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Most AI agents fall apart when they hit real business logic. Mine don't. As a Senior AI Developer and AI Engineer, I build autonomous systems that cut manual workflows by up to 85% — the kind your team will wonder how they ever lived without.
📩 Send your brief — I'll reply within 2 hours with a concrete action plan.
🏆 Why work with me?
🥇 Senior AI Developer and OpenAI developer with a track record of production-ready systems.
🥇 Expert AI Agent architect, agentic AI developer, and AI agent saas specialist delivering 10x ROI across SaaS, E-commerce, and Fintech.
🥇 Top-Rated AI Chatbot Developer — OpenAI developer, Bolt AI Developer, chatbot developer, and GPT-4 expert.
🥇 AI voice chatbot and AI voice assistant builder — AI voice VAPI, AI phone agent, and AI call agent systems that work 24/7.
❇️ Custom AI Agent & Autonomous Systems
As a dedicated AI Developer, I build robust business logic — not wrappers. My AI Agent architecture relies on LangChain, LangGraph, and CrewAI. As an AI Developer with LangChain and Zapier expertise, I connect AI agent automation workflows to Slack, Shopify, and enterprise backends. Every AI Agent doubles as a 24/7 AI sales agent. As a Bolt AI Developer and AI web developer, I ship AI agent saas systems with front-end developer AI interfaces. As an OpenAI developer and generative AI agent specialist, the OpenAI API, GPT-4, and ChatGPT sit at the core of every AI Agent build. My AI agent python and AI agent n8n experience covers every layer of the automation stack.
❇️ AI Voice Chatbot, AI Phone Agent & AI Call Agent
As an AI voice chatbot and AI voice assistant specialist, I build AI voice VAPI systems, AI phone agent flows, and AI call agent pipelines for sales, support, and AI agent real estate. My AI voice chatbot covers AI voice clone, AI voice chat, AI voice call, and WhatsApp AI chatbot channels. My AI agent real estate deployments use AI phone agent flows to qualify leads 24/7.
❇️ AI Chatbot Developer & Chatbot Development
As an AI Chatbot Developer, I build bots for WhatsApp, Telegram, and Web. My chatbot development covers Botpress, Voiceflow, ManyChat, and custom Python backends — GPT chatbot, OpenAI chatbot, and Telegram chatbot solutions. As a chatbot developer and AI bot developer, I integrate GPT-4, ChatGPT, and LLM backends. My AI ml developer and AI software developer background ensures every chatbot development is production-ready.
❇️ LLM Engineering, AI Agent RAG & Advanced RAG
As a senior AI LLM Developer, I eliminate hallucinations for enterprise. My AI agent rag and advanced RAG pipelines rely on Pinecone, Weaviate, and Milvus. As a Generative AI Developer, I handle LLM prompt engineering for OpenAI, Anthropic, and Llama. Medical documentation agent AI RAG is a specialist engagement for healthcare clients.
❇️ AI Agent for Sales, CRM & Digital Marketing Automation
As an AI Agent architect and AI Backend Developer, I build AI sales agent and business development automation covering HubSpot marketing automation, Zoho marketing automation, digital marketing automation, YouTube automation, and social media marketing automation via API integration Python. My AI agent real estate and AI agent marketing work covers full-funnel automation pipelines.
❇️ Machine Learning, AI Deep Learning & Data Science
As a machine learning expert, AI deep learning specialist, and data scientist, I build computer vision models using PyTorch and TensorFlow. My work covers Python data analysis, AI data analytics, Python web scraping, and AI classifier builds. As a Python full stack developer and AI app developer, I handle API integration Python, analytics engines, and AI model training.
🛠️ Tech Stack
AI Developer / Python developer / Python full stack developer: Python, FastAPI, Docker, AWS.
AI voice developer / AI video developer: ElevenLabs, AI voice VAPI, AI-generated voice-over.
AI software developer / AI bot developer / AI ml developer: AI app development, AI builder.
Data Scientist: AI data analytics, ML model evaluation, Python web scraping.
❇️ AI SaaS & Full Stack AI
As a Full Stack AI SaaS Developer, I build web application development platforms. As a Bubble Developer AI and iOS Developer AI, I cover no-code and mobile AI. As an AI web developer and Bolt AI Developer, I bring speed and depth to every AI SaaS engagement.
🌐 Enterprise · Startup · Deep Tech
For Enterprises: Lead AI Developer and machine learning consultant — multi-agent systems for 500k+ users, AI agent real estate pipelines, and AI voice chatbot for enterprise sales.
For Startups: AI Chatbot Developer, Python full stack developer, and AI web developer shipping AI Agent, AI phone agent, and AI chatbot fast.
For Deep Tech: AI deep learning, AI agent rag, and medical documentation agent AI RAG — every data scientist insight made actionable.
👉 Send me your brief — I'll reply within 2 hours with a free AI strategy session.
Last Update: 03/07/2026
Andrii N.
has worked
.
Associated with
Aimeice Tech.
$40/hr
100%
Job Success
$30K+ earned
Available now
Start of list.
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Businesses don't need more software—they need better Automation. As an Automation Engineer, I help companies eliminate repetitive work, streamline operations, and build intelligent AI Automation systems that scale with their business.
My expertise includes Automation, AI Automation, n8n, Zapier, and GHL Automation, helping startups and enterprise companies automate sales, marketing, operations, customer support, reporting, CRM, ERP, ecommerce, finance, logistics, and internal business workflows.
As an Automation Engineer, I design production-ready automation ecosystems using n8n, Zapier, Make (formerly Integromat), GoHighLevel, GHL, APIs, webhooks, Python, AI Developer workflows, and machine learning integrations. Every Automation is designed to reduce manual work, improve operational efficiency, eliminate bottlenecks, and create measurable business value.
My commercial experience includes AI Automation, CRM Automation, ERP Automation, document processing, AI lead generation, customer onboarding, workflow orchestration, approval workflows, reporting automation, ecommerce automation, procurement automation, logistics automation, healthcare automation, AI-powered business assistants, and enterprise workflow automation.
Whether clients need n8n workflows, Zapier integrations, GHL Automation, GoHighLevel Setup, Go High Level CRM optimization, or enterprise Automation, I focus on building reliable systems that connect business applications into one intelligent ecosystem.
I regularly integrate Automation platforms with HubSpot, Salesforce, Airtable, Monday, Slack, Gmail, Google Workspace, Shopify, QuickBooks, Stripe, Twilio, Notion, OpenAI, CRMs, ERPs, payment providers, cloud platforms, and third-party REST APIs.
AI Automation has become one of the fastest ways to increase productivity. As an AI Developer, I combine Automation with machine learning, AI agents, GPT-powered assistants, intelligent document processing, OCR, Retrieval-Augmented Generation (RAG), and conversational AI to automate complex decision-making, customer support, internal operations, and knowledge management.
My Automation solutions support marketing automation, sales automation, customer lifecycle automation, AI lead generation, social media marketing automation, pipeline automation, lead qualification, reporting automation, notification systems, inventory synchronization, document approvals, customer onboarding, and business intelligence.
I also build advanced n8n workflows capable of orchestrating dozens of connected services across multiple departments. From simple Zapier automations to enterprise-scale AI Automation platforms, every workflow is designed for scalability, reliability, monitoring, and long-term maintainability.
GoHighLevel has become a powerful platform for growing businesses. My experience includes GoHighLevel Setup, GoHighLevel Automation, Go High Level CRM optimization, GHL workflow automation, lead nurturing, marketing automation, appointment booking, email sequences, SMS automation, sales funnels, and customer communication.
As an Automation Engineer, I work closely with business owners to identify repetitive processes that can be automated through AI Automation, n8n, Zapier, Python, machine learning, APIs, and cloud services. The goal is not simply to automate tasks, but to redesign business operations around intelligent automation that saves hundreds of hours every month.
✔ 100+ successful projects delivered
✔ $100K+ earned on Upwork
✔ 8+ years average engineering experience
✔ 30+ SaaS & enterprise platforms delivered
If you're looking for an Automation Engineer with deep experience in Automation, AI Automation, n8n, Zapier, GHL Automation, GoHighLevel Setup, marketing automation, AI lead generation, social media marketing automation, Python integrations, and enterprise workflow automation, I'd be happy to discuss how intelligent automation can transform your business.
Associated with
Krasty Soft
$100K+
earned
$35/hr
100%
Job Success
$700K+ earned
Available now
Offers consultations
Start of list.
End of list.
⭐100% Delivery Rate and an expert-vetted agency with 25,000+ hours.
🔥 "Working with Vigen was a pleasure. It was a 𝐫𝐞𝐥𝐢𝐞𝐟 𝐭𝐨 𝐡𝐚𝐯𝐞 𝐬𝐮𝐜𝐡 𝐚 𝐬𝐦𝐨𝐨𝐭𝐡 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
after working with others from Upwork. I highly recommend working with them for any software development needs.
𝐃𝐨 𝐲𝐨𝐮 𝐡𝐚𝐯𝐞 𝐩𝐞𝐚𝐜𝐞 𝐨𝐟 𝐦𝐢𝐧𝐝 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮𝐫 𝐝𝐞𝐯𝐬?
Finding a reliable dev is tricky. I've not only worked as a senior web developer but have also managed dev throughout my career, giving me an understanding of the client's perspective.
I've partnered with clients long-term, not only supporting website maintenance and improvements but also planning major projects together.
As a dev, I make sure:
✔️ You won’t need to worry about code quality - external audits will show best practices.
✔️No need for double-checking QA.
✔️You can count on me as a partner for advice on any tech-related aspects.
With 10 years of experience in Full Stack Development, CMS Development, and Web Design, I specialize in Laravel, PHP, WordPress, React, Vue, Next.js, and SaaS platform development.
My Expertise:
🟩 WordPress Development – Custom WordPress themes, plugin development, WooCommerce stores, and Headless WordPress.
🟩 Laravel Full Stack Development – Building modern Laravel sites, SaaS platforms, and PHP applications.
🟩 API Platform & API Integration – Developing and integrating REST API, GraphQL, and third-party APIs.
🟩 Software & Platform Development – Creating scalable B2B, B2C, AI-driven, and enterprise applications.
🟩 Back-end Development – Expert in LAMP architecture, database management, and server-side logic.
🟩 Performance Optimization – WordPress & Laravel Core Web Vitals optimization, website speed, and performance enhancements.
Technologies I Work With:
🟩 Back-End: PHP, Laravel, October CMS, API Development
🟩 Front-End: React.js, Vue.js, Next.js, Nuxt.js, JavaScript, jQuery, Bootstrap
🟩 CMS & E-Commerce: WordPress, WooCommerce, Elementor, ACF, Divi, BricksBuilder, BuddyPress
🟩 Database & Server Management: MySQL, PostgreSQL, Docker, Cloud Hosting
🟩 Version Control & DevOps: GitHub, GitLab
🟩 UI/UX & Design: Figma, Sketch, Adobe XD
Services I Offer:
✅ Custom WordPress & Laravel Development
✅ SaaS Project Development & Platform Development
✅ WordPress Optimization, Core Web Vitals, and Performance Tuning
✅ Laravel Website, API Platform, API Integration
✅ WooCommerce Development & Custom E-Commerce Solutions
✅ PHP Web Application Development & PHP Script Customization
✅ Website Redesign, Maintenance, and Support
Whether you need a Senior Laravel Developer for a SaaS project, a PHP Developer for a custom PHP website, or a WordPress Developer for a high-performance WooCommerce store, feel free to write me here on Upwork.
Vihen S.
has worked
.
Associated with
Yelk Software OU
$1M+
earned
$100/hr
100%
Job Success
$300K+ earned
Available now
Offers consultations
Start of list.
End of list.
Design and deploy AI pipelines that transform image, video, and audio data into reliable real-world applications, from computer vision analytics and 3D perception to audio (speech, music, sound) analysis and generative AI systems.
My work focuses on production AI systems, not research prototypes. I help companies move from early feasibility studies and PoC development to scalable deployments running in real environments.
Typical projects include:
• computer vision pipelines for detection, tracking, and segmentation
• real-time video analytics and edge AI deployments
• 3D vision and spatial perception systems
• speech processing and audio AI solutions
• generative AI pipelines for image, video, and audio
Computer Vision Systems
Design and development of advanced computer vision pipelines for image and video analysis.
Typical solutions include:
• object detection and multi-object tracking
• semantic and instance segmentation
• pose estimation and motion analysis
• OCR and document understanding
• visual search and recognition systems
These systems are used in industries such as manufacturing, sports analytics, retail, healthcare, and security.
3D Vision & Spatial AI
Development of AI systems that understand spatial structure and depth.
Experience includes:
• structure-from-motion (SfM)
• photogrammetry pipelines
• depth estimation models
• NeRF and neural rendering
• point cloud processing and 3D reconstruction
Applications include robotics, AR/VR, construction analytics, and digital twins.
Edge AI & On-Device ML
I specialize in deploying ML models on mobile and embedded devices where latency, memory, and power constraints are critical.
Typical optimization techniques include:
• model quantization and pruning
• architecture optimization
• real-time inference pipelines
• deployment on mobile and embedded hardware
Technologies include:
TensorRT, TensorFlow Lite, CoreML, ONNX Runtime.
Many deployed systems operate with 50–100 ms inference latency depending on hardware.
Generative AI for Vision & Video
Development of generative pipelines for media processing and synthetic data generation.
Typical solutions include:
• image and video generation pipelines
• diffusion-based editing and enhancement
• synthetic dataset generation for model training
These tools help accelerate AI training and improve model robustness.
Audio & Speech AI
Development of AI systems for speech processing, audio analysis, and voice technologies.
Examples include:
• phoneme segmentation and pronunciation analysis
• speech recognition pipelines
• voice feature extraction and audio analytics
• generative audio and music models
These systems are used in:
• language learning platforms
• speech therapy tools
• voice biometrics systems
• music AI applications
Technical Stack
Frameworks & Models
PyTorch, TensorFlow, OpenCV, Detectron2, MediaPipe, YOLO, DINO, SAM, CLIP
Deployment
TensorRT, TensorFlow Lite, CoreML, Docker, ONNX Runtime, FastAPI
Programming
Python, C, C++
3D Vision
NeRF, SLAM, Dust3r, point clouds
Leadership & R&D
I lead an R&D-focused AI team at It-Jim, an AI consulting company with 30+ engineers and 10+ PhDs specializing in:
• Computer Vision
• Generative AI
• Audio & Speech AI
• Edge AI systems
We help companies solve technically challenging AI problems and build reliable production systems.
If you are looking for experienced AI engineers to design, prototype, or deploy advanced machine learning solutions: feel free to reach out!
Ievgen G.
has worked
.
Associated with
It-Jim
$200K+
earned
$50/hr
100%
Job Success
$800K+ earned
Available now
Offers consultations
Start of list.
End of list.
I’m a UI UX Designer with 10+ years of experience in UI UX Design and Product Design, helping startups, SaaS companies, and enterprise teams build intuitive, scalable, and high-performing digital products.
Specializing in SaaS UX, dashboard design, mobile app design, web design, and AI-native products, I combine strategic UX thinking with modern UI systems to create experiences that drive engagement, retention, and business growth.
I’ve delivered 320+ UI UX Design projects, created 6,000+ wireframes, and built 250+ prototypes for products used by millions of users worldwide. My clients include Blizzard, Apollo, and Forbes-featured companies.
As a UI UX Designer and Figma expert, I focus on transforming complex workflows into clean, developer-friendly interfaces through UX Research, design systems, prototyping, and AI-powered product design workflows.
As a UI UX Designer, I create user-centered experiences that improve usability, simplify complex workflows, and drive measurable business growth. My UI UX strategies have helped clients increase onboarding completion, boost retention, reduce support tickets, and improve conversions by up to 150%.
I combine UX strategy, UI UX Design, UX Research, and AI-powered prototyping workflows to move products from concept to validated MVP significantly faster without sacrificing quality.
Why should you hire me as a UI UX Designer?
✔️ 10+ years as a UI UX Designer for SaaS, AI, FinTech, Healthcare, Logistics, Education, and B2B products
✔️ 320+ UI UX Design projects with measurable business impact
✔️ 63,000+ hours in UI UX Design, UX Research, wireframing, prototyping, and UI UX Figma workflows
✔️ Expert UX UI Designer specializing in dashboards, enterprise systems, CRM design, and SaaS UX
✔️ 6,000+ wireframes and 250+ interactive prototypes built in Figma
✔️ AI-powered UI UX Design workflows using Cursor, Claude, V0, and Figma Make
✔️ Design systems, component libraries, and scalable UI frameworks for development teams
✔️ Strong collaboration with product managers, founders, engineers, and growth teams
✔️ 100% Job Success and Top Rated Plus on Upwork
📊 Proven UI UX Design Impact
♦ 135% NPS increase — Lykon (150,000+ users)
♦ $33M Series A raised — G2 Awards 2025 product
♦ $5.1M funding secured after redesign — Sitenna (UX Design Awards 2024)
♦ 75% faster onboarding and 25% ARPU growth — Wellness Platform
♦ Reports reduced from 2 hours to 10 minutes — Factually Health
♦ 50% fewer support tickets through UX redesign
♦ Retention improved from 35% → 50% with optimized onboarding UX
🚀 UI UX Design Services
🎯 SaaS UI UX Design and Product Design
🔹 SaaS dashboard design and enterprise UX
🔹 CRM systems, analytics platforms, and admin panels
🔹 UX architecture for complex B2B workflows
🔹 Product strategy, user flows, and scalable UI systems
🔹 AI-native SaaS UX for copilots, agents, and conversational interfaces
📱 Mobile App Design & Web Design
🔹 Mobile app design for iOS and Android
🔹 Responsive web design and SaaS interfaces
🔹 High-fidelity UI UX Design in Figma
🔹 Design systems and developer-ready UI components
🔹 UX optimization for onboarding, engagement, and retention
🔍 UX Research & UX Strategy
🔹 UX audits and usability analysis
🔹 User journey mapping and behavioral analysis
🔹 Information architecture and wireframing
🔹 Conversion optimization and onboarding improvements
🔹 Data-driven UX decisions using analytics and user insights
⚡ AI-Powered Product Design Workflows
🔹 Rapid prototyping with Cursor, Claude, V0, and Figma Make
🔹 Clickable MVPs in days instead of months
🔹 AI-assisted UX workflows and interface generation
🔹 UX systems for AI products and automation platforms
🛠 Tools & Technologies
Figma · FigJam · Cursor · Claude · V0 · Lovable · React · Next.js · Tailwind CSS · Storybook · Chromatic · Jira · Notion · Convex
⭐️ What Clients Say
“For over three years, the Cieden team has been a reliable partner in our global environment, consistently helping us move the needle on key initiatives.”
— Senior Manager at Apollo
“The new design contributed to a significant increase in conversions. The team is creative, helpful, and highly motivated.”
— Founder of el Grocer
“They have a great sense of UX. They understand both the business requirements and the creative vision behind the product.”
— VP Engineering at BeBop Technology
If you’re looking for a UI UX Designer, UX UI Designer, Senior UI UX Designer, Product Designer, Figma Expert, SaaS Designer, Dashboard Designer, Mobile App Designer, Web Designer, Healthcare Designer or UX Research specialist who can improve conversions, simplify workflows, and create scalable user experiences – Let’s connect! ☎️
I’ll reply within 2 hours with actionable UX feedback.
Anastasiya M.
has worked
.
Associated with
Cieden: strategic UI UX design services for complex B2B SaaS platforms
$2M+
earned
$40/hr
100%
Job Success
$10K+ earned
Available now
Start of list.
End of list.
We build and manage scalable iGaming platforms for operators and startups.
OmiSoft is a dedicated iGaming development team. We work with early-stage iGaming products and established gambling operators - delivering casino platforms, sportsbooks, and online gambling systems that perform under real traffic.
What we build:
🎰 iGaming platforms (B2B & B2C)
- Casino and sportsbook platform development
- Turnkey iGaming solutions and white-label gambling platforms
- Custom iGaming development from architecture to launch
- Game provider integrations and in-house iGaming game development
- PAM, CRM, bonus, and affiliate systems for gambling platforms
🏆 Sports betting & lottery
- Sportsbook and sports betting platform development
- Lottery, fantasy sports, and skill-game iGaming systems
- Real-time odds feeds and betting engine integrations
📲 Telegram & mobile iGaming
- Telegram gambling products and betting mini-apps
- Mobile-first iGaming platforms for web and app
🔗 Blockchain for iGaming
- Token mechanics and crypto payments for gambling platforms
- Ethereum and Solana integrations for iGaming products
✅ Why iGaming teams work with us:
- Dedicated iGaming development - not a generalist agency
- Full ownership from iGaming product scope to delivery
- Experience across regulated, white-label, and crypto iGaming markets
- High-load architecture built for real gambling traffic
- Transparent process, reliable delivery, long-term support
We've helped iGaming operators launch, scale, and grow their platforms. Whether you need a turnkey iGaming solution or a custom-built gambling platform - let's talk.
📩 Got an iGaming project? Tell us what you're building - we'll come back with a plan within the hour.
Associated with
OmiSoft 🏆 Multi-awarded AI & Web3 Agency
$100K+
earned
$50/hr
100%
Job Success
$70K+ earned
Start of list.
End of list.
Hi, I’m a Java Developer with extensive experience in software development, specializing in backend, and full-stack solutions. I build high-performance, scalable applications using Java, Spring Boot, and modern web technologies. My expertise covers RESTful API design, microservices architecture, and cloud-based solutions with Amazon Web Services (AWS) and Docker.
✔ Core Skills & Technologies:
I leverage a versatile tech stack to build scalable, secure, and high-performance applications, ensuring reliability and efficiency.
🟢 Programming Languages: Java, JavaScript, TypeScript, Python, PHP – Used to develop 20+ enterprise applications, handling thousands of daily users.
🟢 Frameworks & Libraries: Java Spring Boot, Spring Framework, Hibernate, React, Angular, jQuery – Optimized system performance, improving response times by 25%.
🟢 Database Management: MySQL, SQL, MongoDB – Designed and maintained databases processing over 1M+ transactions monthly.
🟢 Web & Application Development: Web Development, Java Development, Desktop Applications, Standalone Applications, WordPress – Delivered 50+ projects, enhancing client operations and user engagement.
🟢 DevOps & Deployment: Docker, Apache Tomcat, Git – Streamlined CI/CD pipelines, reducing deployment time by 30%.
🟢 Software Engineering: Software Architecture & Design, Software Development, Software Debugging – As a Java Developer I developed scalable solutions supporting 50K+ active users.
🟢 UI/UX: HTML CSS JavaScript, HTML5, CSS3 – Created responsive interfaces that increased user engagement by 20%.
🟢 Testing & Quality Assurance: JUnit, Software Testing – Reduced production issues by 40% through automated and manual testing.
✔ What I Build as a Java Developer
My expertise spans across developing:
🟢 Backend Systems: Scalable microservices architectures, high-performance enterprise applications, developed by a Java Developer
🟢 Web Development: Secure full-stack solutions with Spring Boot, JavaScript, HTML, CSS
🟢 API Development & Integrations: RESTful API, GraphQL, third-party API integrations
🟢 SaaS Platforms: Cloud-powered software development with AWS, Docker, and Kubernetes
🟢 Custom CRM & ERP Solutions: Optimized for business process automation
🟢 DevOps & Infrastructure: CI/CD pipelines, cloud deployment, serverless solutions
✔ Industries I Work With
My solutions empower businesses in diverse industries:
🟢 EdTech & E-Learning: LMS platforms, interactive e-learning solutions
🟢 HealthTech & Medical: Secure healthcare applications, compliance-driven systems
🟢 E-commerce & Retail: Payment integrations, inventory management solutions
🟢 FinTech & Banking: Secure financial applications, transaction processing
🟢 SaaS & Enterprise Software: B2B platforms, cloud-based solutions
🟢 HRTech & Recruitment: Custom HR systems, workforce analytics
🟢 Manufacturing & Logistics: ERP integrations, supply chain management
🟢 Travel & Booking: Reservation systems, customer portals
✔ Development Approach & Work Style
🟢 Problem-Solving Mindset: Writing clean, maintainable, and well-documented code for scalability
🟢 Client-Centric Approach: Aligning technology solutions with business goals
🟢 Agile Software Development: Iterative development, CI/CD pipelines, continuous integration
🟢 Performance & Security Focused: Optimized queries, security best practices
✔ Leadership & Client Impact:
🟢 Led teams of 5+ Java developers to implement scalable Java solutions for clients worldwide( from India to the US).
🟢 As a Java Developer, I developed Java-based platforms contributing to a significant increase in client revenue.
🟢 Consistently received 4.9/5 ratings, reflecting dedication to quality and client success.
If you're looking for an experienced Java Developer, Senior Java Developer, Full Stack Developer, Java Spring developer, Javascript Developer, Python Developer, Java developer India to build scalable, high-performance applications, let’s connect!🚀
$40/hr
100%
Job Success
$60K+ earned
Available now
Start of list.
End of list.
📣 Hello, and welcome!
I'm a Senior Software developer with 6 years of commercial experience in Java, Springboot, React, Next.js, React Native, Node.js, Nest.js, and Express.js. I'm oriented on results, motivated, and responsible developer with good analytical skills and attention to detail. I'm well-versed in software development, data structures, algorithms, and object-oriented design principles. I'm skilled in utilizing various tools and technologies. Quick learner. Also, I am an active team player who wants to deliver high-quality work and continue expanding my knowledge and skills in software development. I would be happy to work with E-commerce, Fintech, HealthTech, Blockchain, EdTech, PropTech, CRM, TravelTech, InsurTech, LogistecsTech, and Gambling projects.
📌WHAT I'M OFFER:
💻WEB DEVELOPMENT
I'm delivering high-performance, responsive web applications. I specialize in building modern front-end interfaces using React.js and Next.js while handling robust backend systems with Node.js, Express.js, and Nest.js. Full-stack capabilities allow me to craft seamless, end-to-end solutions, from user interfaces to database management.
💻 API DEVELOPMENT & INTEGRATION
Design and develop custom RESTful APIs and GraphQL endpoints to connect applications. I integrate third-party services like Stripe, Twilio, Google Maps API, and more, ensuring seamless communication between platforms. I also implement secure authentication and authorization systems using JWT, OAuth, or custom protocols.
💻 ENTERPRISE SOLUTIONS (JAVA)
I'm building scalable enterprise applications with Spring Boot or lightweight FastAPI solutions for startups. Develop and deploy microservices architectures, automate workflows, and integrate powerful tools like Kafka and RabbitMQ for real-time processing.
💻 REAL-TIME & eCommerce SOLUTIONS
I'm developing real-time applications such as chat apps, live notifications, and streaming platforms using WebSockets. Build custom eCommerce platforms with payment integrations like Stripe, PayPal, and others, providing features like cart management, inventory tracking, and order processing.
💻 CLOUD & DevOps
I'm deploying and managing scalable applications on cloud platforms like AWS, Google Cloud, Azure, Heroku, and Vercel. I handle CI/CD pipelines for automated testing and deployment, leveraging Docker and Kubernetes for containerized environments.
💻 DATA-DRIVEN APPLICATIONS
I'm creating interactive data dashboards using React tools. I automate data pipelines and web scraping tasks with pandas, NumPy, Scrapy, and Selenium. I also integrate machine learning models into applications for advanced analytics and predictions.
📌 My Javascript Front-end skills:
Javascript, Typescript, React.js, Next.js, React Native (CLI/Expo), TailwindCSS, Material UI, Ant Design, SCSS, HTML5, CSS3, Redux Thunk, Redux Saga, Chakra UI, Bootstrap.
📌 My Javascript Back-end skills:
Node.js, Nest.js, Express.js, Jest, Fastify, GraphQL, Docker.
📌 My Java skills:
Java21, Spring (Boot, Core, MVC, Security, Data, Cloud, Javamail), Concurrency, SOLID, OOP, JakartaEE, JSP, Tomcat, Thymeleaf, JUnit, Mockito, Maven, Gradle. Docker, Lombok
📌 My Database skills:
Hibernate, JDBC, Liquibase, SQL, NoSQL, PostgreSQL, MySQL, Objection, Knex, Prisma, MongoDB.
📌Other skills: Stripe, Firebase, Mapbox, GoogleMap, Google Analytics, Google Cloud, KuCoin API, OAuth2, WordPress, AWS.
📌API Tools: Swagger, Postman
📌KEYWORDS: JavaScript, Firebase, Vue.js, Angular, Svelte, D3.js, Chart.js, Three.js, PostgreSQL, React.js, Python, Spring Boot, Docker, Redis, Google Analytics, Kubernetes, Next.js, NumPy, Tailwind CSS, Google Maps API, TensorFlow, AWS S3, JPA, Redux, Material-UI, Selenium, MongoDB, Django, Stripe, Node.js, Jupyter Notebooks, OpenCV, Vercel, Cloudflare, React Native, Celery, ElasticSearch, Hibernate, Express.js, PyTorch, Twilio, Nest.js, pandas, RabbitMQ, Spring Framework, Pipedrive, Google Cloud, GraphQL, scikit-learn, MUI, Azure Functions, Jenkins, Ansible, RESTful APIs, Heroku, Kafka, JSP, OpenAPI, FastAPI, Bitbucket, Gradle, Tomcat, SendGrid, Chakra UI, WebSockets, Java EE, Apache Spark, Servlets, Storybook, Maven, JUnit, SQLite, Scrapy, SQLAlchemy, Apache Kafka, PayPal, Azure DevOps, Microservices, Terraform, Electron.js, Webpack, Babel, ESLint, Vite, Jest, Cypress, Puppeteer, Mocha, Jasmine, Lodash, RxJS, Immutable.js.
Vitalii S.
has worked
.
$30/hr
97%
Job Success
$100K+ earned
Start of list.
End of list.
Just to be transparent - this Bio is AI-assisted, but everything in it reflects how I truly work and think.
🌟 Helping you align user experience with business growth through clear, intuitive design. I craft strategic UX/UI for 𝐁𝟐𝐁, 𝐁𝟐𝐂, 𝐒𝐚𝐚𝐒, 𝐞𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞, 𝐚𝐧𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬, now enhanced through 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐝𝐞𝐬𝐢𝐠𝐧 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬 that help teams move faster and smarter.
By combining strong UX fundamentals with tools like 𝐋𝐨𝐯𝐚𝐛𝐥𝐞, I accelerate ideation, iteration, and validation - delivering high-quality design solutions 𝐦𝐨𝐫𝐞 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭𝐥𝐲 𝐚𝐧𝐝 𝐜𝐨𝐬𝐭-𝐞𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞𝐥𝐲, without compromising clarity, usability, or visual polish.
𝐖𝐡𝐲 𝐈’𝐦 𝐘𝐨𝐮𝐫 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐆𝐮𝐢𝐝𝐞
🔹 𝐒𝐞𝐚𝐬𝐨𝐧𝐞𝐝 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 5+ years delivering pixel-precise UI/UX for web, mobile, and complex platforms
🔹 𝐀𝐈-𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐃𝐞𝐬𝐢𝐠𝐧: Leveraging Lovable.dev and AI-assisted workflows to iterate faster and reduce time-to-market
🔹 𝐆𝐥𝐨𝐛𝐚𝐥 𝐈𝐦𝐩𝐚𝐜𝐭: Trusted by clients in Finance, Entertainment, and Medical - enterprise-level finesse
🔹 𝐔𝐬𝐞𝐫-𝐅𝐢𝐫𝐬𝐭 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲: Research-driven decisions backed by testing, insight, and data
🔹 𝐂𝐥𝐢𝐞𝐧𝐭 𝐀𝐜𝐜𝐥𝐚𝐢𝐦: “Stunning designs… exceeded every expectation.”
𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐈 𝐂𝐡𝐚𝐫𝐭 𝐟𝐨𝐫 𝐘𝐨𝐮
✅ UX research, user flows & information architecture
✅ High-fidelity wireframes & interactive 𝗙𝗶𝗴𝗺𝗮 𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗲𝘀
✅ 𝗔𝗜-𝗮𝘀𝘀𝗶𝘀𝘁𝗲𝗱 𝗨𝗜 𝗰𝗼𝗻𝗰𝗲𝗽𝘁𝘀 and rapid iteration with Lovable
✅ SaaS dashboards, platforms & MVP design
✅ B2B websites & B2C landing pages
✅ Mobile app design (iOS & cross-platform)
✅ Scalable design systems & UI libraries
𝐀 𝐉𝐨𝐮𝐫𝐧𝐞𝐲 𝐭𝐨 𝐘𝐨𝐮𝐫 𝐒𝐮𝐜𝐜𝐞𝐬𝐬
𝐎𝐫𝐢𝐞𝐧𝐭: Understand users, product goals, and constraints
𝐍𝐚𝐯𝐢𝐠𝐚𝐭𝐞: Combine research with AI-accelerated ideation
𝐂𝐫𝐚𝐟𝐭: Design interfaces that feel intuitive and refined
𝐀𝐫𝐫𝐢𝐯𝐞: Production-ready designs that drive engagement and adoption
𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡
Figma | Adobe XD | Photoshop | Illustrator
Sketch | Lovable / Lovable.dev | UXPin | Midjourney | Axure | Zeplin | Moqups
𝐋𝐞𝐭’𝐬 𝐅𝐢𝐧𝐝 𝐘𝐨𝐮𝐫 𝐍𝐨𝐫𝐭𝐡 𝐒𝐭𝐚𝐫
If you want 𝗺𝗼𝗱𝗲𝗿𝗻 𝗨𝗜/𝗨𝗫 or need an 𝗔𝗜-𝗮𝘀𝘀𝗶𝘀𝘁𝗲𝗱 𝗱𝗲𝘀𝗶𝗴𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 built for speed, clarity, and measurable impact - I’m ready to help guide your product forward.
🌍𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: Monday–Friday, 9 AM–6 PM (GMT+2)
Associated with
Codebridge Design
$1M+
earned
$27/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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I'm a Full-Stack Developer with 9+ years of hand-on experience building complete MERN/MEAN web applications across SaaS, e-commerce, fintech, and startup projects.
🚀 What I can help you with:
✅ React applications — Redux, Redux Toolkit, Redux-Saga, Next.js (SSR/SSG)
✅ Angular applications — Angular 2–19, RxJS, Angular Material
✅ TypeScript front-end — Tailwind CSS, MUI, Bootstrap, SASS
✅ Back-end — Node.js, Express, REST API design and integration
✅ Databases — MongoDB, Firebase
✅ AI API integration — OpenAI, chatbot features, AI-assisted workflows
✅ Figma to code — wireframes and prototypes into production-ready UI
✅ Performance optimization — fast load times, scalable architecture
⚙️ My stack:
🔹 React, Redux, Next.js, Angular, RxJS, Angular Material;
🔹 TypeScript, JavaScript, HTML5, CSS, Tailwind, MUI, Bootstrap, SASS
🔹 Node.js, Express, MongoDB, Firebase
🔹 Git (GitHub / BitBucket / GitLab)
I write clean, modular code, keep communication open throughout, and treat deadlines as non-negotiable.
📩 Send me your project details — I'll respond within 4–8 hours.
Associated with
Face IT
$10M+
earned