Nirav S.
Senior Full-Stack AI Engineer | Python, Node.js, React | RAG, LangGrap
I build full-stack SaaS products and AI features that ship, not just demo well, most of it building booking platforms, CRMs, and data-heavy dashboards that businesses run on every day. My backend work splits between Python (FastAPI, Django) and Node.js (NestJS, Express), with React and Next.js on the front. Lately that's meant production AI: a multi-agent CRM copilot built on LangGraph, RAG chatbot backends with vector search (pgvector, Pinecone), and an MCP server with dynamic tool loading secured via OAuth 2.1. Before the AI wave, I spent years on the fundamentals: a vacation-rental SaaS handling bookings, availability, Stripe payments, and smart-lock automation (Rentals United, Seam); healthcare and EdTech frontends; microservices on AWS and GCP with Docker, Kubernetes, and GitHub Actions. How I work: - Quick discovery call or API spec review within 24-48 hours - Clear scope and milestones, no scope creep surprises - Measurable targets, for example latency and error-rate goals - Weekly demo with reviewable Git history - Handover docs and runbooks so you're never stuck without me I've delivered measured wins, like 50% solved user flow, work spans Healthcare and EdTech, also ERP, real time dashboards. Role based admin, Audit trails and compliance built in. Availability: 30 to 40 hrs per week. I've worked with planned US and EU overlap. Fixed price or T&M. Send the current bottleneck and I'll reply within 24 hours with a clear plan and timeline.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $9.9k
Billed in all: $224,951$225k
$9.9k in the last 6 months
Across 23 contracts
Earnings, last 30 days
Skill rankings: Top 6% in ExpressJS
Ranked by MRR among everyone on Upwork with the skill.
- #26NestJS Development248 freelancers · 🇮🇳 #5Top 10%🇮🇳#5 of 56
- #30Material Design451 freelancers · 🇮🇳 #9Top 7%🇮🇳#9 of 128
- #78Stripe API698 freelancers · 🇮🇳 #21Top 11%🇮🇳#21 of 155
- #101Jenkins1,177 freelancers · 🇮🇳 #21Top 9%🇮🇳#21 of 339
- #347NestJS3,757 freelancers · 🇮🇳 #66Top 9%🇮🇳#66 of 638
- #363ExpressJS5,651 freelancers · 🇮🇳 #88Top 6%🇮🇳#88 of 1,371
- #442Git5,766 freelancers · 🇮🇳 #65Top 8%🇮🇳#65 of 945
- #529Tailwind CSS6,978 freelancers · 🇮🇳 #102Top 8%🇮🇳#102 of 1,209