Contract Software Engineer - DOM Core Firefox/Gecko

Mozilla
France, Germany, United Kingdom
Workplace: RemoteContractFunction: Software EngineeringSkills: ["Debugging","Code review","Collaboration","Working in the open","Upstreaming"]

Help the Firefox DOM Core team improve the health of the Session History area by writing and fixing Web Platform tests and Gecko mochitests. You’ll troubleshoot issues in a mature, large browser-engine codebase, collaborate through code reviews with Gecko module owners, and iterate changes to land upstream. The work focuses on improving Gecko correctness and increasing Session History test coverage.

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FursaFursa
Mozilla
Mozilla
18 hours ago

Contract Software Engineer - DOM Core Firefox/Gecko

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 12 hours agoStatus: Live

Job Summary

Help the Firefox DOM Core team improve the health of the Session History area by writing and fixing Web Platform tests and Gecko mochitests. You’ll troubleshoot issues in a mature, large browser-engine codebase, collaborate through code reviews with Gecko module owners, and iterate changes to land upstream. The work focuses on improving Gecko correctness and increasing Session History test coverage.
Location: France, Germany, United Kingdom
Workplace: Remote
Employment Type: Contract
Job Function: Software Engineering

Key Responsibilities

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

Key Requirements

  • •Substantial experience in a browser-engine codebase or in automating for a browser engine, ideally Firefox/Gecko.
  • •Strong JavaScript skills used to write automated tests.
  • •Proficiency in developing software in C++.
  • •Strong debugging skills in a mature, large codebase.
  • •Comfort working in the open with public bugs, code review, and upstream landing.
Experience:Browser-engineFirefoxGecko
Skills:DebuggingCode reviewCollaborationWorking in the openUpstreaming
Languages:English
Tech Stack:JavaScriptC++GeckoGecko mochitestsWeb Platform Tests

Company Brief

Mozilla
Mozilla is a mission-driven organization that builds open-source internet products (notably the Firefox browser) and advocates for an open, private, and secure web through software, research, and community programs.
Industry: Enterprise Software
Company Size: Large (251 to 1,000 employees)
Growth: Nonprofit & NGO
Headquarters: San Francisco, United States
Founded: 1998
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