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I will develop full stack web, mobile and ai powered applications
Yash S
About this gig
Need a developer who can build the whole product, not just one piece?
I'm a Senior Full-Stack & AI Engineer with 8+ years building production web, mobile, and AI-powered apps currently with a US healthcare company building LLM-integrated mobile products.
What I bring:
- Full-stack: React.js, Next.js, Node.js, React Native, FastAPI
- AI/LLM integration: Claude, GPT-4, RAG, LangChain, AI agents
- Mobile apps with hardware integration (Bluetooth LE, real-time Firebase)
- CI/CD pipelines, 95%+ test coverage on critical work
- Healthcare-grade reliability and compliance-aware engineering
Recent work:
- AI therapy coaching app (Claude API + RAG), live on iOS/Android
- Multi-agent pipeline (LangChain + GPT-4) for clinical reporting
- 24+ shipped applications across healthcare, fitness, and community platforms
I don't just write code, I design systems. Whether you need a fast MVP, full production app, or AI features added to an existing product, I scope things properly upfront so there are no surprises mid-project.
Message me with your project details and I'll tell you honestly if it's a good fit before we start.
Get to know Yash S
Yash S
AI Engineer FullStack Software Engineer
- FromIndia
- Member sinceNov 2020
- Avg. response time4 hours
Languages
Gujarati, English, Hindi
I am a results-driven AI Engineer and Full-Stack Software Engineer with 8+ years of experience building production-grade applications. I specialize in LLM integration, AI agent design, and autonomous workflow systems. I have a proven track record of leading engineering teams and architecting scalable systems across healthcare and SaaS platforms.
My Portfolio
FAQ
What technologies do you specialise in?
React.js, Next.js, Node.js, React Native, FastAPI, and AI integration with Claude/GPT-4, including RAG pipelines and AI agents. 8+ years of full-stack experience, currently building production AI features for a US healthcare company.
Can you add AI features to my existing app?
Yes. I can integrate LLM-powered features like chatbots, RAG-based search, or AI agents into your existing codebase, whether it's React, Node.js, or another modern stack. Send me your repo or app details to scope it.
Do you provide the source code?
Yes, full source code is included in every package. I also provide setup instructions so you or your team can run and maintain the project independently.
What if I'm not sure exactly what I need yet?
No problem, message me with a rough idea of your project and goals. I'll ask the right questions and help you scope it before you order, so you only pay for what you actually need.
Do you offer ongoing support after delivery?
Basic bug fixes are covered during the revision period. For ongoing maintenance or feature additions after delivery, I'm happy to discuss a separate arrangement.
Can you work with my existing development team?
Yes, I regularly collaborate with in-house teams, follow existing code conventions, and document my work clearly for smooth handoff.
