Senior Contract C++

UKContract2026-10-21 → 2026-11-10

Core

Improve the health of the Firefox DOM Core Session History area by writing and fixing tests to enhance coverage and correctness.

Role type

Senior IC C++ browser engine engineer

Builds

Gecko codebase improvements and Web-Platform test suites

Domain

Browser engine development (Firefox/Gecko)

Required skills

C++ development, JavaScript for automation, debugging in large codebases, code review, Web-Platform testing

Preferred skills

Prior contributions to Gecko or major browser engines, familiarity with web standards

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About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

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