b4r7x assembling

Bartek Wojtczak / personal site / 2026

Software, open source and independent work.

Frontend-first software engineer in Łódź. I build interfaces, Node.js systems and open-source tools.

not a template. built glyph by glyph.

index b4r7x..2026 + 10dz, pl + typescript / react + node.js - closed source status: active

Bartosz Wojtczak / software engineer

Interfaces, engines, open source.

Frontend first. I build interfaces, Node.js systems and open-source tools. After hours, I keep turning small side projects into larger side projects.

based
Łódź, Poland
primary
TypeScript / React
web
Next.js / TanStack Start
backend
Node.js / Fastify / Hono
services
Supabase / REST / WebSockets
terminal
Ink text-mode UIs
graphics
Three.js / GSAP / WebGL
independent
Tools, experiments, bad jokes

working principle / live system

Make the system legible.

If I cannot see what a system is doing, I eventually build an interface for it. That habit became editors, developer tools and small Node engines.

Auto / scroll-controlled

index / selected work

Current work.

Łódź, PL / usually online

Still here?

That is already more patience than most software gets.