auto-Generated Sitemaps • Multilingual Support • Open Graph, Schema.org, JSON-LD Markup 𝗠𝗨𝗟𝗧𝗜-𝗟𝗔𝗡𝗚𝗨𝗔𝗚𝗘 𝗦𝗨𝗣𝗣𝗢𝗥𝗧: • Flutter and Web Applications • Unlimited Number of Locales 𝗥𝗘𝗔𝗟-𝗧𝗜𝗠𝗘 𝗙𝗘𝗔𝗧𝗨𝗥𝗘𝗦: • Chat: Yii2, Node.js, Redis, Socket.IO • AJAX, Firebase. WebRTC, WebSockets 𝗢𝗣𝗘𝗥𝗔𝗧𝗜𝗡𝗚 𝗦𝗬𝗦𝗧𝗘𝗠𝗦: • macOS 14, Ubuntu 24, Windows 11, • AMD Hackintosh 𝗦𝗖𝗥𝗜𝗣𝗧𝗜𝗡𝗚: • Bash, Perl 𝗗𝗢𝗖𝗨𝗠𝗘𝗡𝗧 𝗔𝗨𝗧𝗢𝗠𝗔𝗧𝗜𝗢𝗡: • PHPWord, PHPOffice, LibreOffice, wkhtmltopdf • Tesseract OCR (text from image) 𝗩𝗘𝗥𝗦𝗜𝗢𝗡 𝗖𝗢𝗡𝗧𝗥𝗢𝗟 𝗦𝗬𝗦𝗧𝗘𝗠𝗦: • Git, GitLab, GitHub 𝗗𝗔𝗧𝗔 𝗩𝗜𝗦𝗨𝗔𝗟𝗜𝗭𝗔𝗧𝗜𝗢𝗡: • Chart.js, D3.js, GoJS 𝗖𝗢𝗗𝗘 𝗧𝗘𝗦𝗧𝗜𝗡𝗚: • Xdebug, Codeception, PHPUnit • Cypress* 𝗣𝗔𝗬𝗠𝗘𝗡𝗧 𝗦𝗬𝗦𝗧𝗘𝗠𝗦: • Stripe, Stripe ACH, PaymentWall, YooKassa, ANY Bank Systems 𝗦𝗘𝗖𝗨𝗥𝗜𝗧𝗬: • Two-Factor Authentication, Google Authenticator, QR Codes, SMS 𝗚𝗥𝗔𝗣𝗛𝗜𝗖 𝗗𝗘𝗦𝗜𝗚𝗡 𝗧𝗢𝗢𝗟𝗦: • Photoshop, Illustrator, InDesign, CorelDRAW, Figma, Canva 𝗩𝗜𝗗𝗘𝗢 𝗘𝗗𝗜𝗧𝗜𝗡𝗚: • Adobe Premiere Pro 𝗗𝗔𝗧𝗔 𝗔𝗡𝗔𝗟𝗬𝗦𝗜𝗦 & 𝗖𝗔𝗟𝗖𝗨𝗟𝗔𝗧𝗜𝗢𝗡𝗦: • Microsoft Excel 𝗔𝗜 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧: • Python* 𝗣𝗥𝗢𝗝𝗘𝗖𝗧𝗦 𝗜'𝗠 𝗣𝗔𝗦𝗦𝗜𝗢𝗡𝗔𝗧𝗘 𝗔𝗕𝗢𝗨𝗧: • Web & Mobile – Fast websites, mobile apps, custom APIs • Data & Automation – Parsers, scrapers, browser extensions • SaaS & Startups – MVPs, scalable systems, backend solutions • Enterprise – Secure, large-scale corporate & government projects • Game Dev* (exploring) – New interactive experiences If you're looking for a dedicated developer who combines technical excellence with business insight, feel free to reach out. Let's discuss how I can contribute to the success of your next project. Best regards, Alexander

API Integration
PHP
Flutter
Front-End Development
Back-End Development
Payment Gateway Integration
Document Automation
Data Scraping
Google Chrome Extension
Database Architecture
Web Services Development
API Development
Mobile App Development
Web Development
Full-Stack Development
$30 hourly
Maryna R.
- 5.0/5
- (23 jobs)
⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 🥇 What's my benefit? - 10+ years of experience in web development. - successfully launched web applications, some of which received over $1 million in funding. - experience in creating software startups, especially when it involves complex user experiences. 🔥 100+ projects working in both scrum and kanban methodologies. In teams of 5-15 people I built and maintained web applications that are used by thousands of users a day from all over the world. Ensured the responsiveness, scalability, crossbrowser and cross-device compatibility. 🏆 Top Projects: - Frontend development for educational platform that hosts frontend and backend courses - React.js development for Fintech web application - renewable energy marketplace - Multisite platform front-end development for Bacardi 🏢 Domains: EdTech, Retail/Ecommerce, FinTech, Entartainment, Crypto, Bitcoin ⚒️ Tools: WebStorm, Visual Studio Code, Git, Github, Gitlab, npm, LESS, SaaS, Webpack, Yarn, Bower, Chrome DevTools, Jest, Swagger, Postman for API Integration 💯 Top skills: - Collaborating with other developers and stakeholders - Enjoying solving complex problems - I'm user-friendly interfaces addicted that meet the client's needs. - Solid foundation in data analysis and business logic. 👩‍💻 Technical skills: Robust skills in creating React + Node.js web applications. React.js development, CSS, JavaScript, CSS3, TypeScript, Next.js platform development, GraphQL, Node.js application development, Tailwind CSS My goal is to develop high-quality and innovative web development that make a positive impact. Do you want a web application for you business or update an existing one? ⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤

API Integration
SaaS
Web Application
GraphQL
TypeScript
CSS 3
Web Development
Redux
Node.js
Next.js
Tailwind CSS
JavaScript
CSS
React
HTML
$28 hourly
Oksana V.
- 5.0/5
- (14 jobs)
JavaScript full stack Developer (3.5+ years) with experience in building scalable, interactive, and secure web applications. I specialize in both backend and frontend development, delivering high-quality SaaS dashboards, dynamic UIs, and efficient API integrations using React, Next.js, Node.js, TypeScript, SSR, Supabase, React Query Tantask, Framer Motion, Shadcn, tailwind css. Technical Proficiencies: Frontend Development: Advanced skills in React, Next.js, Shadcn, Tailwind CSS, along with interactive libraries (ReactFlow, Highcharts.js, Charts.js, Framer Motion), optimizataion of frontend performance and caching (React Query Tantask), implement SSR. Backend & API Integration: Proficient with Node.js, Express.js, mern and serverless architectures (Firebase Cloud Functions, Supabase Edge Functions), integrating robust APIs like Binance, OpenAI, and OpenWeatherMap. Database & Authentication: Experience with Firebase Firestore, MongoDB, Supabase, and secure auth systems (Google Auth, Next Auth, Firebase Auth, JWT, OTP). SaaS & UI: Developing SaaS platforms, implementing drag-and-drop interfaces, PDF management, and converting Figma designs into responsive, pixel-perfect applications. Project Highlights: Healthcare Dashboard: A full-stack app, with task management (kanban, list views, dnd), calendar integration, and PDF file handling. Analytic Dashboards: Created a complex data builder and dynamic visualisations, secure user profile management. SaaS for Artists: Developed user authorisation, group collaboration, media management (text and audio), integrated audio players, and calendar functionalities. Services: - Figma UI to React - Building secure authorisation - SaaS Dashboards - PDF editors

API Integration
UI Animation
SaaS Development
Tailwind CSS
OpenAI Inc.
Supabase
Firebase
MERN Stack
TypeScript
ExpressJS
Next.js
Redux
Node.js
React
JavaScript
$30 hourly
Maksim S.
- 5.0/5
- (15 jobs)
Hello everyone👋! My name is Maksim. I am a Python + JavaScript Full Stack developer 👨🏻‍💻. I help clients achieve efficient and modern solutions to their tasks by utilizing cutting-edge technologies of 2024. My development skills enable me to create effective and innovative solutions that contribute to increasing profitability and business growth📈. The process of my work includes the following steps: 1️⃣ Discussing project details. 2️⃣ Choosing the technologies to use. 3️⃣ Setting a deadline. 4️⃣ Starting the work. 5️⃣ Throughout the project, I share progress updates and gather client feedback to achieve the desired outcome. 6️⃣ Testing the project. 7️⃣ Completing the project. I make sure that all client requirements are met and deliver the final result, including source code. My skills: ✅ Professional in Backend development. ✅ API integration and development. ✅ Bot development. ✅ Docker containerization. ✅ Microservices development. ✅ Frontend experience in React. My "nevers": ❌ I never miss deadlines. ❌ I never take on more work than I can handle. ❌ I never submit proposals before thoroughly reading and analyzing the task. ❌ I never disappear in the middle of a project and ensure its complete execution. ❌ I never finish a project until I am proud of it. ❌ I never use technologies I don't fully understand. I am looking forward to the opportunity to collaborate with you and turn your ideas into reality using Python + JS👋!

API Integration
Binance Coin
Scripting
GPT Chatbot
WhatsApp
Facebook Live API
Telegram API
Web API
AI Chatbot
Bot Development
AI Model Integration
GPT API
API Development
Microservice
Web Development
$25 hourly
Stepan H.
- 4.9/5
- (7 jobs)
💡 Looking for a Effective Way to Build & Automate? Let’s Talk! 🚀 Hi, I'm Stephan! 🙋‍♂️ I help my clients and businesses build, automate, and scale their products—whether it’s a SaaS platform, AI-powered workflows, a marketplace, or a custom CRM/ERP. I'm here to turn your vision into reality, focusing on scalable, well-structured solutions that bring ideas to life without unnecessary complexity. What I Do: ✅ Full-stack / Low-code / No-code development: Data architecture, Building UI , setting up workflows ✅ Process Automation – Simplifying and automating processes to boost efficiency, minimize errors, and accelerate business outcomes. ✅ AI Automation – Implementing AI-powered solutions to enhance decision-making and efficiency. ✅ Consulting & Product research – Analyzing your challenges, exploring the best solutions, and delivering strategic guidance to enhance performance and drive measurable results. Why Work With Me? 💡 Clear, Practical Vision – With 6 years of development experience, I help you understand what's achievable, how quickly it can be done, and the resources required. ⚡ Efficient, Scalable Solutions – I focus on delivering high-quality results using the best mix of no-code, low-code, and custom development. 🛠 Simplicity with Flexibility – My approach keeps things simple without compromising flexibility, ensuring your product can scale and evolve with your business. 📈 Long-Term Focus – I build solutions that solve your current needs and set you up for sustainable growth in the future. 🚀 Ready to build ? Contact me with deatails of ypur project, and let's get started!

API Integration
Digital Marketing
Business Development
n8n
Bubble.io
Supabase
Low-Code Development
No-Code Development
AI Agent Development
Marketing Automation
Automated Workflow
Business Process Automation
AI Development
Web Development
Full-Stack Development
$30 hourly
Matvey F.
- 5.0/5
- (12 jobs)
Hello there! You’re in the right place! I work with leading IT companies, start-ups, and growing businesses to help them achieve their goals in their projects. I help my clients with: Python, Web Scraping, Selenium, Parsing, Databases (PostgreSQL), and Back-End development in general. But it's not the limit at all! While working with me, you will get rid of spaghetti-code and great communication and all responses in the 24-hour window and get your job task done. Hope to hear from you, Matvey F.

API Integration
Beautiful Soup
PyQt
Firebase
Reverse Engineering
Flask
Appium
Selenium
Web Scraping
PostgreSQL
Python
$30 hourly
Adam B.
- 5.0/5
- (8 jobs)
Live Chat Software Employee (Tidio Chat). I'm creating Tidio projects with Chatbot workflows and integrations for a living. I also love building integrations on platforms such as Zapier.com, and Tray.io (that's my main specialization). If you are looking for someone to take care of your Zapier/Tray.io workflows I am the ideal person for that, because I'm obsessed with this topic. I can connect to any database/software that has public API documentation and exchange information between them.

API Integration
CSS
HTML
Troubleshooting
Generative AI Prompt
JavaScript
Tidio
Make.com
Zapier
Chatbot
API
Implementation
$20 hourly
Polina N.
- 5.0/5
- (19 jobs)
🚀 Looking to streamline your operations and boost efficiency? With over 12 years of experience in IT, I specialize in automating processes that help businesses reduce manual tasks, optimize workflows, and enhance performance using no-code/low-code solutions. 🧑‍💼 About Me: With a background as a Business Analyst, Product Owner, and Project Manager, I bring both technical expertise and a strategic approach to solving complex business challenges. My goal is to make your operations smoother and more efficient by leveraging cutting-edge no-code tools. 💡 My Expertise Includes: ❇️ Automation Platforms: Airtable, SmartSuite, Make.com, n8n, Custom APIs ❇️ Project & Task Management: Monday, Asana, ClickUp, Notion, Coda, GDrive ❇️ Website & App Development: WordPress, Wix, Webflow, Softr, Glide, Bubble, Adalo ❇️ CRM & Workflow Optimization: Custom workflows, CRM setups, and automation to improve business efficiency ⚙️ Services Offered: ▪️ Software and CRM Setups: from initial setup to customization, I'll ensure your software and CRM solutions are tailored to your business needs. ▪️ Workflow Audits: identify inefficiencies and bottlenecks in your workflows and suggest improvements for optimized performance. ▪️ Custom Workflow Builds: tailor-made workflows designed to fit your unique business requirements, ensuring seamless operations. ▪️ Workflow Designs: visualize your workflows with intuitive designs that enhance clarity and efficiency. ▪️ Simple Automation: implement straightforward automation solutions to streamline repetitive tasks and save time. 🛠️ Tools & Technologies: In addition to my proficiency in management tools such as Jira, Trello, and Confluence, I’m skilled in using design tools like Sketch, Figma, and Photoshop. I'm also experienced with platforms like draw.io, GitHub, and GitLab. My technical skills include expertise in HTML, CSS, JavaScript, and SQL, allowing me to handle a wide range of projects confidently and efficiently. 🎯 Commitment to Quality: I’m committed to delivering high-quality, scalable solutions designed to fit your unique business needs. Your satisfaction and business success are my priorities. 🤝 Let’s Connect: Ready to automate and elevate your operations? Let’s discuss how I can help you achieve success through no-code automation.

API Integration
Business Process Automation
Database Administration
Marketing Automation
Data Scraping
ChatGPT
Automation
Zapier
ActiveCampaign
Make.com
Airtable
Webflow
Figma
WordPress
Wix
$50 hourly
Robert R.
- 5.0/5
- (21 jobs)
As a seasoned Senior Software Engineer, I've amassed a wealth of experience working with various technologies over the years. My expertise lies particularly in Java and Spring Boot, where I've specialized in developing robust and efficient solutions. I've collaborated with teams worldwide, showcasing my adaptability, and I've also successfully managed solo projects. My background spans diverse work environments, from agile startups to established corporations, providing me with a broad perspective and versatile skill set. My project portfolio encompasses a wide array of domains, including advertising, mobile solutions, online education, media, and fintech. This breadth of experience enables me to tackle challenges from multiple angles and deliver comprehensive solutions. I'm passionate about delivering high-quality work and thrive on collaboration within dynamic teams. I'm eager to bring my expertise to your projects, contributing to innovation and collective success. Let's connect and explore how I can elevate your projects with my proven track record.

API Integration
Messaging System
AWS Application
Software Architecture & Design
API
Database Architecture
CI/CD
Docker
RESTful Architecture
Containerization
Vue.js
Spring Framework
Java
Spring Boot
$55 hourly
Jakub W.
- 5.0/5
- (9 jobs)
Are you interested in using data to drive your business forward? You found the right person! I'm Jakub, a seasoned Back-End Developer and specialist in Google Analytics and Tracking Implementation with a ten-year track record in the field. With a strong background in both programming and analytics, I can transform your data into an insight-generating powerhouse that will help you increase your profits and market presence. ► 𝗪𝗵𝗮𝘁 𝘀𝗲𝘁𝘀 𝗺𝗲 𝗮𝗽𝗮𝗿𝘁? I tackle complex technical challenges with ease, thanks to my deep expertise in back-end programming and web development. I ensure that your tracking systems are not only robust but also seamlessly integrated with your business processes. My expertise extends beyond traditional Google Analytics and Google Tag Manager implementations, offering advanced solutions in database design, web scraping, API integrations and custom data solutions. ► 𝗔𝗰𝗵𝗶𝗲𝘃𝗶𝗻𝗴 𝗴𝗿𝗲𝗮𝘁 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 𝗺𝗲𝗮𝗻𝘀 𝗮𝘀𝗸𝗶𝗻𝗴 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗾𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀! How can optimizing your data flow enhance your operational efficiency? Are your tracking systems capturing the right data to make informed decisions? How can custom data solutions improve your standard and non-standard data sources? Believe it or not, I can provide insights that not only track what is happening but also why it is happening, allowing for strategic adjustments that drive real results. Let's get in touch if you want to enhance your operational insights and data strategy. ► 𝗠𝘆 𝗽𝗿𝗼𝗰𝗲𝘀𝘀: 1. Introductory call We start by understanding your current operational setup, needs, and strategic goals. 2. Tracking and systems audit I conduct a thorough audit of over 200 checkpoints across your analytics setups, including Google Analytics, Tag Manager, and your custom back-end systems to establish a clear optimization roadmap. 3. Data strategy development Drawing from the initial discussion and audit insights, I design a customized plan that targets your specific business objectives. 4. Implementation and optimization We then implement the plan, focusing on robust testing and refinement to ensure that every piece of code delivers its intended impact. 5. Wrap-up and continuous improvement After completing the project, we review the outcomes and discuss strategies for ongoing data management and optimization. ► 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗱𝗼 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀? - Google Analytics 4 Audit - Google Analytics 4 Setup and Tracking - Google Tag Manager Audit - Google Tag Manager Setup and Management - GTM Server-Side Tracking - E-commerce Tracking - Google Ads Conversion Tracking - Pixel Setup and Tracking (Facebook/Meta, TikTok, Microsoft/Bing Ads, LinkedIn, Pinterest, etc) - Looker (Google Data) Studio Dashboards - Offline Conversion Tracking - Google Analytics Funnel Setup and Analysis - Facebook/Meta Conversion and Event Tracking - Lifetime Value (LTV) Tracking and Analysis - BigQuery and SQL Analysis - Advanced Web Scraping (Python) - Custom API/Data Extraction Solutions (Python, Java) - Selenium Testing for Web Applications (Java, Python) - Database Management and Design (MySQL) - Comprehensive Data Analysis and Reporting - Development of Custom Web Applications and Scripts (Java, Python) 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝘂𝗻𝗹𝗼𝗰𝗸 𝘁𝗵𝗲 𝗳𝘂𝗹𝗹 𝗽𝗼𝘁𝗲𝗻𝘁𝗶𝗮𝗹 𝗼𝗳 𝘆𝗼𝘂𝗿 𝗱𝗮𝘁𝗮? Let’s discuss your project and start paving your pathway to success! Looking forward to collaborating with you, Jakub

API Integration
Piwik PRO
Google Ads
Google Analytics 4
Analytics & Tracking Setup
Data Access Layer
Data Migration
Data Modeling
Selenium
Web Scraping
Web Analytics
Ecommerce Website Development
MySQL Programming
Python
Java
$40 hourly
Ross H.
- 5.0/5
- (11 jobs)
✅3D development with Three.js ✅3D development with React Three Fiber ✅ 15+ years of experience ✅ 70+ projects delivered ✅ Upwork Top Rated ✅ 10k+ Hours ✅ 100% Success Score ✅ 5 Stars ✅ Backed by a skilled team for handling complex projects Doubtful about finding a developer 𝘄𝗵𝗼 𝗰𝗮𝗻 𝗵𝗮𝗻𝗱𝗹𝗲 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲𝘀 or pick up the pieces from a previous failure? Wondering if it's possible to have a bug-free, scalable solution? I've seen and solved it all. With a commitment to deliver and a track record of success, I am here to protect your project from common setbacks and elevate it to its highest potential. 👋Hi! I'm a Senior Full Stack Developer with over a decade of experience in the tech industry. I specialize in delivering comprehensive frontend and backend solutions, from concept to deployment, with a strong focus on 3D development using Three.js and React Three Fiber. Backed by solid experience as a Solution Architect and a Dev Lead, I gathered my own web dev team in 2015, growing it from the ground up as an extension of my expertise and vision. Now, with over 70 successful projects behind us, we focus on creating cutting-edge 3D solutions to help businesses thrive and grow. ---=== 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: ===--- 🔷Custom 2D/3D product configurators 🔷Scroll-based animations 🔷Particle effects and animations 🔷Data visualization solutions 🔷Interactive maps and navigation tools 🔷Physics-based simulations 🔷Development of bespoke interactive 2D and 3D tools: 🔷Custom interactive cursors 🔷Browser-based games ---=== Why I Stand Out: ===--- - 🛠️ 𝗨𝗻𝗺𝗮𝘁𝗰𝗵𝗲𝗱 𝗥𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘆: Every project I undertake is guaranteed to reach completion, irrespective of the initial condition or challenges encountered along the way. - 💼 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗦𝘂𝗽𝗽𝗼𝗿𝘁: My relationship with clients extends beyond project completion. I offer ongoing support to ensure continued success and adaptability in an ever-evolving digital landscape. - 👥 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗧𝗲𝗮𝗺 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽: While I thrive as a sole developer, I also lead a talented team of developers, ready to scale according to your project needs. This flexibility allows me to tackle projects of any size and complexity, delivering high-quality solutions on time and within budget. - 🎯 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: From initial consultation to final delivery, I manage all phases of the development cycle. This comprehensive approach ensures a seamless, efficient, and transparent process, culminating in a product that exceeds expectations. ---=== My Technical Foundation: ===--- - 📊 3D and Data Visualisation Mastery: Experienced with Three.js, React Three Fiber, WebGL, D3.js, Chart.js, GSAP, and techniques involving Canvas and SVG. - 🌐 Frontend Expertise: Proficient in HTML, CSS, JavaScript, TypeScript, and an array of frameworks & libraries including React.js (with Redux, Thunk, Sagas, Next.js), Bootstrap, Material UI, CSS in JS, Tailwind, and React-Admin. - 🔙 Backend Proficiency: Skilled in Node.js, Express.js; along with Feathers.js, RESTful API, GraphQL development, Socket.IO, Strapi, and BullMQ. - 💾 Database Management: Competent in managing data using SQL, PostgreSQL, MongoDB, and ElasticSearch. - 🚀 DevOps & Deployment: Knowledgeable in Docker, Kubernetes, and implementing CI/CD pipelines with GitHub, GitLab. I'm skilled in JavaScript, ReactJS, NodeJS, TypeScript, MongoDB, Express.js, VueJS, and Three.js. I use HTML, CSS, Bootstrap, Material UI, Sass, SCSS, LESS, Styled-Components, and Emotion. I excel in data visualization with D3.js, Chart.js, Highcharts, amCharts, and KonvaJS, and interactive design with FullPage.js, ScrollMagic, Isotope, Masonry, TinyMCE, Slate, Draft.js, XML.js, PDFMaker, and Sheet.js. Tools like React-Admin and ReCharts enhance usability. I create robust APIs using Preact, GraphQL, RESTful API Development, OpenAPI, and Postman, and frameworks like Socket.IO, Feathers.js, KoaJs, and Strapi. I handle tasks with Nodemailer, Passport.js, BullMQ, Agenda, CryptoJs, Node Scheduler, Jimp, Sharp, Wavesurfer.js, and FFMPEG.js. I develop geospatial apps with Leaflet, Mapbox, Google Maps API, GeoServer, PostGIS, and OpenStreetMaps. For testing, I use Jest, Mocha, Jasmine, Cypress, Puppeteer, Playwright, Artillery, and k6. I bring animation to life with GSAP, Anime.js, Particles.js, Three.js, Babylon.js, Verge3D, Pixi.js, Whitestorm.js, Physi.js, r3f, Snap.svg, and WebGL. I work with Lodash, Moment.js, DayJs, RxJS, Immutable.js, Axios, Cheerio, JSON Server, Faker.js, and Yup, and develop mobile/desktop apps with React Native and Electron. Deployment is streamlined with Docker, Kubernetes, Docker Compose, microservices, and serverless architecture.

API Integration
TypeScript
MySQL
API
MongoDB
Next.js
Web Design
Web Application
Full-Stack Development
Node.js
Web Development
HTML
CSS
React
JavaScript
$58 hourly
Iaroslav O.
- 4.9/5
- (161 jobs)
1. Shopify Expert. Any Shopify customization, PSD to Shopify converting. Transferring your store from any E-commerce platform to Shopify or from Shopify to any E-commerce platform. 2. Web developer experience over 10 years. Skills: PHP, Laravel, HTML, CSS, Javascript, Shopify, Wordpress, WooCommerce, Opencart, Prestashop, etc. 3. IOS and Android App devevlover: React Native, Vue.js. 4. AI development, including custom machine learning models, NLP solutions, and AI-driven automation. 5. Web designer experience over 10 years. Skills: XD, Figma, Adobe Photoshop,

API Integration
Shopify Plus
Shopify Apps
Shopify Development
JavaScript
Liquid
PHP
Laravel
Java
Front-End Development
Ecommerce Website Development
Website Customization
HTML5
Shopify
WordPress
$40 hourly
Khrystyna V.
- 5.0/5
- (48 jobs)
💻 My greatest strengths are my extensive experience and deep expertise in React development and Project Management. I’ve successfully completed numerous projects using React for both web and mobile applications and am committed to continuously enhancing my skills. Here are some key metrics showcasing my professionalism: ⭐ 11,000+ hours worked on Upwork ✅ 70+ successfully executed projects 🔧 Excellent troubleshooting skills 🏆 Exceptional Top Rated Plus engineer 👍 70+ satisfied customers Focusing on React, I deliver high-performance front-end applications and full-stack solutions, leveraging my skills in API integration, automation, and mobile development. Whether creating dynamic web applications or building mobile apps, I provide efficient and scalable solutions. I am proficient in a wide array of technologies, including: 🚀 Key Skills: ⚛️ React, React Native, Redux, JavaScript, Node.js, API Integration 🌐 Full-Stack Development, Web Development, API Integration 🛠️ MongoDB, Express.js, AngularJS, Web3.js, PHP, WordPress 📱 Mobile Development (iOS, Android, Flutter), Firebase, Automation 💻 TypeScript, CSS, HTML, PHP, AI App Development 🤖 Google Chrome Extensions, Hybrid App Development ☁️ Microsoft SQL Server, Microsoft Graph API, Python 📈 SEO, GitHub, ChatGPT API Integration Keywords: Mobile App Development, Android, Android App Development, Dart, Expo.io, Firebase, Firetime Realtime Database, Flutter, FlutterFlow, Hybrid App Development, In-app Purchases, iOS, iOS Development, Java, Kotlin, Native App Development, Push Notifications, React Native, Swift, User Authentication, UX Design. Web Development: React, React.js, Redux, TypeScript, UI/UX Design, AngularJS, API, CSS, Debugging, Express.js, Firebase, GitHub, Google Cloud Platforms, HTML, JavaScript, PHP, PostgreSQL, Web Development, WordPress. Full-Stack Development: API Development, Backend, CSS, Dart, Express.js, Full-stack Development, MongoDB, Node.js, PHP, Push Notifications, Redux, Vuex. AI Development: AI App Development, AI Model Integration, AI Text-to-Speech, ChatGPT API Integration, Machine Learning. I thrive in agile environments, delivering high-quality results and collaborating effectively with cross-functional teams. My deep knowledge of React and full-stack technologies allows me to create solutions tailored to your business needs. If you're looking for a reliable, detail-oriented developer, I'm your go-to expert. 🌟 Check out my portfolio, work history, and client reviews to see my reliability! When you're ready, just send me an invite, and I’ll be happy to help you bring your dream app to life—one that not only generates revenue but is also something you’ll be proud of! 🚀💼

API Integration
Java
Flutter
API
Front-End Development
Back-End Development
Mobile App Development
React Native
Artificial Intelligence
JavaScript
React
MongoDB
Web Development
Full-Stack Development
Node.js
$87 hourly
Adrian M.
- 5.0/5
- (6 jobs)
🤖 I Turn 40-Hour Work Weeks into 4-Hour Systems My automation systems and proven results: ✅ Saved SMM Agency $35.5K monthly (3 fewer employees needed) - tools = Go High Level, Make and Clio ✅ I've eliminated human error in email marketing automation for a CRO agency that saved them $3.1K monthly ✅ I've built $13.2K/month Amazon KDP publishing system (and SOLD) ✅ I've built systems for real estate developers to generate, organize and analyze leads and projects worth over $8.5m ✅ I've built systems for flippers to keep track of renovations and project management to save $17.4K on each deal - I made automations that have saved my SMM clients over 5488 hours of manual work in the past year alone. - I have +13,000 hours experience in building and mastering automations - 60+ successful automation projects delivered 🛠️ My usefull tools for your projects: * Make.com expert (built 50+ complex workflows), Also Zapier and Power automate if needed * AI: Advanced Chat GPT & Claude AI * Custom Javascript and RegEx * CRMs: Monday.com, HubSpot. Notion, Salesforce, ClickUp ntegrations: Shopify, Pipedrive, Airtable, Google Sheets, Chat GPT, Hubspot, Monday, Clio clickup, zapier, gmail, YT, Instantly… 💼 My systems for your projects : - process automation and No Code Automation - complex integrations with APIs/webhooks - building dynamic pages using Bubble.io, Softr and Stacker - setting up CRMs + API integrations - use of JavaScript for Airtable and Zapier customization - troubleshooting, repairing, and updating existing software - Sales Funnel Building, GoHighLevel (GHL) Setup & Automation 💪 How I Ensure Your Success: * Weekly feedback calls to calibrate automation to your needs * Clear communication & documentation (your future self will thank you for this) * Complete transparency about timelines and deliverables Client Testimonials: ⭐ "Adrian truly understands marketing. His ability to intuitively grasp the client's needs and deliver value is unparalleled." – Winston C., CEO ⭐ "Adrian is both creative and pragmatic. His work is always on time, within budget, and delivers the results we needed. A true servant leader." – Patrick D., CEO 🔒 LIMIT: 5 clients / month. This way I ensure that I create the highest value for my clients and evolve my clients business into a well-oiled machine. 📞 Drowning in bottlenecks? Let's find your efficiency gaps and slash time and $ costs through automation. Quick call to see how.

API Integration
ChatGPT
Zapier
Automated Workflow
Spreadsheet Automation
Email Automation
Business Process Automation
Claude 3.5 Sonnet
Lead Management Automation
Social Media Marketing Automation
Google Sheets Automation
ClickUp
Airtable
Make.com
$40 hourly
Christopher J.
- 5.0/5
- (11 jobs)
I`m a backend developer and an Azure DevOps engineer, mainly I use C# in my daily job, but in my spare time I am involved in reverse engineering/security research tasks. I love participating in CTF challenges, this includes C++ / python / js scripts. I successfully passed Microsoft Certified: Azure Developer and Microsoft Certified: DevOps Engineer Expert exams Personally, I don't do many frontend jobs, besides WPF / Xamarin forms or maintaining simple web dashboards, but I used to be Systems Integrator so I will be able to handle almost any challenge.

API Integration
.NET Framework
Java
C++
C#
Computer Network
Mobile App Development
Ethical Hacking
Microsoft Azure
Reverse Engineering
JSON
JavaScript
Python
Data Scraping
Microsoft Windows PowerShell
$32 hourly
Roman V.
- 5.0/5
- (4 jobs)
I am a skilled full-stack developer with experience in Web development👨‍💻 - Strong knowledge of HTML, CSS - Expert in JavaScript and Typescript - Proficient in using React.js for frontend development - Have experience in developing AI projects - Familiar with REST API architecture - Backend development using Node.js, Express.js, Nest.js, Next.js - Experience with databases: MongoDB, SQL I'm a reliable, responsible and hard-working developer interested in personal professional growth and broadening my technical expertise. I enjoy working in a team on large scale projects and solving a wide variety of tasks related to the development of web applications. I represent Dektry Agency ☄️ Why working with us? 📎 Individual Approach 📎 6+ years on the market 📎 High-quality and clean code 📎 Well-coordinated team of professionals 📎 Ongoing Support Looking for expert developers? Let's work together! 🚀 Highlighted skills: Web development, Mobile development, Application Development, JavaScript (JS), Front-end Development, Back-end Development, React (ReactJS, React.js), React Native (ReactNative), React-Bootstrap, Node.js (Node, NodeJS), Express (Express.js, ExpressJS), TypeScript (TypeScript), Electron, MongoDB, Mongoose, SASS, Git, CSS, Geth, JS Stellar SDK, TensorFlow (JS), Pytorch, Flask, Tornado, Tesseract, Styled-components.

API Integration
Python
Firebase
HTML
MongoDB
NestJS
Sails.js
Node.js
React Native
TypeScript
Redux
PostgreSQL
JavaScript
HTML5
CSS 3
$38 hourly
Roman P.
- 5.0/5
- (4 jobs)
⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 I'm a highly focused and motivated Mobile Team Lead developer at Itexus. Organized, methodical and a keen eye for detail results in solid coding and trustworthy mobile apps. Transforming client requirements into great apps based on a clear and quality code are core values in achieving long-lasting relationships. I have 7+ years of experience in mobile development using Android, Kotlin, Java, and iOS, Swift, Objective-C, Flutter. Technologies & Tools Kotlin | Java | Android | Swift | iOS | Dart | Flutter | KMM | KMP| Kotlin MutliPlatform | JavaScript | HTML | CSS | React Native | ReactNative | Native Mobile Development | Dagger 2 | Koin | GetIt | MobX | ReactiveX | Kotlin’s flow | Coroutines | Cicerone | Navigation Component | Realm | Room | Retrofit | OkHttp | Moshi | Scarlet | Apollo | Dio | Compose | ViewBinding | Splash Screen API (animated) | MPAndroidChart | RiverPod | Freezed | Groovy | Kotlin DSL Our Expertise at a Glance • Mobile App Development: Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, Flutter, and more. • Website and Full Stack Development: Crafting seamless back-end experiences with .Net, Python, Java, Javascript, React.js, Angular.js, Node.js, MERN, MongoDB, PHP, etc. • Logo & UI/UX Design: Bringing your ideas to life with Adobe XD, Photoshop, Sketch, Figma, etc. • End-to-End Solutions: From logo design, UI/UX development, workflow setup, testing to deployment in app stores, we've got it all covered. Why Choose Itexus? • Customized Approach: We tailor our services to fit your needs and budget. • Agile Workflow: Regular updates, milestones, or scrum sprints keep you in the loop. • Quality Assurance: Our meticulous testing process ensures that every project we undertake meets the highest standards of quality and functionality. • Competitive Price Assurance: We provide top-quality services at competitive prices to offer you the best value for your investment. • Guaranteed Success: We work tirelessly to exceed your expectations. Industries We Cover Healthcare, Transport, Retail, Asset Management, Wealth Management, Real Estate, Dating, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Non-Profit, Sports and Fitness, Travel and Tourism, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Aircraft, Business Innovations, Human Resources, LegalTech, Lifestyle, Marketing, Education, E-learning, Insurance, IoT, E-commerce, Enterprise. Highlighted Skills Swift, iOS, Android, Kotlin, Java, IOS, Native programming Language | Project Planning | MVC Architecture and RESTful APIs | Front-end Technologies | React | HTML5 | CSS3 | JavaScript | Responsive and Mobile-first Design | Database Design and Implementation | MongoDB | Firebase | User Authentication | Integration of Third-party APIs | Deployment to Cloud Platforms | AWS | Test-driven Development | Agile Methodology | Scrum | Kanban | Security Technologies | QR Code Scanner | GPS and Mapping | Blockchain | NFT | Artificial Intelligence | E-commerce Solutions | Chatbots | Version Control Systems | Git | GitHub | Project Management and Collaboration Tools | ClickUp | Jira | Trello | Documentation and Code Commenting | SEO and Maintenance | MVP SAAS | Rebuild | Prototype | Start-Up | High-Friendly Custom Development | Transform | Solution | Ensure | Create | Enhance | Implement | Great Problem-solving | Excellent Communication | Assist | Collaborate | Mobile App Development | Web App Development | User Interface Design | Payment Integration | Stripe | Payment Gateway | ERP | CRM | User-friendly Interface | Mobile App Development | Mobile App Developer | Flutter App | Flutter Developer | Flutter Firebase | Flutter Dart | Flutter App Developer | App Developer | Mobile Developer | React Native | React Native Mobile App Development | Mobile App Builder | Flutter App Developer | Flutter Laravel | Mobile App Development | Mobile App Developer | Flutter App | Flutter Developer | Flutter Firebase Business with 1000+ Employees | Business with 10-99 Employees | Business with 100-999 Employees | Business with 1-9 Employees | Apple HealthKit | AI Marketplace | Waste Management & Remediation | AI App Development | Healthcare | Android App | Audio Conversion | ChatGPT API | Dating & Social Life | NFT Marketplace | Ecommerce Website Development | AI Speech-to-Text | Email Campaign Setup | API | Startup Company | Artificial Intelligence | Health Coaching | Health | Maintenance Management Talent Good Knowledge, Talented, Experienced, Skilled, Strong Experience, Proven Experience, Agency, Team, Company, Specialist, Proven Track Record, Strong Background, Write Clean Code, Deep Expertise, Bring to Life, Cross-platform, Attention to Detail, Long Term. ⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤

API Integration
RESTful API
API
Blockchain
Android SDK
Flutter
Kotlin
C++
Swift
Firebase
Android
Android App Development
iOS
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