Adam Gastineau

Vancouver, Washington, United States

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Summary

🤩

Rockstar

Adam Gastineau is a Senior Software Engineer with 13 years of experience building polished front-end experiences and scalable back-end systems, currently at Microsoft in Vancouver, WA. He blends a strong product sensibility—having led UX-focused projects like Azure Data Explorer dashboards and component testing UX at Cypress—with deep systems work, contributing to the Rust compiler to add visionOS support. Pragmatic and curious, Adam champions design systems, performance improvements (notably modernizing Loop Tables and test runners), and mentors teams shipping public-facing developer tools. An active open-source contributor, his work touches high-profile projects such as Cypress, Playwright, and rust-lang, where he improves tooling, UI, and platform compatibility. Outside mainstream stacks he pursues retrocomputing, hardware description languages, and advanced type systems, reflecting both creative tinkering and a taste for low-level rigor. Browse his ongoing projects on GitHub (agg23) to see a mix of UX polish and systems-level contributions.

13 years of coding experience

Stackoverflow

Stats

81reputation

6kreached

2answers

9questions

Github Skills (40)

javascript10

testing10

ui-design10

uid10

lang10

compiler-compiler10

component-testing10

front-end-development10

compiler10

playwright10

rust10

react10

mstest9

teste9

typescript9

Programming languages (23)

MDXC#JavaC++RustCScalaVue

Github contributions (5)

cypress-io/cypress

Feb 2021 - May 2021

Fast, easy and reliable testing for anything that runs in a browser.

Role in this project:

Front-end Developer

Contributions:186 reviews, 294 commits, 48 PRs in 2 months

Contributions summary:Adam primarily focused on component testing improvements and fixing related issues within the Cypress project. They addressed linting rules for component testing, fixed React hooks, and made several changes to the UI, including modifications to the selector playground and header components. Additionally, the user updated various files within the runner-ct directory to implement specific functionality related to component testing.

testingcypressend-to-end-testingangular-testing-librarycomponent-testing

microsoft/playwright

Mar 2020 - Nov 2025

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Role in this project:

Front-end Developer

Contributions:4 releases, 135 reviews, 259 PRs in 5 years 8 months

Contributions summary:Adam primarily contributed to the Playwright Trace Viewer UI, fixing issues with the network log and the display of canvas content in snapshots. They cleaned up and refactored the settings component for shared use and added time information to the Call and Network tabs. The user also added a dialog UI for the upcoming settings menu and made improvements to the display of action context within the trace viewer, showing the context of locator actions and keyboard/mouse interactions.

automationchromiumfirefoxplaywrighttesting

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