Full-stack developer from Prague, Czech republic 🇨🇿
$ whoami
Sebastian Pravda — full-stack developer
$ cat /proc/self/stack
typescript · go · rust
$ sudo make coffee
make: *** No rule to make target 'coffee'. Stop.
$ ls ~/now
flagfish/ one Go binary, provable anti-cheat
posel/ native API client — your requests are files
$ _Self-hosted CTF platform in one Go binary — race-free scoring, a rewindable scoreboard, and anti-cheat that catches flag sharing.
Fast, GPUI-based native API client for REST, GraphQL & tRPC. Requests are plain files you commit to git — no Electron, no account, no cloud. Built in Rust.
| Daily | |
| Server | |
| Client | |
| Infra | |
| Proof |



