Work

# Case studies, in detail.

Six engagements I’m proud to put my name on, with the actual problem, what we tried, and what shipped.

- ## A remote build cache that turned 22-minute CI into 4 minutes

  2024 · Tech lead

  Designed and shipped the remote build cache that took our monorepo from a 22-minute median pipeline to 4 minutes, while staying within our existing GitHub Actions runners.

  Median PR pipeline 22 min → 4 min. Cache hit rate 71% sustained. ~$18k/mo of CI compute reclaimed.

- ## Quill: a tiny config-loader nobody asked for that 2.4k people now use

  2023 · Author and maintainer

  A 4kb TypeScript library for loading typed configuration from env vars + JSON/YAML overlays, with a test mode that catches missing keys at build time. Open source, MIT, no telemetry, no opinions about your runtime.

  2.4k weekly downloads. 38 contributors. Used in production at three companies I know of and probably more I do not.

- ## Cutting p95 latency 40% by moving auth to the edge

  2022 · Senior engineer, infrastructure

  Moved session validation and per-request authorization to a Cloudflare Worker tier in front of the origin. Same correctness contract; far less work for the application layer.

  Authenticated p95 latency 312ms → 187ms. p99 cut by 38%. Origin egress dropped 22% as a side effect.

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