Remote Contract: DOM Core Test Engineer for Firefox/Gecko

Mozilla-Corporation; Greater London; Remote; GBP 70,000 - 110,000; Full time

Job summary

Mozilla-Corporation in the United Kingdom seeks a Contract Software Engineer to join the DOM Core Firefox/Gecko team remotely. You will write tests, fix failing cases, and help improve Gecko health and test coverage.

You will collaborate through public bugs and code reviews, working with the Gecko team to land changes in a mature Mozilla codebase. This role involves remote work across Europe and the UK.

Qualifications

• Proficiency in C++ development and debugging in a large codebase.
• Comfort working with public bugs, code reviews, and upstream landing.
• Familiarity with Web Platform Tests is a plus.

Responsibilities

• Write Web-Platform tests to improve coverage and Gecko mochitests as needed.
• Fix problems and pass tests to improve Gecko correctness.
• Engage in code reviews with Gecko module owners and iterate to landing.

Skills

C++ development

Debugging large codebase

Open source collaboration

Tools

Web Platform Tests

Job description

Mozilla-Corporation in the United Kingdom seeks a Contract Software Engineer to join the DOM Core Firefox/Gecko team remotely. You will write tests, fix failing cases, and help improve Gecko health and test coverage.

You will collaborate through public bugs and code reviews, working with the Gecko team to land changes in a mature Mozilla codebase. This role involves remote work across Europe and the UK.