Jimmy Hwang
Open to senior & founding-engineer roles
Senior Software Engineer  ·  Berlin & remote

Full-stack,
AI-native,
founder-built.

I build product end to end. Frontend, backend, infrastructure, and increasingly with AI agents as a real part of how I ship. I run my own product, so I think like an owner, not a ticket-closer.

Built solo

PartyX

live at partyx.info

An event platform for underground electronic music. Techno nights, raves, club shows, the promoters most apps ignore. I built the whole thing solo: discovery, city pages, guestlists, ticketing, door and staff workflows, payments, refunds, organizer tools, and an ingestion pipeline.

I ran the first version for two years in Paris, then rebuilt it from scratch in 2024 and 2025 on Next.js, NestJS, Supabase and Vercel. The first version took me years. The second is cleaner and shipped faster, built leaning hard on AI as a real part of how I design.

10k+
events indexed
8
cities
1
engineer (me)
Open the product
How I work

Ownership over titles

I'm at my best with high ownership. Small teams, ambiguous problems, production constraints, ship it anyway. I'd rather be the person who quietly makes the hard thing work than the loudest one in the room.

Working with AI changed how much one engineer can carry. I design codebases so an agent can move through them as easily as I can, which means I ship more, with less, and keep the quality up.

Now / WiTTRA Networks, Stockholm

Full-stack engineer on an industrial IoT positioning platform deployed in the field, including Arlanda airport and sites run by ArcelorMittal and Eramet.

Much of the job is turning unclear operational requirements into software that holds up in production: features across the stack, debugging tools, customer-facing workflows, and architecture decisions that have to survive real customers.

Stack
TypeScript Next.js NestJS Node.js PostgreSQL Supabase Prisma Redis Vercel Cloudflare GitHub CI/CD AI-assisted engineering