Work
Case studies & shipped products.
Client work written up as case studies — trade-offs included, not just the outcome. Plus the products I build under my own name.
Things I ship
My own products, in the wild.
Between contracts I build my own products and ship them. Not side projects — live apps, real users, running in production.
Wyszczaj.to
LiveWhere to pee in Poland.
A nationwide, community-driven map of public toilets and places to relieve yourself — find the nearest one, anywhere in Poland.
- Web
- Maps
- Geolocation
FramePicker
LiveThe perfect still from any video, picked by AI.
Drop in a video and let AI pull the sharpest, best-framed shots — turn a gym clip into a clean photo without scrubbing the timeline.
- AI
- Video
- Web
Case studies
CASE STUDY 01 · OPEN SOURCE · C++ / JSI / SIMD
Making base64 fast enough to disappear
Three pull requests to react-native-quick-base64 that took base64 off the flamegraph in a production React Native image pipeline — shipped in v3.0.0.
CASE STUDY 02 · FULL-STACK · EVENT SOURCING
A full event-sourced backend in ten days
A per-section applause API for the Software Mansion engineering guide — backend, a remark AST plugin, and a sendBeacon delivery path — designed, built, and shipped end-to-end in ten days.