Barender S.

I help startups and product teams build, improve, and scale web and mobile applications, including products with AI-powered features, without compromising performance, stability, or user experience. Clients usually come to me when they need to turn an idea into an MVP, improve an existing application, integrate complex APIs, or add AI capabilities to their product. Common problems I solve: • Turning product ideas and requirements into production-ready applications • Slow, unstable, or difficult-to-maintain applications • Complex API, payment, and third-party integrations • Scalable backend and database architecture • AI features such as chat, automation, recommendations, and intelligent workflows • New features that need to be added without breaking existing functionality • Legacy code that needs refactoring and modernization What I build: • SaaS & startup MVPs • Custom web applications and business platforms • React Native mobile applications for iOS & Android • Admin dashboards and data-driven platforms • Scalable REST APIs and backend systems • AI-powered applications and features • API integrations, automation, and payment workflows • Internal tools and enterprise applications ##Technology Stack: Frontend: React.js, Next.js, React Native, JavaScript, TypeScript Backend: Node.js, Express.js, REST APIs Database: MongoDB, PostgreSQL AI & Automation: OpenAI, Claude, Gemini, LangChain, AI APIs, automation workflows Cloud & Infrastructure: AWS, Docker, Firebase, Vercel How I work: • I focus on solving the actual business problem, not just writing code • I build scalable and maintainable architecture from the beginning • I use modern AI coding tools to accelerate development, debugging, and testing while manually reviewing and validating the output • I prioritize performance, security, and reliability • I communicate clearly and take ownership of delivery • I make sure new features work with the existing system rather than creating new problems Why clients work with me: With 7+ years of full-stack development experience, I understand both the technical and product side of building applications. Whether you are starting with an MVP, scaling an existing platform, building a React Native app, or adding AI to an existing product, I can help take it from requirements to a reliable production solution. Let's Build or Improve Your Product: If you're planning to build a new web/mobile product, improve an existing application, or add AI capabilities, send me a message with your requirements. I’ll help you understand the best technical approach and the fastest practical path to production.