Senior Test Engineer - Gecko Session History

Mozilla; Greater London; On-site; GBP 90,000 - 110,000; Full time

Job summary

Mozilla in London is seeking a Software Test Engineer to help the Firefox DOM Core team improve the health of the Session History area. You will write tests to broaden coverage, fix failing tests, and refine tests to improve Gecko correctness.

You will collaborate through code review with Gecko module owners, iterate toward landing, and contribute to test coverage and code quality across Web Platform Tests.

Qualifications

• Strong debugging skills in a large, mature codebase.
• Substantial experience in a browser-engine codebase or automating for a browser-engine (Firefox/Gecko).
• Comfort working in the open: public bugs, code review, and upstream landing.
• Solid JavaScript and applying that language skill to write automated tests.
• Proficiency in and experience developing software in C++.
• Familiarity with web standards and Web Platform Tests.
• Prior contributions to Gecko or another major browser engine.

Responsibilities

• Write Web-Platform tests to improve coverage.
• Fix tests and/or problems to improve Gecko correctness.
• Work through code review with Gecko module owners and iterate to landing.
• Improve Session History test coverage and code correctness in Gecko.

Skills

JavaScript

C++

Browser-engine experience

Automated tests

Debugging large codebase

Public bugs and code review

Web Platform Tests

Tools

Gecko

Web Platform Tests

Job description

Mozilla in London is seeking a Software Test Engineer to help the Firefox DOM Core team improve the health of the Session History area. You will write tests to broaden coverage, fix failing tests, and refine tests to improve Gecko correctness.

You will collaborate through code review with Gecko module owners, iterate toward landing, and contribute to test coverage and code quality across Web Platform Tests.