xxii · ix · mmxxvi

Hello, again

I codify contracts between systems for a living, in Rust and Python; and once spent a decade chasing where the antimatter went.

Senior software engineer at PactFlow (SmartBear). Open source contributor to pact-python,tikz-feynman, rust-skiplist, and more.

Previously: data and cloud engineering at KPMG, and a PhD in theoretical particle physics.

The year in code

4119 commits, 593 PRs, and 209 issues across 34 repositories.

Sep 2025 — Sep 2026
Most of what I make is open. The grid below is the truthful version of a résumé — public, dated, and dense in the parts where I was paying attention.

Latest commits

pact-foundation/jest-pactdocs: describe the prepare no-op while a release is in flight1d
pact-foundation/jest-pactchore(ci): drop the release-pr environment1d
pact-foundation/jest-pactchore: let breaking changes bump the major version1d
pact-foundation/jest-pacttest: drop the release script unit tests1d
pact-foundation/jest-pactchore(ci): skip the test jobs on draft pull requests1d
pact-foundation/jest-pactdocs: describe version bumps, setup prerequisites and Node floor1d

Latest issues & PRs

JP-Ellis/borrow-checker[issue · open]
Residual loads run once per in-set account on a subtree scope1d
JP-Ellis/borrow-checker[issue · open]
Gross stats double-count intra-subtree transfers1d
pact-foundation/jest-pact[PR · merged]
chore(ci): release through a git-cliff release PR1d
pact-foundation/jest-pact[PR · merged]
chore: rebase Renovate branches only on conflict1d
Selected projects
pact-pythonOSS · libraryPython bindings for Pact, rebuilt over a Rust FFI core. The version most pact-python users actually reach for.↗ github
tikz-feynmanOSS · LaTeXA LaTeX package for typesetting Feynman diagrams with TikZ; adopted across particle physics with 400+ academic citations.↗ github
rust-skiplistOSS · librarySkiplist data structure implementation in Rust.↗ github
↗ All projects