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Hello, again

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

Senior software engineer at PactFlow (SmartBear). I help lead the open-source Pact Foundation and maintainpact-python; I also wrote tikz-feynman,rust-skiplist, and more.

Previously: data and cloud engineering at KPMG, and doctoral research in theoretical particle physics.

The year in code

5072 commits, 792 PRs, and 276 issues across 37 repositories.

Oct 2025 — Oct 2026
Most of what I make is open. Each square below is one day of my GitHub contributions over the past year.

Latest commits

pact-foundation/pact-swift-mock-serverchore: Bump libpact_ffi.version to pact_ffi-v0.5.1214h
pact-foundation/pact-gofix: derive the installer's temp file paths with path/filepath15h
pact-foundation/pact-gofix: install pact_ffi from the dist-built release archives16h
pact-foundation/mocha-pactchore: remove the unused FFI download script16h
pactflow/pact-msw-adapterchore: remove the unused FFI download scripts16h
pact-foundation/pact-swift-mock-serverchore: Check out the pact_ffi-v upstream tag16h

Latest issues & PRs

pact-foundation/pact-reference[PR · open]
fix(matching): RFC 9110 repeated-header matching (review PR for #568)10h
pact-foundation/pact-ruby-ffi[PR · open]
chore: download pact_ffi from the dist-built release16h
pact-foundation/pact-net[PR · open]
chore: download pact_ffi 0.5.12 from the dist-built release16h
pact-foundation/pact-python[PR · merged]
chore(ffi): download pact_ffi from the dist-built release16h

Selected projects

pact-pythonOSS · libraryPython bindings for Pact, rebuilt over a Rust FFI core. Downloaded over 1.3 million times a month.↗ github
tikz-feynmanOSS · LaTeXA LaTeX package for typesetting Feynman diagrams with TikZ; adopted across particle physics with 400+ academic citations.↗ github
rust-skiplistOSS · libraryA skip list for Rust.↗ github
↗ All projects