Engineer · I own the outcome
Sites, apps & tools running live.
I'm Ondra Linek. I build backend systems in Go and native apps for Apple platforms in Swift. This is a map of everything I run — the live sites, the apps, and the code behind them.
01 — On the web
Sites
Static sites served from a single VPS, built with Hugo or plain HTML and deployed from git. No CMS, no database, no tracking.
- kcna.ondralinek.cz Novinky z KLDR An archive of 1,040 KCNA news items moved from Blogger to Hugo. Every original URL is preserved and images are mirrored locally, so the site depends on nobody.
- go.ondralinek.cz Jazyk A Czech blog about Go from its early years: language internals, tooling, testing and a serial written for root.cz. Kept online as an archive.
- vdv.ondralinek.cz VDV Live The product site for VDV Live in Czech and English — what the app does, privacy, support and the App Store link.
- stats-workout.ondralinek.cz StatsWorkout The product site for StatsWorkout: features, privacy and support, in English and Czech, with the same dark, chart-driven look as the app.
- me.ondralinek.cz Ondra Linek — CV The long version: experience, services and skills, plus a contact form. Plain HTML, versioned in git and deployed by a systemd timer.
02 — Apple platforms
Apps
Native software for iPhone, iPad, Mac and Apple Watch. Swift, SwiftUI, and whatever framework the job actually needs.
StatsWorkout
iOS · iPadOS
Apple Health activity, summarised from a day to a year.
Steps, distance, elevation, exercise time and workouts become week, month, quarter and year statistics — with charts you can zoom into, workout routes and splits, and no data leaving the device.
Stitch
macOS · iOS · iPadOS
Paste a screenshot, mark it up, copy it back.
A Skitch-like annotation app in one codebase for Mac and iPad/iPhone. Paste one image, add arrows, text, shapes, marker or stamps, crop it, then copy or save as PNG — nothing else, by design.
Wriggler
iOS · iPadOS
A ZX Spectrum maze classic, loose on iOS.
A port of the ZX Spectrum maze game: 244 rooms, eight-direction movement, doors and objects to carry and swap. The simulation is a separate, unit-tested core; SpriteKit only draws it.
03 — Open source
Code & tools
Small, focused utilities released under permissive licences. Everything else is on GitHub.
glutton
GoA tiny HTTP server that accepts any payload and stores it — to the filesystem or PostgreSQL, with token auth, TLS and Docker examples.
spettrum
CA Z80 and ZX Spectrum emulator that renders the ULA output as Unicode blocks and braille characters, right in the terminal.
picoGal
JavaScriptA tiny jQuery gallery: point it at a container of images and it turns them into a lightbox.
04 — About
About
I'm a software engineer from Czechia. I have spent the last decade building Go backends — internal platforms, onboarding, billing, support tooling and automation — and I build native apps for Apple platforms in my own time.
I take systems from idea to production and stay responsible for them: architecture, implementation, operation and the decisions in between. In the age of LLMs and agents, writing code is the easy part — knowing what to build, keeping it correct and standing behind it is the job.