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.