Software engineer in Wellington, NZ
Backend and full-stack engineer building reliable platform and product systems.
I'm Reilly Oldham. I work across backend systems, observability, developer tooling, and product interfaces, with a focus on software that is reliable, debuggable, and easy to operate.
Latest from me
Catchy for Wear OS, bridging TWAs and the Wearable Data Layer
Building the Catchy Wear OS companion app, with synced favourites and live public transport data on your wrist.
May 24, 2026Wear OSKotlin
Read latest postNovember 21, 2025
Deriving cache write tokens from OpenRouter
How to recover Anthropic cache write tokens from OpenRouter using cost-based backsolving.
Read postOctober 23, 2025
Just One More Browser I Swear
A look at the browsers that shaped my workflow and where the future of browsing is headed.
Read post