Gary Roumanis
Senior Staff Engineer Manager at Google
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolGary Roumanis is a Senior Staff Engineering Manager with 11 years building and scaling developer platforms and teams, currently leading an 80+ engineer organization at Google focused on web and multiplatform frameworks that power Search, YouTube, Maps, Ads and Gemini. He combines hands-on systems work—contributions to Dart, AngularDart, Flutter DevTools and build tooling—with high-impact managerial experience growing and distributing teams across multiple hubs. His recent work emphasizes modernizing stacks to accelerate agentic workflows, cut startup and jank latency via Wasm/runtime innovations, and enable next-generation AI experiences. Gary has a strong performance and tooling pedigree, having driven >35% page-load improvements that materially increased revenue and slashed edit-refresh times by up to 75%. Based in Seattle, he brings a rare blend of low-level compiler and build-system expertise plus product-aware platform leadership. Outside management, his open-source contributions to foundational projects in the Dart/Flutter ecosystem signal ongoing technical depth and curiosity.
11 years of coding experience
14 years of employment as a software developer
Bachelor of Science, Joint honours in Mathematics and Computer Science, Bachelor of Science, Joint honours in Mathematics and Computer Science at McGill University
English
Stackoverflow
626reputation
204kreached
7answers
16questions
Github Skills (34)
debugging10
programming-language10
debug10
angulardart10
flutter-apps10
testing10
test-framework10
build-system10
ui-design10
uid10
compiler-design10
sdk10
front-end-development10
browser-testing10
flutter-game10
Programming languages (7)
Github contributions (5)
dart-lang/test
Mar 2017 - Mar 2021
A library for writing unit tests in Dart.
Role in this project:
Back-end & QA Engineer
Back-end & QA EngineerContributions:41 releases, 51 reviews, 109 commits in 4 years
Contributions summary:Gary primarily contributed to the testing infrastructure and core functionalities of the Dart testing library. They focused on improving test coverage and fixing issues related to browser testing, including killing browser processes and handling test suite loading. The user also implemented features like test retries and solo test runs, enhancing the testing capabilities. Additionally, the user updated code formatting and fixed bugs related to stack trace handling.
testingdart2dartunitunit-tests
dart-lang/build
Apr 2018 - Nov 2022
A build system for Dart written in Dart
Role in this project:Backend Developer
Backend DeveloperContributions:1 release, 15 reviews, 109 commits in 4 years 8 months
Contributions summary:Gary primarily worked on improving the build system's functionality and reliability. Their contributions included implementing a whitelist feature for build configurations and factory logging improvements. They also addressed and fixed build-related issues, enabling features like asset deletion in PostProcessBuilders. These changes focused on core build processes and the build process itself.
dartbuild-systemflutterconventionsdart-build-system
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