Senior Full Stack / Platform Engineer — Dallas, TX.

The part that's hard to get across in a bullet list: being the person who can hold the whole path in their head — local, staging, production, front to back — at 11pm, when something is broken and the fix has to be small enough to be safe.

Work history is on LinkedIn. Most of my recent work is in private repos; what's public is below, and each one has a writeup explaining why it exists.

Numbers should be derived, not asserted. The thing I keep building is the model that shows its work. page-load-anatomy doesn't tell you a cold TLS 1.2 connection is slow — it counts the seven round trips and puts each one in a test. If a README claims it, the test suite should be able to prove it.

Prefer the boring mechanism. My site rebuilds itself when its content changes. WordPress's free plan can't install a webhook plugin, so rather than storing state, a cron job compares the fingerprint WordPress reports now against the one baked into the live deployment. Nothing to cache, nothing to go stale, and a manual redeploy self-corrects. The deployed half is public — check it yourself:

curl -s https://www.luke-mac.com/content-fingerprint.json

The subtle bug is usually at a boundary. That fingerprint gets computed twice: once in TypeScript at build time, once in bash inside the Action. They have to agree byte for byte, which means the shell sort needs LC_ALL=C to match JavaScript's .sort(). Two implementations of "the same" hash that silently disagree is exactly the sort of thing that pages you at 2am.

Guard the repo, not just the code. This profile is public, so it's set up to refuse anything that isn't a README. .gitignore is deny-by-default, scripts/guard.sh blocks credential shapes and a private denylist — as a pre-commit hook and as required CI — and main takes no direct pushes. The denylist itself is never committed: a public denylist is a public index of precisely which words are sensitive.

• page-load-anatomy — a deterministic model of a browser page load. Real protocol arithmetic, asserted in tests. Change the RTT and watch what moves downstream.
• rental-property-analyzer — hold-vs-sell modelling in the browser. Exports an Excel workbook where every projection is a live formula, not a pasted value.
• mercy-networks — natural-language search connecting people experiencing homelessness, and the caseworkers serving them, to shelters and housing programs.
• neural-tools — published npm toolkit for scaffolding MCP servers and AI agents, with evals by default.