I'm Pintu Kumar, a full-stack + AI engineer in Mumbai (IST, UTC+5:30) with 3.5 years of experience. I build web apps and AI features for startups — agents and chatbots, voice apps, real-time dashboards, and full MVPs from idea to deploy. Open to freelance projects and full-time roles.
How I work: fixed scope before we start · weekly demos · clean handover with docs.
Email · LinkedIn · Portfolio · Upwork · Fiverr
- AI agents & chatbots — RAG, tool-calling, MCP servers, guardrails
- Voice apps & Alexa skills — real-time voice and custom skills
- Dashboards & internal tools — live data, auth, billing
- Full MVPs — idea to deployed product, with docs and handover
Fixed-price projects from $80; AI agents & chatbots from $90. Larger scopes are quoted after a short call.
| Project | What it is | Links |
|---|---|---|
| Interview Copilot | Real-time AI voice interview assistant — CV-grounded answers via NVIDIA Nemotron | Live demo · Code |
| MarketPulse | Alexa+ market-research skill — 12 MCP tools, AWS Bedrock, plus an agentic PayPal checkout loop | Live demo · Code |
| BlastRadius | Maps a repo into a code graph, hunts risky patterns, and traces the blast radius of a change | Live demo · Code |
| TokenTrace | Meters, audits, and bills every AI API call — drop-in proxy + dashboard with Stripe metered billing (demo needs a free sign-up) | Demo · Code |
| CivicLens | Community issue reporting with AI triage, department routing, and a public accountability map | Live demo · Code |
| SnapFix Studio | AI photo transformer — background removal, outpainting, upscaling (Cloudinary) | Live demo · Code |
| Ledger Sloth | Local-only CLI that categorizes bank statements, forecasts next month's spend, and flags the charge that doesn't belong — Gemma 3 + TabPFN, fully offline | Code |
| LiveDocs | AI research agent that compares libraries using live documentation (SerpApi) | Code |
Merged (6)
- OWASP/cve-lite-cli #1297 —
--jsonnow records cliVersion, scannedAt and the effective options, with a usage-capture + redaction design the maintainer called the bar for future work - OWASP/cve-lite-cli #1330 —
--debugemits one diagnostic bundle that's safe to attach (home-directory redaction) - json5 #407 — preserves native
JSON.parsebehavior when a reviver rejects a mutation (Reflect-based fix) - supabase/supabase-js #2789 — storage uploads no longer break when optional upload options are undefined
- tox-dev/filelock #880 — importing filelock raises clearly when a read-write lock module is missing
- Yashaswi-Anand/investor-tracker #1 — restored the
/allotmentpage and added multi-issue batch checking
Open PRs in review
- davidjesus516/cemurm #427 — static lint checks now also cover Node
.mjsbuild scripts (approved, awaiting merge) - tailwindlabs/headlessui #3909 — preserve refs on frozen children
- knex/knex #6549 — reject the transaction outcome when
COMMITreturnsROLLBACK - mochajs/mocha #6427 — handle null-prototype objects in
emptyRepresentation - better-auth/better-auth #11872 — allow opting out of the https issuer rewrite
- Weekend Agent Challenge: oops — my AWS Builder Center article on building a Bedrock-powered CLI that turns cryptic error messages into plain-English fixes.
- Giving my research agent a memory: an S3 evidence archive — my AWS Builder Center project on giving the LiveDocs agent an S3 evidence archive, so every cited claim keeps its source.
- AI Engineer for Developers Associate — DataCamp (Oct 2025 – Oct 2027)
- SQL Associate — DataCamp (Oct 2025 – Oct 2027)
- API Design in Node.js, v5 — Master.dev (Aug 2026)
- React Performance, v2 — Master.dev (Sep 2026)
- Claude Code — Master.dev (Sep 2026)
More certifications
- CCEP — Certified Cybersecurity Educator Professional — Red Team Leaders (Oct 2026)
- Future AWS Agentic AI Business Professional — Udacity (Aug 2026)
- AWS AI Practitioner Challenge — Udacity (May 2026)
- Introduction to MongoDB — Master.dev (Sep 2026)
- Front End Developer — Udacity (Dec 2022)
- AI Associate — DataCamp
- Full Stack Developer — Udacity
- MERN Stack Developer — Coding Ninjas
Education: BTech, Computer Science and Engineering — Kurukshetra University (2018–2022)
