Mozilla
Senior Software Engineer, Add-Ons
Canada, UK, Europe
UTC-8 to UTC+1 $49k to $110k per year Full time
Senior
- Where you can live
- Remote Canada · Remote Netherlands · Remote Spain · Remote Belgium · Remote Finland · Remote UK · Remote France · Remote Germany and 2 more
- Working hours
- Overlap with UTC-8 to UTC+1
- Salary
- Not published
- Posted
- September 15, 2026
Summary from the posting
addons.mozilla.org (AMO) is the foundation of the Firefox add-ons ecosystem. It’s a showcase for developers to publish and grow their extensions, and a place of discovery for millions of users who customize Firefox to make it their own. Behind the scenes are the DevHub which enables developers to manage their extensions. To manage the ecosystem there are a series of Reviewer tools and automated moderation systems.
As a Senior Software Engineer, you’ll bring a passion for crafting resilient systems that accelerate our review and moderation teams to provide a first-class experience for Add-on developers.
This is a short summary. The full description, requirements and the application form are on Mozilla's own career page.