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MozillaMO

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

A lot of companies say they’re “mission-driven. ” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible.

Mozilla

Employee count: 1001-5000

France only

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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.

About the job

Apply before

Posted on

Job type

Full Time

Experience level

Location requirements

Hiring timezones

France +/- 0 hours

About Mozilla

Learn more about Mozilla and their company culture.

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A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation.

Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks. Mozilla’s Emerging Technologies group incubated and sponsors Rust — Stack Overflow’s “most loved programming language” for the last four years — and is building safe, private versions of virtual reality, internet of things, and voice recognition.

By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.

Employee benefits

Learn about the employee benefits and perks provided at Mozilla.

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Co-working space budget

Reimbursement for coworking space, if that’s how you roll.

Learning and development budget

Reimbursement for professional development (up to $3,000/year)

Retirement benefits

Retirement Plan contributions (or social program contributions by jurisdiction)

Healthcare benefits

Generous medical, dental and vision coverage for you and your family (including no payroll deductions in most countries)

View Mozilla's employee benefits
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Mozilla

Company size

1001-5000 employees

Founded in

2005

Chief executive officer

Mitchell Baker

View company profile

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