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Ukraine
$30/hr
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Job Success
$100K+ earned
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I help eCommerce businesses build, scale, and modernize web systems that are fast, stable, and ready for growth. While Magento 2 development is my main expertise, I also work on Laravel, Node.js, React, and Vue projects — delivering high-quality, scalable, and API-driven solutions. With 19+ years in web development, including 14+ years on Upwork, I deliver results that directly improve performance, conversions, and long-term business success.
I specialize in Magento 2 and headless architectures, combining strong technical expertise with a clear focus on business goals. Whether you need a full store setup, complex migration, or a reliable long-term technical partner, I provide solutions built for reliability, maintainability, and scalability.
Magento 2 expertise:
- Custom modules: payment, shipping, checkout, B2B, API-based integrations
- Performance optimization and Lighthouse/Core Web Vitals improvements
- PWA solutions using Hyvä Theme and ScandiPWA
- Migrations from Magento 1, Shopify, and WooCommerce
- Ongoing maintenance, version upgrades, and security patching
- Composable and API-first eCommerce development
Work approach:
- Clean architecture and maintainable code
- Transparent communication and agile-style workflow
- Fluent written English, comfortable with chat or video communication
- Regular progress updates and flexible coordination across time zones
- Clients value my consistency, precision, and proactive attitude
Tech stack:
- Magento 2 (Hyvä, ScandiPWA), PHP 8+, Laravel, Node.js, React, Vue, MySQL, REST/GraphQL APIs, Docker, Git, GitLab/GitHub, NGINX, Redis, Elasticsearch, CI/CD pipelines.
Basic-to-mid DevOps experience (Docker, NGINX, Redis, Elasticsearch).
Availability and cooperation:
- Flexible schedule
- Minimum project size: $500
- Open to long-term maintenance and technical partnership
Sergey Z.
has worked
.
Associated with
ecomdev
$24/hr
100%
Job Success
$30K+ earned
Available now
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React Next.js JavaScript TypeScript Node.js NestJS Flutter React Native OpenAI AWS PostgreSQL MongoDB Supabase Firebase AI SaaS Mobile Cloud MVP Development
End-to-end software development for startups, SaaS companies, and growing businesses - from idea validation and MVP development to scalable platforms used by thousands of users.
We are Incode Group, a software development company with 50+ engineers, 10+ years of experience, 500+ delivered projects, and long-term partnerships with startups and established businesses across the US, Europe, Australia, and the Middle East.
Whether you need an MVP launched in weeks, AI-powered features, a mobile application, a dedicated development team, or a complex SaaS platform built from scratch, we provide full-cycle product development from discovery and architecture to deployment and long-term support.
𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐔𝐬
500+ successfully delivered projects
50+ engineers across web, mobile, AI, QA, UI/UX, and DevOps
10+ years of software development experience
95% of clients continue working with us beyond the initial engagement
MVPs launched in as little as 4-8 weeks
End-to-end ownership from planning and architecture to deployment and maintenance
𝐖𝐡𝐚𝐭 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐔𝐬 𝐅𝐨𝐫
SaaS product development
AI applications, chatbots, copilots, and automation tools
Mobile app development (Flutter & React Native)
Scaling and modernizing existing platforms
Dedicated development teams and staff augmentation
Technical advisory and architecture reviews
Cloud infrastructure, DevOps, and CI/CD
Third-party API and payment integrations
𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐎𝐮𝐭𝐜𝐨𝐦𝐞𝐬
• Reduced infrastructure costs by up to 35%
• Improved application performance by up to 60%
• Automated workflows that reduced manual operations by up to 70%
• Built AI-powered applications processing thousands of requests daily
• Delivered MVPs that helped startups validate ideas and acquire early customers
𝐓𝐲𝐩𝐢𝐜𝐚𝐥 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲 𝐓𝐢𝐦𝐞𝐥𝐢𝐧𝐞𝐬
- MVPs & New Product Launches - typically 4-12 weeks depending on scope and integrations
- Feature Development & Existing Product Improvements - usually 2-10 days per feature or 1-4 weeks for larger modules
- AI-Powered Features, Chatbots & LLM Integrations - generally 1-4 weeks depending on complexity and data sources
- Third-Party API & Payment Integrations (Stripe, Twilio, Shopify & more) - often 2-10 days per integration
- Cross-Platform Mobile Apps (Flutter, React Native) - MVPs typically 6-16 weeks, production platforms 3-6+ months
- Cloud Infrastructure, DevOps & CI/CD Setup - usually 3-10 days for initial setup
- UI/UX Design, Figma Prototypes & Design Systems - commonly 1-4 weeks depending on the number of screens and flows
- Legacy System Refactoring & Performance Optimization - typically 1-6 weeks depending on codebase size and technical debt
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐖𝐞 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡
Real Estate - property management platforms, booking systems, rental marketplaces, CRM solutions
FinTech & Financial Services - payment systems, financial dashboards, reporting platforms, internal tools
Healthcare - patient portals, healthcare management systems, telemedicine platforms, wellness applications
EdTech - learning management systems, online training platforms, educational mobile applications
AI Products & Automation - chatbots, AI assistants, workflow automation, recommendation systems, AI-powered SaaS platforms
Fitness & Wellness - coaching platforms, activity trackers, fitness mobile apps, subscription-based products
E-commerce & Marketplaces - online stores, B2B marketplaces, checkout systems, payment integrations
Logistics & Transportation - fleet management, delivery platforms, route optimization, tracking systems
SaaS & Business Platforms - internal tools, workflow automation, CRM systems, enterprise software
𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬
Frontend
React.js Next.js TypeScript JavaScript Redux Toolkit Tailwind CSS Material UI Shadcn UI
Backend
Node.js NestJS Express.js GraphQL REST APIs WebSockets Prisma TypeORM Drizzle ORM RabbitMQ Kafka
Mobile
Flutter React Native iOS Android
AI & LLM
OpenAI ChatGPT Anthropic Claude LangChain Pinecone RAG Systems AI Agents Prompt Engineering
Databases
PostgreSQL MongoDB MySQL Supabase Firebase Redis DynamoDB ClickHouse
Cloud & DevOps
AWS Docker Kubernetes CI/CD GitHub Actions GitLab CI Vercel Railway DigitalOcean
𝐄𝐧𝐠𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐌𝐨𝐝𝐞𝐥𝐬
• Dedicated Developers
• Dedicated Teams
• Staff Augmentation
• Full Product Development
• Technical Advisory
𝐇𝐚𝐯𝐞 𝐚 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐢𝐧 𝐦𝐢𝐧𝐝?
Send me your requirements, product idea, or current challenges, and we'll help you define the fastest and most reliable path from concept to launch.
Anna K.
has worked
.
Associated with
Incode Group
$900K+
earned
$25/hr
100%
Job Success
$700K+ earned
Available now
Offers consultations
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🚀 Hello!
I'm Anna, a Full Stack Developer AI with more than 5 years of experience building AI-powered SaaS products, web applications, and mobile solutions for startups, product companies, and growing businesses. As a Python Full Stack Developer and SaaS Developer, I help companies transform ideas into scalable digital products, modernize existing platforms, and develop intelligent software that supports long-term business growth. My experience spans the complete product lifecycle—from architecture and development to deployment, optimization, and continuous improvement.
💡 My core expertise as a Full Stack Developer AI includes React, Next.js, TypeScript, JavaScript, React Native, Python, Django, Flask, FastAPI, PHP, Laravel, and modern cloud technologies. As a Python Full Stack Developer, I develop scalable backend services, intelligent APIs, and AI-powered features while creating responsive frontend applications. As a SaaS Developer, I focus on building secure, maintainable, and high-performance platforms that scale together with growing businesses.
🧩 My background includes extensive experience with PostgreSQL, MongoDB, MySQL, Supabase, Firebase, Firestore, Redis, and DynamoDB. Working as a Python Full Stack Developer, I understand how software behaves from the database layer to the user interface. This allows me to design efficient architectures, optimize data flow, improve application security, and build reliable backend systems that support modern SaaS products. As a Full Stack Developer AI, I also integrate Large Language Models, AI APIs, and intelligent automation into production applications.
⚙️ I have strong experience building SaaS platforms, AI-powered dashboards, internal business systems, marketplaces, booking platforms, CRM solutions, ERP software, eCommerce products, and mobile applications. As a SaaS Developer, I design multi-tenant architectures, scalable APIs, authentication systems, payment integrations, and cloud-ready infrastructures. My work as a Full Stack Developer AI combines frontend development, backend engineering, database design, and artificial intelligence into complete business solutions.
📱 I also bring solid experience with SSR, PWA development, and cross-platform mobile applications. As a Python Full Stack Developer, I build SEO-friendly Next.js applications, React Native mobile apps, and modern cloud-based systems connected to AI services and scalable backend infrastructure. My experience as a SaaS Developer includes performance optimization, infrastructure planning, API integrations, and continuous platform improvements that help businesses grow efficiently.
🔧 Beyond coding, I contribute as a Full Stack Developer AI who understands product strategy, engineering processes, and software delivery. My experience includes software architecture, code reviews, Git workflows, CI/CD pipelines, technical documentation, sprint planning, mentoring, and collaboration with multidisciplinary teams. As a Python Full Stack Developer, I enjoy solving complex technical challenges while keeping software simple to maintain and easy to extend.
📈 Companies hire me when they need a SaaS Developer capable of building complete products instead of isolated features. As a Full Stack Developer AI, I can join existing engineering teams, design scalable architecture, integrate AI functionality, improve system performance, and modernize legacy applications. My experience as a Python Full Stack Developer allows me to work confidently across frontend, backend, databases, APIs, and cloud infrastructure without losing focus on business objectives.
🛠️ My services include AI-powered SaaS development, Python backend development, React.js development, Next.js applications, Django and Flask development, FastAPI services, API integration, database architecture, authentication systems, payment gateway integration, cloud deployment, AI implementation, automation workflows, SSR, PWA, testing support, application modernization, and long-term software maintenance. As a SaaS Developer, I always build solutions that are scalable, secure, and ready for future expansion.
🤝 As a Full Stack Developer AI, I communicate effectively with founders, product managers, designers, and engineering teams. I understand priorities, deadlines, and technical trade-offs, allowing me to move confidently between product discovery, architecture planning, implementation, debugging, optimization, and production releases. As a Python Full Stack Developer, I believe successful software is created through strong collaboration and continuous improvement.
🎯 A successful SaaS Developer understands when to optimize, when to simplify, and when to invest in scalable architecture. My approach as a Full Stack Developer AI combines modern engineering practices with artificial intelligence, automation, and business thinking to build products that remain reliable as they evolve.
Best regards,
Anna
Anna K.
has worked
.
Associated with
Join.To.IT - Top Rated Plus Agency 🏅
$9M+
earned
$30/hr
100%
Job Success
$10K+ earned
Available now
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Stop losing users to clunky, slow-loading interfaces, research shows 53% of users will abandon a web app if it takes more than three seconds to load! 🚀
I am a Senior full stack developer and Senior Engineer with 8 years of experience building elite, high-performing web apps.
As a full stack developer and specifically a full stack developer react node, I architect scalable SaaS platforms.
When you need a full stack developer react node, you get a versatile web developer, skilled front-end developer, and robust back-end developer. Here is how my full stack developer react node expertise ensures your website and web app succeed:
Reduced page loads by 42% for a flagship saas product as lead full stack developer, bridging the gap between a ux designer and a front end developer react.
Scaled a react and node.js web app for 100k+ users, proving the value of a dedicated full stack developer react node utilizing the mern stack.
Boosted retention by 30% by overhauling website ia, showing exactly why your MVP needs a reliable full stack developer react node.
💻 Architecture & Front-End Excellence
💡 As a dedicated full stack developer, I leverage mern architecture, next.js, and react to build robust solutions. A top-tier full stack developer react node combines the vision of a ux designer and a designer to ensure exceptional ia. I am a react developer and front-end developer integrating a high-converting exaplainer video or demo video to boost saas sales and saas marketing. A successful web developer and full stack developer masters the MERN stack, javascript, vue.js, and angular for comprehensive saas platforms. Every web app I build as a full stack developer react node relies on node.js, nestJS, react, and next.js to deliver an ai-powered experience. A full stack developer react node knows react is the key to scalable ui. As a full stack developer I guarantee every saas mvp is flawlessly executed by a true full stack developer react node,.
📱 Mobile App Development & Full Stack Power
⚙️ As a mobile app developer and full stack developer react node, I create every native app with precision. Using react native and react native mobile, your mobile app is seamless. A full stack developer knows a react native mobile deployment requires a strong back-end developer managing firebase and supabase. As a react developer and full stack developer react node, every native app and web app I build integrates flawlessly with node.jss and next.js. Hire a full stack developer react node and get a react developer who masters supabase to firebase, ensuring your react ecosystem thrives. Every saas business needs a full stack developer react node who is both ui-focused and backend-focused.
📈 E-commerce, Backend & Niches
🔥 Building a custom shopify storefront, shopify website, or shopify platform? A full stack developer react node brings essential php and laravel skills. As a back-end developer and full stack developer, I leverage laravel, python, and php, ensuring advanced laravel routing for complex b2b software. A full stack developer react node excels in e-commerce, integrating woocommerce and shopify. My full stack developer react node experience covers everything from a landing page to a healthcare app, clinic saas, and fitness saas using rest api and postgresql. As an ai workflow engineer and front-end layout engineer, I engineered a security automation platform, cold email software, and live commerce saas.
🚀 Next-Level Web Solutions
🌐 As a full stack developer, I deliver a cost-controlled MVP using webflow customization / react integration and aws. My skills build a robust business management app and scalable MVP management system. Whether creating a browser extension, deterministic fsm intake system, or live basketball betting dashboard, I am the full stack developer react node for you. Deploying a multi-dealer inventory marketplace and web-based casino game utilizing redis, websocket, and java spring proved my wordpress developer capabilities. My webflow customization / integration drives social integration and onboarding flow enhancement. I build an ai-powered / ai-savvy mvp with css grid, ai, and next.js. Need a full stack developer react node to scale? My expertise as a full stack developer react node and full stack developer is unmatched. A web developer mastering ia, mern, and webflow ensures your demo video, woocommerce exaplainer video, and webflow perfectly boost mvp sales and SaaS marketing. When you hire a full stack developer, you need an engineer who breathes react and SaaS. My journey as a full stack developer react node guarantees that whether we are scaling a SaaS platform or a bespoke web app, your react architecture remains pristine. A dedicated full stack developer react node is the ultimate asset for your SaaS. As a Full Stack Developer React Node, I empower your business to thrive. Hire a full stack developer react node to scale your SaaS, MERN web app, and react native mobile app today!
Dmytro K.
has worked
.
$32/hr
100%
Job Success
$20K+ earned
Start of list.
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Full Stack Developer (React + Node.js) - frontend-focused, production-grade, team-backed.
I'm a full stack developer who builds, maintains, and improves modern, responsive web applications - working products with real users, not prototypes that fall over on first real traffic. React and Next.js on the front end, Node.js on the back end, full ownership from concept to deployment.
6+ years building for the web. 30+ React and full stack applications shipped - SaaS platforms, dashboards, and MVPs taken from concept to production. Recent builds: 40-60% faster page loads, MVPs live in 4-8 weeks, and dashboards a 20-person team opens every morning to run their day.
📈 WHAT YOU GET
One full stack developer as your single point of contact, with a small team of backend, QA, and design specialists behind me. You cover frontend developer, react developer, backend, and database work without juggling three separate hires - and you keep full ownership of the codebase, start to finish.
⬩ Clean, scalable, maintainable React code with clear component architecture
⬩ Responsive front-end interfaces wired to REST APIs and real backend services
⬩ Honest timelines, written async updates, and delivery without micromanagement
🚀 FRONTEND (REACT / NEXT.JS)
As a react developer and front end developer, I build modern, user-friendly interfaces with React.js, Next.js, JavaScript, TypeScript, and Tailwind CSS. Pixel-accurate Figma-to-code, data-heavy dashboards, admin consoles and SaaS portals, advanced tables and filtering, real-time data views, and the performance work that keeps Core Web Vitals and load times healthy. Strong on responsive design, cross-browser behavior, and clean state management. If your brief says react.js developer, that's me too.
⚙️ FULL STACK & BACKEND
On the backend developer side I work with Node.js (Express, Nest.js), REST API integration, and third-party APIs - Stripe, auth, maps. Database design, optimization, and DBA-level query tuning across PostgreSQL, MongoDB, and MySQL - the schema work a project needs from day one, not bolted on later. I also take existing codebases, including AI-generated ones, and harden them for production: bug fixing, performance, security, and stability.
🧩 WHERE I FIT
⬩ Build a SaaS MVP or web application from concept to deployment
⬩ Build the frontend for an existing backend, or the backend behind an existing UI
⬩ Get up to speed quickly, stabilize, debug, and improve a live product without rebuilding everything
⬩ Deliver a written scoping document before you commit to the full build
⬩ Augment your existing team with a vetted developer who can plug in quickly, without the delay of a full hiring process
🌟 ALSO IN REACH
When a web product needs a mobile companion, I extend into React Native. I take on Python developer work when a service calls for it, and I can migrate marketing surfaces off WordPress or Webflow into one unified React codebase - so the whole product lives in one place.
🔗 DOMAINS
SaaS platforms, marketplaces and two-sided / multi-vendor products, booking and rental platforms, fintech and Stripe-powered checkout, ecommerce, B2B dashboards, healthcare and internal tools. Marketplace and booking builds are home turf for our team.
🛠️ STACK
React, React.js, Next.js, JavaScript, TypeScript, Node.js, Nest.js, Express, REST API, Tailwind CSS, Bootstrap, HTML5, CSS3, PostgreSQL, MongoDB, MySQL, Stripe, Git, AWS, Vercel.
🤖 AI-NATIVE DELIVERY (FASTER, NOT SLOPPIER)
I build with agentic coding tools - Claude Code and MCP servers wired into my workflow - to move faster on scaffolding, refactors, test coverage, and code review. The difference: AI accelerates the work, but a senior engineer owns the architecture and ships it production-ready. It's exactly why clients bring me in to rescue vibe-coded, AI-generated codebases - I know where these tools cut corners, so you get the speed without the mess. I also integrate AI features (OpenAI and Claude APIs) into web apps and dashboards.
If you need a reliable full stack developer or react developer to build, maintain, and improve your web application - or a web developer who takes ownership of both the interface and what powers it - click Invite or Hire and let's scope it together.
Oleh P.
has worked
.
Associated with
Roobykon | Digital marketplace development company | Custom web development
$700K+
earned
$23/hr
100%
Job Success
$10K+ earned
Available now
Start of list.
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Skilled 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 Engineer. I work mainly with Microsoft tools. Create strong, growing, and fast web applications using 𝐂# and .𝐍𝐄𝐓, along with modern ways to build the front end, like 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 and 𝐑𝐞𝐚𝐜𝐭. I know all parts of making an application, from how the data is stored and how it's shared, to making good-looking and easy-to-use interfaces.
𝐈 𝐡𝐚𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 𝐯𝐚𝐫𝐢𝐨𝐮𝐬 𝐟𝐢𝐞𝐥𝐝𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠:
🛒 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞: I have made and improved online shops. This includes connecting payment systems (like Stripe, PayPal), making shopping carts work, and managing what is in stock. I have made these shops work better, so more people buy things. (Example: Increased average order value by 15% through personalized product recommendations.)
💳 𝐅𝐢𝐧𝐭𝐞𝐜𝐡: I have built safe money applications, like online banks, payment systems, and ways to see financial data. I made sure these followed the rules and were very secure.
🏥 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞: I have created applications that follow health rules for managing patients, booking appointments, and keeping health records. I focused on making these easy to use and keeping the data safe.
🚚 𝐋𝐨𝐠𝐢𝐬𝐭𝐢𝐜𝐬: I have designed applications for planning the best routes, tracking where things are, and managing how goods are moved. This has made deliveries much more efficient. (Example: Reduced delivery times by 20% with optimized routing algorithms.)
In addition, I have built and looked after many 𝐒𝐚𝐚𝐒 applications using .NET. 🛠️
𝐓𝐡𝐚𝐭’𝐬 𝐰𝐡𝐚𝐭 𝐈’𝐦 𝐬𝐤𝐢𝐥𝐥𝐞𝐝 𝐢𝐧:
𝐁𝐚𝐜𝐤𝐞𝐧𝐝: C#, .NET Framework, .NET Core, ASP.NET (MVC, Web API), Entity Framework, SQL Server, RESTful API design and development, Web API, gRPC, Dependency Injection, LINQ, ORM
𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: JavaScript, TypeScript, Angular, React, HTML5, CSS3, State Management (Redux, NgRx), UI/UX Design, Responsive Design, SPA
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞: SQL, NoSQL, Database Design, Stored Procedures, Optimization
𝐂𝐥𝐨𝐮𝐝: Azure, AWS, Docker, Kubernetes
𝐎𝐭𝐡𝐞𝐫: Git, Agile, CI/CD, Unit Testing, Microservices Architecture, WebSocket
𝐋𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 about what you need and how my skills can help you succeed. Please contact me to discuss your project!
𝐁𝐞𝐬𝐭 𝐰𝐢𝐬𝐡𝐞𝐬, 𝐎𝐫𝐞𝐬𝐭
Below are mentioned keywords so you could find me easier :)
.NET Core, .NET Framework, .NET Web API, .NET to Laravel migration projects, AI App Development, AI design tools, API, API Development, API Integration, API microservices, ASP.NET, ASP.NET 4.8 Web Forms, ASP.NET Core, ASP.NET MVC, ASP.NET Web API, Angular, Angular 15+, AngularJS, Auth0, Blazor, Bootstrap, Bruno, C#, C++, CSS, CSS3, Database Design, Database Development, Database Optimization, Desktop Application, Docker, Domain-Driven Design, Entity Framework, Excellent communication and collaboration abilities, Figma, Sketch, or similar, Front-End Development, Full-Stack Development, GDPR, Google Calendar API, GraphQL, HTML, HTML5, JSON, Java, JavaScript, Microservice, Microsoft Azure, Microsoft IIS, Microsoft SQL Server, Microsoft SQL Server Programming, Microsoft Visual Studio, MongoDB, MySQL, Network programming, Node.js, Nuxt.js, PHP, PostgreSQL, Proven track record of large-scale platform redesign projects, Python, QWBC, QuickBooks Enterprise, RESTful API, React, React Native, Responsive Design, Salesforce App Development, Salesforce Lightning, SEO optimization, Software Architecture & Design, SQL, Strong analytical and problem-solving skills, Telerik, TypeScript, UX & UI, User Interface Design, VB.NET, Web Application, Web Design, Web Development, Web development principles, Windows App Development, XML, Adobe Photoshop, Amazon EC2, Amazon Web Services, Azure DevOps, jQuery, backend.
Associated with
Inforce.digital
$90K+
earned
$30/hr
99%
Job Success
$1M+ earned
Available now
Offers consultations
Start of list.
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I'm an AI Product Engineer with a focus on helping startups and businesses leverage AI and adapt to the modern software industry, which is now more accessible than ever. That includes full-stack development, AI automation, AI integration, prototyping, custom development, and, of course, taking over what you've already built and turning it into a production-grade solution.
𝐁𝐫𝐢𝐧𝐠 𝐢𝐧 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐭𝐨𝐭𝐲𝐩𝐞 𝐛𝐮𝐢𝐥𝐭 𝐰𝐢𝐭𝐡 𝐀𝐈 𝐚𝐧𝐝 𝐈'𝐥𝐥 𝐭𝐮𝐫𝐧 𝐢𝐭 𝐢𝐧𝐭𝐨 𝐚 𝐩𝐫𝐨𝐟𝐢𝐭𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧!
𝐈𝐟 𝐲𝐨𝐮'𝐫𝐞 𝐧𝐨𝐭 𝐬𝐮𝐫𝐞 𝐚𝐛𝐨𝐮𝐭 𝐲𝐨𝐮𝐫 𝐢𝐝𝐞𝐚, 𝐣𝐮𝐬𝐭 𝐬𝐞𝐧𝐝 𝐦𝐞 𝐲𝐨𝐮𝐫 𝐛𝐚𝐬𝐢𝐜 𝐬𝐩𝐞𝐜𝐬 𝐨𝐫 𝐑𝐅𝐏, 𝐚𝐧𝐝 𝐈'𝐥𝐥 𝐭𝐮𝐫𝐧 𝐢𝐭 𝐢𝐧𝐭𝐨 𝐚𝐧 𝐀𝐈 𝐩𝐫𝐨𝐭𝐨𝐭𝐲𝐩𝐞 𝐰𝐢𝐭𝐡𝐢𝐧 𝟑𝟎 𝐦𝐢𝐧𝐮𝐭𝐞𝐬 𝐚𝐭 𝐧𝐨 𝐜𝐡𝐚𝐫𝐠𝐞. 𝐅𝐨𝐫 𝐦𝐞, 𝐢𝐭'𝐬 𝐣𝐮𝐬𝐭 𝟑𝟎 𝐦𝐢𝐧𝐮𝐭𝐞𝐬 𝐨𝐟 𝐰𝐨𝐫𝐤. 𝐅𝐨𝐫 𝐲𝐨𝐮, 𝐢𝐭'𝐬 𝐚 𝐠𝐫𝐞𝐚𝐭 𝐰𝐚𝐲 𝐭𝐨 𝐯𝐚𝐥𝐢𝐝𝐚𝐭𝐞 𝐲𝐨𝐮𝐫 𝐢𝐝𝐞𝐚 𝐛𝐞𝐟𝐨𝐫𝐞 𝐢𝐧𝐯𝐞𝐬𝐭𝐢𝐧𝐠 𝐟𝐮𝐫𝐭𝐡𝐞𝐫.
🔐 𝗞𝗲𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀:
1. AI Automation: streamlining workflows and business processes with AI
2. AI Prototyping: building fast, working proof-of-concepts to validate ideas
3. AI Hardening: taking over existing solutions and bringing them into production
4. Full-Stack Development: end-to-end product development, from frontend to backend
🌠 My background is in custom software development, and I spent a while working as a hands-on engineer. I was lucky enough to spend my entire career working with fast-growing, large-scale, and enterprise clients, representing an outsourcing vendor.
🌌 Apart from development activities, I was engaged in many others: interviewing engineers, participating in pre-sales, training programs, leading and driving development processes, and much more. I was always a company guy and was interested in and open to everything.
👴🏻 That’s where I matured as an engineer. I learned a lot along the way, saw how painful the software development process could be, and understood the pros and cons of different organizations, including where Fortune 100 companies struggle.
📺 I’m a professional engineer focused on delivering business outcomes for you — not a part-time freelancer juggling Upwork with a full-time job or doing it for extra income. I'm working with all types of clients and budgets.
✅ 99% Job Success Score; 100 + projects delivered — from idea to production-ready software
🛡 Expert-Vetted — interviewed and approved by the Upwork team
🚀 Fastest-Growing Upwork Profile Globally — $4M+ earned across multiple profiles since 2022
🌍 Most Recognized & Viewed Upwork Profile Worldwide
💰 Scaled 5 Upwork Profiles to $300K+ revenue each with strong inbound leads
🏢 Delivered Projects for Fortune 100 & Inc. 5000 Companies and UAE government
🧠 Led Pre-Sales, Estimations, Code Reviews & Tech Interviews for top-tier clients
💻 Even if we don’t end up working together, I’ll help you identify risks and guide you on how to make the product happen — because in the end, it’s all about mindset, not just coding skills.
💡 Answering a question how am I different in this competitive AI industry — the answer is simple: mindset. You can learn endless frameworks, libraries, languages — alright, cool, but mindset and deep understanding of this world outside and inside the industry is what really makes a difference.
𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬:
AI Automation, AI Agents, Agentic AI, LLM Integration, OpenAI API, Claude API, Gemini API, RAG, Vector Database, AI Chatbot Development, AI Assistants, Workflow Automation, Business Process Automation, MCP (Model Context Protocol), Multi-Agent Systems, Prompt Engineering, Full Stack Development, Full Stack Developer, Web Application, SaaS Platform, MVP Development, React, Next.js, Node.js, TypeScript, REST API, API Integration, PostgreSQL, MongoDB, Authentication, User Management, Admin Dashboard, Backend Services, Payment Integration, Stripe Integration, Subscription Management, Role-Based Access, Scalable Applications, Production-ready, Performance Optimization
Denis S.
has worked
.
Associated with
Lumitech
$2M+
earned
$24/hr
100%
Job Success
$20K+ earned
Available now
Offers consultations
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Hey! You are here to find a Full-Stack Developer who can deliver real results.
I specialize in building scalable, high-performance web applications using React, Next.js, Node.js, NestJS and TypeScript - helping startups and businesses turn ideas into reliable, production-ready products.
🚀Whether it’s a SaaS platform, dashboard, marketplace, or AI-powered app - I handle everything from frontend UX to backend architecture and deployment.
✨ What I bring to the table
Fluent English & strong communication - clear, fast, and transparent collaboration
4+ years of full-stack experience in real-world projects
Ownership mindset - I don’t just code, I take responsibility for the result
Reliable delivery - clean code, on time, without surprises
Experience working independently and in teams (Scrum, Agile)
Strong focus on performance, scalability, and user experience
🛠️ Tech Stack
Frontend Development
React · Next.js (SSR, App Router) · TypeScript · Redux / Zustand · TanStack Query
Tailwind CSS · Material UI · Shadcn UI · styled-components · SCSS/Sass
Forms: React Hook Form + Zod/Yup
Data Visualization: Chart.js · Recharts · ApexCharts
Backend Development
Node.js · Express.js · NestJS
REST APIs · GraphQL · WebSockets / Socket io
Authentication: JWT · Auth0 · OAuth
Databases & Storage
PostgreSQL · MongoDB · Firebase · Supabase · Neo4j · Pinecone
File storage & media handling
Integrations
Stripe (payments) · Twilio (SMS) · SendGrid (email) · OpenAI API
Algolia · ElasticSearch
DevOps & Cloud
Docker · CI/CD · GitHub Actions · GitLab
AWS (EC2, Lambda, S3, RDS, Cognito, API Gateway)
Vercel · Netlify
Testing & Quality
Jest · Mocha · Supertest · Postman
⭐ Why clients choose me
🧠 I solve business problems, not just technical tasks
I think beyond code - suggesting better architecture, UX improvements, and scalable solutions.
⚡Fast and efficient development
I know how to deliver quickly without sacrificing quality - important for MVPs and fast-growing products.
🔁Full-cycle development
From idea → architecture → development → deployment → scaling
You don’t need multiple developers - I cover the whole process.
🧩 Clean, maintainable code
Well-structured, documented, and easy to scale - so your project won’t turn into technical debt.
📈 Focus on results
My goal is not just to build features, but to help you grow your product and business.
🤝 Easy to work with
Responsive, proactive, and always aligned with your goals.
Let’s work together!
Have an idea, MVP, or existing product to improve?
I propose to discuss - I’ll help you define the best technical approach and deliver a solution that works 🚀
Olha S.
has worked
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Associated with
Incode Group
$900K+
earned
$25/hr
98%
Job Success
$1M+ earned
Available now
Offers consultations
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🚀 Hi, I'm Dmytro, I'm a Full Stack Developer AI with more than 8 years of experience building SaaS platforms, AI-powered applications, and scalable web products for startups, product companies, and growing businesses. As a Full Stack Developer AI, I've worked on MVPs, enterprise platforms, automation tools, and intelligent web applications used by thousands of users worldwide.
💡 My primary focus as a Full Stack Developer AI is designing complete software solutions that combine modern frontend technologies, scalable backend architecture, and artificial intelligence. As a Python Full Stack Developer, I enjoy transforming complex business requirements into reliable, maintainable, and high-performing products that deliver measurable business value.
🤝 Throughout my career as a Full Stack Developer AI, I've collaborated with designers, product managers, AI engineers, DevOps specialists, and business stakeholders. I believe every SaaS Developer should understand not only software architecture but also customer needs, product strategy, and long-term scalability.
🛠️ Technologies I work with
As a Python Full Stack Developer, my primary stack includes:
• Python
• Django
• Flask
• FastAPI
• React
• Next.js
• TypeScript
• JavaScript
• Node.js
• PostgreSQL
• MongoDB
• Redis
• Docker
• AWS
• OpenAI API
• LangChain
📈 Over the years, I've helped companies hire a Full Stack Developer AI capable of building production-ready SaaS platforms, integrating AI into existing products, and modernizing legacy systems. As a SaaS Developer, I focus on creating software that remains scalable as businesses grow.
⚙️ What I can help with
As a Full Stack Developer AI, I can help with:
• Building AI-powered SaaS platforms from scratch
• Developing scalable web applications
• Backend architecture and API development
• AI integration using OpenAI and LLMs
• Workflow automation and intelligent assistants
• SaaS architecture and multi-tenant systems
• Database design and optimization
• Authentication and authorization
• Payment gateway integration
• Cloud deployment and CI/CD
• Performance optimization
• Legacy system modernization
• Bug fixing and long-term maintenance
🔧 Many companies choose me as a Python Full Stack Developer because I can take ownership of the complete product lifecycle—from architecture and backend development to frontend implementation and AI integration. As a SaaS Developer, I always balance technical quality with business objectives.
🌐 I've worked as a Full Stack Developer AI on startup MVPs, enterprise platforms, internal business systems, CRM solutions, marketplaces, analytics dashboards, and AI automation platforms. My experience as a Python Full Stack Developer allows me to quickly adapt to different domains, engineering processes, and development teams.
🧩 Beyond application development, I have strong experience designing scalable backend systems, cloud infrastructure, and AI services. This enables me to work not only as a Full Stack Developer AI, but also as a technical partner capable of making architectural decisions that support long-term product growth.
💻 I've worked with:
• PostgreSQL
• MySQL
• MongoDB
• Redis
• Supabase
• Firebase
• AWS
• Docker
• Kubernetes
• Python
• Node.js
• React
• OpenAI API
• LangChain
🔗 This broad technical background allows me to deliver complete products as a Python Full Stack Developer, while my experience as a SaaS Developer helps businesses build reliable platforms that are secure, maintainable, and ready to scale.
🎯 How I work
I believe a great Full Stack Developer AI should think beyond writing code. Understanding product strategy, user experience, software architecture, AI capabilities, scalability, and maintainability is equally important.
🤝 As a Python Full Stack Developer, I value ownership, transparency, and close communication with clients. Every SaaS Developer should build software that is easy to extend, simple to maintain, and capable of supporting future business growth.
📚 I've also contributed in areas such as:
• Software architecture
• AI solution design
• Technical planning
• Code reviews
• Database optimization
• CI/CD pipelines
• Agile development
• Team collaboration
• Mentoring developers
🚀 Whether you need a Full Stack Developer AI for a new AI-powered product, a Python Full Stack Developer to strengthen your engineering team, or a SaaS Developer to build a scalable cloud platform, I'd be happy to help. My goal is to deliver software that combines modern engineering practices, artificial intelligence, and business value.
📊 Companies often hire a Full Stack Developer AI to build intelligent SaaS platforms, automate business workflows, or integrate generative AI into existing products. Others look for an experienced Python Full Stack Developer to modernise legacy systems.
✨ If you're looking for a Full Stack Developer AI, I'd be happy to discuss your project.
Best regards,
Dmytro
Dmytro K.
has worked
.
Associated with
Join.To.IT - Top Rated Plus Agency 🏅
$9M+
earned
$35/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
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I’ve been building web applications since 2018, with 8+ years in frontend and 6+ years working as a Full Stack Developer, delivering 20+ long-term projects for 40+ clients worldwide. As a Full Stack Developer, I help businesses turn ideas into scalable, production-ready products using React, Node.js, modern MERN architecture, and AI-first development approaches.
As a Full Stack Developer, I specialize in building fast, scalable SaaS products, AI-powered applications, and MVPs. I work as a Full Stack Developer who can take a product from idea to production, covering frontend, backend, and infrastructure as a Full Stack Developer.
⚡️ What I build
As a Full Stack Developer, I develop SaaS platforms, AI SaaS products, dashboards, and API-driven systems. I approach every project as a Full Stack Developer focused on performance, UX, and maintainability.
As a Full Stack Developer, I build systems that are easy to scale and support long-term growth. I also work as a Full Stack Developer who improves existing systems and cleans up architecture when needed.
I build AI applications, AI agents, chatbots, and automation tools using OpenAI, Claude, and modern LLM workflows. As a Full Stack Developer, I combine AI capabilities with solid engineering practices.
As a Full Stack Developer, my core stack includes React, React.js, Next.js, Node, Node.js, Nest, Nest.js, and MERN. As a Full Stack Developer, I work with TypeScript, REST API architecture, microservices, and AI integration patterns.
💬 Client feedback
"Igor was instrumental in helping me build a SaaS platform from scratch. As a Full Stack Developer, his expertise in both backend and frontend development was impressive, and he adapted quickly to changes throughout the project. His attention to detail and great taste in UI/UX design made a significant difference in the final product. He also excelled as a Full Stack Developer in AI/ChatGPT integration, PWA, mobile-responsive web apps, and worked seamlessly with technologies like MongoDB, Docker, Vercel, Render, Google Cloud, and SendGrid API. I highly recommend working with Igor for any development project!"
"Igor demonstrated exceptional proficiency as a Full Stack Developer during his work on our SaaS MVP. From the outset, he immersed himself fully in the project, contributing significant value from the very first day. His communication skills were outstanding, ensuring smooth and effective collaboration. Igor was highly available and showed a remarkable dedication to his work as a Full Stack Developer. I wholeheartedly recommend him for any development projects. His skill set and work ethic are truly commendable, and I eagerly look forward to collaborating with him on future endeavors."
🛠️ Tech Stack
Frontend ⚡️
React, React.js, Next.js, TypeScript
Backend 🔧
Node, Node.js, Nest, Nest.js, Express
Database & Cloud ☁️
MongoDB, SQL, AWS, Vercel, Supabase
💡 As a Full Stack Developer, I connect frontend, backend, and infrastructure into one system. I work as a Full Stack Developer who ensures stable releases and clean architecture.
As a Full Stack Developer, I can join an existing codebase, fix bottlenecks, and stabilize delivery. I often work as a Full Stack Developer improving performance and scaling systems.
As a Full Stack Developer, I build AI-powered features using OpenAI, Claude, and modern AI tools. I also act as a Full Stack Developer who aligns product, tech, and delivery.
I can work as a Full Stack Developer independently or as a Full Stack Developer leading a team. In both cases, I stay hands-on as a Full Stack Developer.
🤝 If you’re looking for a Full Stack Developer to build or scale a SaaS product, MVP, or AI system — let’s talk. I work as a Full Stack Developer who understands business goals and delivers scalable solutions as a Full Stack Developer.
Ihor S.
has worked
.
Associated with
IteamDevelopment
$400K+
earned