Architecture / Performance2026
Geospatial job search
Tracing a production map search from lookup speed to startup behavior and query plans.
- Scope
- Backend / PostgreSQL / API / performance
- Problem
- A fast local index created warm-up and operational complexity.
- Outcome
- Database-backed queries with fewer startup dependencies.
Read engineering note →Mobile / Performance2026
Production mobile performance
Profiling startup, rendering and query behavior in a production React Native app.
- System
- React Native / Expo / TanStack Query
- Focus
- Startup paths, unnecessary renders and device-specific bugs.
- Outcome
- A key loading path improved from roughly 10 seconds to 4 seconds.
Agents / Infrastructure2026
Durable agent infrastructure
Coding-agent infrastructure built around recoverable execution.
- Scope
- TypeScript / XState / PostgreSQL / infrastructure / evaluation
- Decision
- Explicit state, bounded tools and durable checkpoints.
- Outcome
- Inspectable, reproducible and safer work on real codebases.
Read engineering note →