Jatin S.

Senior Full Stack Engineer | AI/ML, LLMs & RAG | Python, React, Node

✅ Top 1% AI Engineer on Upwork ✅ $200K+ delivered in AI work ✅ All 5.00 ★★★★★ Feedback ✅ 100% Job Success ✅ 8,000+ hours delivered ✅ 10+ years building software I build production-grade full stack applications with deep AI/ML capabilities baked in. Whether that's a GPT-4-powered SaaS, a RAG-based document intelligence platform, or a multi-agent backend powering real business logic, I ship systems that actually run in production. My longest engagement: ~3,000 hours of full stack + AI development for a finance-industry client. Multi-year retention. 𝐓𝐡𝐚𝐭'𝐬 𝐰𝐡𝐚𝐭 "𝐬𝐞𝐧𝐢𝐨𝐫" 𝐦𝐞𝐚𝐧𝐬. 🎯 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 ✔ AI-Integrated Full Stack Apps: end-to-end products built with React/Next.js frontends, Python/Node.js backends, and LLM-powered features throughout ✔ LLM & Gen AI Features: GPT-4o, Claude, Gemini, function calling, tool use, structured outputs, and agentic reasoning layers ✔ RAG & Knowledge Systems: document chat, semantic search, and retrieval pipelines using Pinecone, Weaviate, and ChromaDB ✔ ML Model Integration: connecting trained models into production APIs, dashboards, and real-time pipelines ✔ AI SaaS MVPs: production-ready AI products designed for founders, shipped in 4–8 weeks ⚡ 𝐏𝐫𝐨𝐨𝐟 𝐈𝐭 𝐖𝐨𝐫𝐤𝐬 ☑️ AI Voice Bot for Sales & Client Onboarding (VocaPitch) ☑️ LegalTech AI Assistant - Streamlined law-firm workflows with document automation + agentic review. ☑️ InstaLetter.ai SaaS Platform - Team Lead — Full AI MVP delivery; ☑️ n8n & Agentic Workflows engagement — 5.0★: "Great communication and professional team. A++ guys." 🛠 𝐓𝐨𝐨𝐥𝐬 𝐈 𝐀𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐔𝐬𝐞 Python · FastAPI · Django · Node.js · Next.js · React · TypeScript · AWS · REST APIs · Claude (Anthropic API · MCP) · OpenAI · GPT-4o · LangChain · LangGraph · LlamaIndex · Pinecone · Weaviate · ChromaDB · Vector DBs · PostgreSQL · Docker · GitHub Actions Let's talk. I offer a free 30-minute discovery call where I'll map out the AI system you actually need or tell you honestly if I'm not the right fit. Most clients know within the first 15 minutes, whether we should work together. DM me with a one-line description of what you're building.