I build systems whose failures can be replayed: deterministic simulation testing, consensus, storage engines. London.
- moirae — deterministic simulation testing for distributed systems, in TypeScript. Every failure is a seed that replays byte for byte; open one in the studio.
- ananke — a distributed SQL database in Rust that runs under its own simulator. Its Raft layer holds its invariants across 10,000 seeded fault runs.
- openraft #2099 — a seeded, simulated runtime for openraft. It reproduces a real CI flake on 24 of 300 seeds, and seed 9 replays byte for byte. Open PR.
- mise #13035 — traced a false monorepo warning to its cause; the maintainer merged the fix the same day.