Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed
Fix the problems and pass the tests to improve the Gecko correctness
Work through code review with the relevant Gecko module owners and iterate to landing

🎯 Requirements

Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally
Solid Javascript and applying that language skill to write automated tests.
Proficiency in and experience developing software in C++.
Strong debugging skills in a mature larget codebase.
Comfort working in the open: public bugs, code review, and upstream landing.

🎁 Benefits

Prior contributions to Gecko or another major browser engine.
Familiarity with web standards and Web Platform Tests.

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