Mohsin S.

I build AI-powered SaaS products and business automation systems, primarily with Node.js, from backend APIs and data workflows to polished web applications and production deployment. I’m a senior software engineer with 13+ years of experience, almost 100 completed Upwork jobs, and Top Rated Plus status. I work with founders and teams to launch new products, add AI to existing software, automate manual processes, or take ownership of an established codebase. What I can build • AI SaaS products, RAG applications, document processing, and AI agents • Business workflow automation connecting APIs, CRMs, documents, and internal tools • Full-stack web, mobile, desktop applications, dashboards, marketplaces, and REST APIs • Automate backend workflows with AI, n8n, Make, and custom pipelines • Real-time video and media products, including streaming, processing, and clipping • Deploy to Vercel, AWS, VPS and set up CI/CD so releases stop being an event Core technologies Primary: Node.js, NestJS, React, Next.js, React Native, Electron, TypeScript, PHP, PostgreSQL, Supabase, MongoDB, Redis, OpenAI, Claude, Gemini, WebRTC, LiveKit, FFmpeg, and n8n. Secondary: Python and FastAPI. You can expect clear communication, maintainable structured code, honest technical recommendations, and no surprises about timeline or scope. I can take a product from requirements through architecture, implementation, integrations, and deployment or join an existing team to improve and extend its software. Send me a short description of what you’re building, the problem it should solve, and what you already have. I’ll suggest a practical technical approach.