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
4490 commits, 715 PRs, and 260 issues across 34 repositories.
Most of what I make is open. Each square below is one day of my GitHub contributions over the past year.
Latest commits
JP-Ellis/borrow-checkerfix(e2e): depend on @types/node directly19h
JP-Ellis/borrow-checkerchore(e2e): type-check the e2e TypeScript in lint19h
JP-Ellis/borrow-checkerdocs(gui): lint bc-ui with its real features20h
JP-Ellis/dotfilesfix(mise): install eza and rbw with the cargo backend1d
JP-Ellis/dotfileschore(claude): disable away summary1d
JP-Ellis/dotfileschore(mise): install python from prebuilt binaries1d
Latest issues & PRs
JP-Ellis/borrow-checker[PR · open]
fix(bc-ui): keep the open register editor mounted across a refetch13hJP-Ellis/borrow-checker[PR · open]
fix: carry tags by ID on the wire so renames stop breaking edits17hJP-Ellis/borrow-checker[PR · open]
fix: net movement inside the scope on the dashboard flow cards17hJP-Ellis/borrow-checker[issue · open]
Editor chips show a renamed tag's old path until reload17hSelected 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
↗ All projects