Bastien Billey
Senior product engineer in France, working remotely across Europe
I help small teams design and build web products, from the first product decisions to the interface, backend, and real-time systems. My recent work includes trading tools and multiplayer games.
Get in touch- Based
- France · remote Europe
- Experience
- 10+ years working remotely
- Core
- React · TypeScript · Node.js · PostgreSQL
- Open to
- Permanent role or focused contract
Product and full-stack engineer
Trading, rewards, and real-time games
I rebuilt the trading interface and design system, shipped multi-chain rewards, and now own the product experience, frontend, and real-time server for Arcade.
- Trading UX
- React
- TypeScript
- Node.js
- Colyseus
- Redis
Product and full-stack engineer
Rebuilding the tournament platform
I rebuilt the interface and helped replace a brittle external tournament core with owned backend jobs, FACEIT integration, on-chain payouts, and recoverable player state.
- Next.js
- NestJS
- PostgreSQL
- FACEIT
- Solidity
- Background jobs
What I work on
I am most useful when a product needs one person to keep the user experience and the implementation connected.
- Product
- Discovery, scoping, interaction design, onboarding, analytics, and the decisions between them.
- Interface
- Dense responsive products, design systems, live feedback, complex state, and mobile surfaces.
- Systems
- APIs, PostgreSQL, WebSockets, background jobs, Redis, third-party services, and blockchains.