Will Cassella is a Senior Software Engineer in San Francisco with 12 years of experience designing high-performance systems, particularly at the intersection of computer graphics, game tools, and WebXR. He has shipped platform-level features at Google Chrome (video stack and WebXR), built cross-team tooling at Microsoft, and now works on Roblox Studio's builder tools and AI-driven material generation. A focused tester as well as engineer, he contributes to the widely used web-platform-tests repository, improving WebXR spec coverage and reducing flakiness in critical browser tests. Will blends systems-level performance thinking with product-facing graphics and tooling work, and often surfaces practical testing insights that catch subtle spec and interoperability issues before they reach users.
12 years of coding experience
9 years of employment as a software developer
Bachelor of Science (B.S.) Computer Science, Bachelor of Science (B.S.) Computer Science at Montana State University-Bozeman
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:
QA Engineer / Test Automation Engineer
Contributions:11 commits in 2 years 6 months
Contributions summary:Will primarily contributes to the testing framework of the Web Platform Tests repository. Their work focuses on implementing and modifying tests related to WebXR features, ensuring the correct behavior of features like reference spaces, session requests, and lighting estimation. The user's commits also involved updating test configurations and fixing flakiness in existing tests. A key area of their contribution is the creation and refinement of tests that cover various WebXR specifications.
Contributions:4 releases, 512 commits, 212 pushes in 5 years 11 months
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