Senior Software Engineer, Add-Ons

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer, Add-Ons based in Canada.

• You’ll join a distributed engineering team responsible for a platform that supports a large global ecosystem of browser extensions.
• The role combines full-stack development, platform reliability, security, and ecosystem operations.
• You’ll build major features while modernizing architecture across developer, reviewer, and moderation workflows.
• Your work will help improve the experience for extension developers while maintaining a safe and trustworthy ecosystem for users.
• You’ll work closely with engineers, product managers, designers, QA, developer relations, reviewers, and community contributors.
• The environment emphasizes open-source collaboration, technical ownership, resilience, and continuous improvement.
• This is an opportunity to make meaningful contributions to software used by millions of people worldwide.