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Senior Contract C++ / JavaScript Software Engineer (Browser Engine)

Mozilla

For international applicants

Visa

Sponsorship not stated in the posting.

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Remote work

Remote locations: Belgium, Denmark, Finland, France, Netherlands, Poland, Germany, United Kingdom

Remote does not mean work from any country. Confirm permitted countries and work authorization before applying.

Your work rights

  • Remote · Belgium, Denmark, Finland, France, Netherlands, Poland, Germany, United Kingdom
  • Salary not disclosed
  • Employment type: Full-time ·
  • Level: Senior
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About the employer

MozillaPosted on the employer’s careers page · job-boards.greenhouse.io

Original listings by location

Pay, work arrangement and visa support can differ between locations.

Remote Belgium; Remote Denmark; Remote Finland; Remote France; Remote Netherlands; Remote Poland · Salary not disclosed

Full-time · Senior · Remote locations: Belgium, Denmark, Finland, France, Netherlands, Poland

Original listing for this location ↗

Remote Germany · Salary not disclosed

Full-time · Senior · Remote locations: Germany

Original listing for this location ↗

Remote France · Salary not disclosed

Full-time · Senior · Remote locations: France

Original listing for this location ↗

Remote UK · Salary not disclosed

Full-time · Senior · Remote locations: United Kingdom

Original listing for this location ↗

Remote work schedule

The posting does not say where the team works. Add the employer timezone below if you know it.

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Description (EN)

Location: Remote Belgium; Remote Denmark; Remote Finland; Remote France; Remote Netherlands; Remote Poland

The role

You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness.

Responsibilities

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

Definition of done

Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team’s senior engineers 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 and applying that language skill to write automated tests.
  • Proficiency in and experience developing software in C++.
  • Strong debugging skills in a mature larget codebase.
  • Comfort working in the open: public bugs, code review, and upstream landing.

Preferred

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

Never pay a recruiter for a job offer or a visa promise. Check the original posting and employer identity before sharing documents. Pay any legitimate government visa fees only through official channels.

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