Dan Beam is a Senior Staff Software Engineer with 16 years of experience building high-traffic, production-grade web platforms and developer tooling from startups to Google and Airbnb. He’s led cross-functional teams and technical initiatives—rewriting Airbnb’s Trips page off a deprecated platform, modernizing large test suites (chai/sinon → jest) via codemods, and owning web platform concerns like CI, observability, and experimentation. Comfortable across front-end and full-stack domains, he’s contributed to notable open-source projects (Polymer, Jest codemods, YUI Compressor) and led visible Chrome UI work such as dark-mode reskins and the New Tab page. Known for pragmatic technical leadership and a taste for refactors that reduce long-term debt, he pairs hands-on implementation with on-call responsibility for critical systems. Based in Los Angeles, he quietly balances deep engineering chops with a habit of shipping solutions that improve developer experience and product reliability.
16 years of coding experience
18 years of employment as a software developer
Bachelors, Computer Science, Bachelors, Computer Science at California State University-Fullerton
Contributions summary:Dan primarily contributed to optimizing the YUI Compressor, focusing on CSS minification. Their work included adding minification for various zero-length unary terms and porting these optimizations to the JavaScript version. They also introduced lowercasing of various CSS directives and functions for improved compression and updated tests to reflect the changes. The user's contributions involved both Java and JavaScript code.
Codemods for migrating to Jest https://github.com/facebook/jest 👾
Role in this project:
QA Engineer / Test Automation Engineer
Contributions:9 reviews, 8 commits, 13 PRs in 2 months
Contributions summary:Dan primarily contributed to the development and maintenance of codemods for migrating to Jest within the `jest-codemods` repository. Their work focused on converting and refactoring existing testing code from libraries like Chai and Sinon to Jest equivalents. This involved modifying test files, implementing transformations for assertions, and updating type definitions to ensure compatibility with Jest's testing framework, enhancing the automated testing capabilities of the project.
avacodemodjesttestingfacebook
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Dan Beam - Senior Staff Software Engineer at Affirm