Jarek Hartman
Telecom and Cloud Architect
I design and deliver large-scale charging systems, cloud-native infrastructure, and automation pipelines. Systems engineering across telco platforms, from IN/VAS to modern cloud monetization.
Field notes on systems engineering, homelab and cycling
These are my notes on telco platforms, infrastructure work, home lab experiments, cycling and practical fixes learned in day-to-day engineering.
After the Cloudflare Pages detour, I tried Vercel. I wanted a host that felt “boring” in the best way: connect a repo, run Hugo, attach a …
I went into this with a lot of optimism. Cloudflare Pages looked like the perfect fit for a Hugo site: connect GitHub, hit deploy, and …
I wanted to run codex-cli in a real sandbox on macOS. The goal was simple: keep the tool useful, but stop it from touching anything outside …
Moving from WordPress to Hugo This site used to run on WordPress for years. It did the job, but it came with the usual baggage: upgrades, …
Books 100 Go Mistakes and How to Avoid Them - Teiva Harsanyi I keep this one near my desk. It’s a compact checklist of the mistakes I …
Intro I built this little Snake clone as a hands-on way to learn the Ebitengine (Ebiten) game loop in Go. It runs on a fixed grid with …