Matt Mackay
Software Engineer at Robinhood Financial, LLC
Old Toronto, Ontario, Canada
Summary
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RockstarMatt Mackay is a software engineer with 11 years of experience specializing in developer experience and Bazel build engineering, based in Old Toronto. He contributes to high-profile open-source build tooling—most notably Bazel—where he improves documentation, flags metadata, logging hygiene, and feature behavior to make builds more maintainable and automatable. His work spans backend, DevOps, and package-management aspects, including Python and NodeJS rules, wheel extraction refactors, runfiles/path handling, and tooling for long-argument execution and stdout/stderr capture. Colleagues rely on him to untangle build-system complexity and deliver pragmatic, test-covered enhancements that help teams scale their CI/CD and packaging workflows.
11 years of coding experience
Stackoverflow
1,309reputation
61kreached
25answers
0questions
Github Skills (29)
javascript10
python10
build-system10
java10
javas10
starlark10
bazel10
pip10
nodejs10
documentation10
testing9
build-automation9
rollupjs9
protobuffer9
protobuf9
Programming languages (10)
Github contributions (5)
bazel-contrib/rules_nodejs
Apr 2019 - Nov 2022
NodeJS toolchain for Bazel.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:211 reviews, 211 commits, 389 PRs in 3 years 7 months
Contributions summary:Matt implemented a Rollup JSON plugin and added necessary dependencies for it within the rules_nodejs project. They also made changes to handle path expansions within the runfiles and added functionality to write long arguments to a file, further enhancing the binary execution capabilities. The user also contributed to the example Angular application by adding prerendering functionality. Lastly, the user added support for capturing standard output/error and also added tests for these new functions.
bazeljavascriptstarlarknodejsrules-nodejs
bazel-contrib/rules_python
Mar 2021 - Jan 2023
Bazel Python Rules
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:65 reviews, 17 commits, 40 PRs in 1 year 10 months
Contributions summary:Matt contributed to the Bazel Python rules by implementing features for environment variable handling in `pip_repository` and `whl_library`. They also refactored code related to wheel extraction and updated documentation. Furthermore, the user made changes to the Gazelle configuration and version management within the repository. Their work demonstrates involvement in both build system and package management aspects of the project.
pythonpypibazelpipstarlark
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