Hi, I'm Himanshu 👋
Software Engineer — personal portfolio of Himanshu Jain
I take products from zero to shipped — web, mobile, backend, payments, and on-chain.

Currently at GastroSmart. Before that, founding engineer on a Web3 ticketing platform — I built the web app, organizer dashboard, iOS scanner, and the on-chain minting pipeline.
Selected Work
Products I've owned end-to-end — two, in depth. Not a pile of clones.
Mintix
Built the product end-to-end — turning event tickets into Solana NFTs, with payments, seat mapping, and a mobile check-in app.
Internal Work-Management Platform
Designed and built an internal work-management tool from scratch — flexible custom fields, permissions, and real-time collaboration.
Experience
Internship → founding engineer → full-stack product work.
Software Engineer·GastroSmart
Jan 2026 — PresentFull-time·Remote- –Building full-stack product features for a production food-catering platform.
- –Working across Nest.js APIs, a PostgreSQL/Drizzle data layer, Redis, and the Next.js app.
Next.jsNest.jsPostgreSQLRedisDockerFounding Engineer·Mintix
Dec 2024 — Jan 2026Full-time·Remote- –Sole engineer — built the web app, organizer dashboard, React Native iOS scanner, and backend from scratch.
- –Designed the on-chain minting pipeline (Solana + Metaplex) that turns each ticket into an NFT.
- –Wired Stripe payments end-to-end into the ticket purchase → mint flow.
- –Shipped the full ticketing flow — purchase, seat selection, NFT minting, and mobile check-in — ahead of the company's launch.
Frontend Developer Intern·Hexleap
Apr 2024 — Jan 2025Internship·Remote- –Built dashboards and marketing/landing pages from scratch as a frontend developer.
- –Focused on reusable component architecture and smooth, considered interactions.
Next.jsReact QueryTailwindFramer MotionFreelance — Full-stack Engineer
Jan 2024 — PresentFreelance- –Built an internal work-management platform — a flexible, ClickUp-style workspace — for a Singapore-based company.
- –Owned it full-stack: a flexible custom-field data model, permissions, and real-time updates.
- –Delivered production features across international client projects, alongside my full-time roles.
Consistency
The last year on GitHub — private work included.
Stack
Tools I reach for. Filled = daily driver · outline = worked with.
A bit about me
I care about owning a product end-to-end — auth, payments, data models, the mobile build, and the deploy included.
Most of what I've learned came from figuring things out myself — unfamiliar codebases, production bugs, infrastructure problems, and features with no Stack Overflow answer waiting. Lately I've been deep in backend-heavy product work.
Let's build something
Open to full-time and contract roles. The fastest way to reach me is email — I read everything.