Senior Software Engineer, WebExtensions - Remote

Posted 11 hours ago

Software Development

Full Time

Worldwide

$95,000 - $139,000 CAD/year

Overview

The Senior Software Engineer for WebExtensions at Mozilla will be responsible for enhancing the add-ons ecosystem in Firefox, ensuring safety and performance while providing users with customizable browser experiences.

In Short

Implement and maintain WebExtensions APIs and Addon Management.
Debug and fix issues affecting extensions in Firefox.
Collaborate with product managers and QA teams.
Contribute to Mozilla-owned extensions and system add-ons.
Participate in open source workflows.
Support extension developers with diagnostics and documentation.

Requirements

4+ years of professional software development experience.
Strong proficiency in JavaScript, DOM APIs, HTML, and CSS.
Familiarity with modern browser architecture and debugging tools.
Experience with API design and integration.
Ability to navigate and learn from large codebases.
Strong communication skills in distributed teams.
Bonus: Experience with Firefox internals, C++ or Rust.
Bonus: Familiarity with Android or GeckoView development.
Bonus: Knowledge of web security principles.
Bonus: Contributions to open source projects.

Benefits

Generous performance-based bonus plans.
Rich medical, dental, and vision coverage.
Generous retirement contributions with immediate vesting.
Quarterly wellness days for all employees.
Country-specific holidays and a day off for your birthday.
One-time home office stipend.
Annual professional development budget.
Quarterly well-being stipend.
Considerable paid parental leave.
Employee referral bonus program.
Other benefits vary by country.

Mozilla

Mozilla Corporation is a non-profit-backed technology company that has been dedicated to improving the internet for over 25 years. Known for its pioneering products like the privacy-focused Firefox browser and the content-saving service Pocket, Mozilla serves over 225 million users globally each month. The company is committed to open-source software development, ensuring that the internet remains a resource for people rather than corporations. With a focus on diverse areas such as AI, social media, and security, Mozilla aims to create engaging and inclusive products while fostering a collaborative and learning-oriented work environment. As a wholly-owned subsidiary of the Mozilla Foundation, Mozilla Corporation prioritizes its mission over shareholder interests, striving to build a better internet for everyone.

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