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Frontend Software Engineer, Firefox

Job Overview

Location

Remote Canada

Job Type

Full-time

Category

Software Engineering

Date Posted

April 21, 2026

Full Job Description

đź“‹ Description

  • • As a Frontend Software Engineer on the Firefox Growth team at Mozilla, you will contribute to building a better Internet by improving the privacy-focused Firefox browser used by over 225 million people monthly.
  • • Day-to-day responsibilities include writing code, tests, and specifications; building prototypes; analyzing performance problems; synthesizing bug reports into actionable tasks; improving existing features; collaborating on new feature development; ensuring Firefox aligns with web standards; and enhancing data quality for better decision-making.
  • • You will join a global, collaborative team of engineers and open-source contributors dedicated to Mozilla’s mission of creating an open, accessible Internet, working remotely from Canada with opportunities for travel and conference participation.
  • • This role offers the chance to grow as an engineer by learning new tools and techniques, contributing to a large open-source codebase, mentoring and being mentored, and making a tangible impact on user experience and web developer success.

🎯 Requirements

  • • Good interpersonal and communication skills
  • • A good grasp of JavaScript, HTML, and CSS
  • • BS in Computer Science or a related field or equivalent experience

🏖️ Benefits

  • • Generous performance-based bonus plans
  • • Rich medical, dental, and vision coverage
  • • Generous retirement contributions with 100% immediate vesting
  • • Quarterly all-company wellness days
  • • Annual professional development budget
  • • Considerable paid parental leave

Skills & Technologies

JavaScript
Rust
Frontend
Remote

Ready to Apply?

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Mozilla Corporation
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About Mozilla Corporation

Mozilla Corporation is a wholly-owned subsidiary of the Mozilla Foundation that develops, maintains, and distributes the Firefox web browser and related open-source software. Founded in 2005 and headquartered in Mountain View, California, it operates as the for-profit arm of the non-profit Mozilla Foundation, ensuring the continued development of open, interoperable internet technologies while funding the foundation’s public-benefit mission. The corporation generates revenue primarily through search partnerships and premium services, reinvesting profits into advancing privacy, security, and user empowerment across the web.

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