Hi, I'm Mattias Geniar!
I'm a business owner, developer, Linux sysadmin, public speaker & blogger.
I build and run independent software products.
You can follow me on X as @mattiasgeniar.
What am I working on?
I'm building independent Software-as-a-Service products.
- Oh Dear: all-in-one website monitoring
- Give Twice: donate to charity while shopping online
Latest blogposts
Here's what I've been writing about lately.
- The backup SSH daemon I run before every do-release-upgrade
- AI is a confidence booster
- Transcribing my old podcast locally with open-source AI
- Configuring Varnish on systemd in 2026: drop-in overrides, not varnish.params
- Debugging cookie stripping in Varnish: client vs backend request in 2026
There's plenty more to read if you're interested.