Oscar Molnar

Staff Software Engineer · Coventry, UK

Tell me about a software problem and I will probably spend my weekend fixing it. During the week I work at Genio, where I do everything from full-stack web to mobile to infrastructure. The harder the problem, the more fun I have solving it and unblocking people. Sometimes I blog about how I fix those problems.

Before Genio I worked at Brandwatch, where amongst other things I focused on a company-wide UI library, and at Jaguar Land Rover, where I did VR and AR work, including some factory visualisations I am proud of. Along the way I also lectured C++ game engine development at Birmingham City University, my alma mater.

You can find me managing a 2,000-member Discord server dedicated to Unix-like operating systems, working on my YouTube channel (150k views and counting), taking photos in nature, or hyperfocusing on my homelab.

github linkedin email

lately

selected work

dotfiles

Every machine I own, from my NixOS desktop to the GPU server running local LLMs, comes out of this one Nix flake.

nix · nixos · nix-darwin
scriptanchor

I wanted to pin my server logs around the room in the Vision Pro, so I made an app that does that. It's on the App Store.

swift · swiftdata · visionos
advent of code

I do this every year, every time in a new language. The last two Decembers were Gleam and Kotlin, all stars both times.

gleam · kotlin · 9 more
button presser

My night light needs its button pressed three times to get to the brightness I like, so I made a tiny board that does the pressing for me.

c · kicad · attiny85
1password × runelite

I got tired of typing my RuneScape password every login, so I made RuneLite pull it from 1Password instead.

java · plugin-hub
hop

Lets me run a bunch of Claude Code agents at the same time without them stepping on each other. Every branch gets its own worktree and tmux session.

go · tui · nix flake

Older experiments from my student years (2015-2018) live in the archive: games, VR demos, tutorials.