Senior Contract C++ / JavaScript Software Engineer - Firefox

The Role

You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve test coverage and fix tests or underlying issues to improve Gecko correctness.

Responsibilities

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

Definition of Done

Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing senior engineers on the team to focus on security, performance, and strategic projects.

Required Qualifications

• Substantial experience in a browser-engine codebase or in automating for a browser engine (ideally Firefox/Gecko)
• Solid JavaScript skills with experience applying them to write automated tests
• Proficiency and experience developing software in C++
• Strong debugging skills in a mature, large-scale codebase
• Comfort working in the open: public bugs, public code review, and upstream landing

Preferred Qualifications

• Prior contributions to Gecko or another major browser engine
• Familiarity with web standards and Web Platform Tests (WPT)