Billy Lynch
Principal Software Engineer at Chainguard
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolBilly Lynch is a Principal Software Engineer with 13 years of experience building and securing cloud-native CI/CD and supply-chain tooling, currently based in New York and leading engineering at Chainguard. He brings deep backend and DevOps expertise from Google and prominent open-source projects—contributions to TektonCD, Sigstore/cosign, and go-github demonstrate hands-on improvements to build automation, code signing, and API robustness. Billy blends systems design with practical toolsmithing: refactoring context propagation, improving test and dependency hygiene, and adding credential caching and OIDC integrations to real-world security tooling. As a TektonCD governing board member and frequent maintainer, he pairs governance with code-level ownership, often tackling subtle interoperability and configuration issues that improve developer experience and security posture. Notably, his work includes enhancing supply-chain security primitives used by many cloud-native projects, reflecting a focus on auditable, reproducible pipelines.
13 years of coding experience
14 years of employment as a software developer
Bachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at Rutgers University
Stackoverflow
136reputation
14kreached
3answers
0questions
Github Skills (46)
dependency-management10
context-manager10
git10
kubernetes10
apidoc10
scripting10
command-line-interface10
key-management10
oid10
tekton10
unix-timestamp10
context-api10
signing10
cicd10
security10
Programming languages (16)
Github contributions (5)
sigstore/gitsign
Apr 2022 - Jan 2023
Keyless Git signing using Sigstore
Role in this project:
Backend Developer & DevOps Engineer
Backend Developer & DevOps EngineerContributions:5 releases, 134 reviews, 89 commits in 9 months
Contributions summary:Billy primarily contributed to the `sigstore/gitsign` repository by cleaning up code and introducing new features. Their work involved enabling OIDC providers, filtering Rekor search by public key, and enabling file-based configuration. They also implemented a credential caching system to improve efficiency. Furthermore, the user refactored sign/verify processes and enhanced verification output.
keylesssigningsigstore
google/go-licenses
Nov 2019 - Dec 2021
A lightweight tool to report on the licenses used by a Go package and its dependencies. Highlight! Versioned external URL to licenses can be found at the same time.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 60 reviews, 7 commits in 2 years 2 months
Contributions summary:Billy primarily contributed to the `go-licenses` project by implementing new functionalities and refining existing ones. They added a "check" command for license verification and enhanced command-line argument handling to accept multiple input paths. Furthermore, the user addressed a spelling inconsistency ("LICENCE") in a test, and fixed file permissions when saving license information. These changes demonstrate a focus on improving the tool's usability, robustness, and adherence to best practices.
golanggo-packagedependencieslicenseshighlight
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