Company: Devconnectplatform
Location:
Job Description:
Mozilla is seeking a Senior Contract Software Engineer to join the Firefox DOM Core team. You will design and run automated tests in JavaScript, contribute to Web Platform Tests, and help improve the health of the Session History area in Gecko.
You will fix failing tests, review code with Gecko module owners, and drive correctness and reliability across the engine. Strong debugging, C++ and browser-engine experience are essential for this senior role.
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Posted: November 1st, 2026