94K–139K CAD / year
Senior Software Engineer, Add-Ons
BackendWorkplace — Canada
Published on 2026-09-24
These details were extracted automatically from the original listing. They may not be complete or fully up to date — it's worth checking the original job post.
About this role
The Senior Software Engineer for Add-Ons will enhance the Firefox add-ons ecosystem by developing features and improving platforms for developers and users. The role involves collaboration with various teams to modernize architecture while ensuring a reliable user experience.
About the company
Mozilla builds open-source products and technologies, including Firefox, that prioritize privacy, security, and an open internet.
The team
Add-ons team
Stack
PythonDjangoMySQLReactTypeScript
What you'll do
- Deliver major features and architectural improvements
- Establish engineering standards
- Create robust observability systems
- Provide peer feedback and mentorship
- Improve CI/CD pipelines
- Document technical processes
- Collaborate with cross-functional teams
- Work on feature development and internal developer platforms
What we're looking for
- Experience with Python/Django
- Reliability in production software systems
- Familiarity with CI/CD systems
- Automated testing and deployment workflows experience
- Understanding of observability practices
- Experience developing internal tools
- Ability to read and understand codebases
- Strong technical writing skills
Nice to have
- Experience with Google Cloud and Kubernetes
- Infrastructure-as-code tooling knowledge
- Experience with chaos engineering
- Contributions to open source projects
Benefits
- Performance-based bonuses
- Rich medical, dental, and vision coverage
- Generous retirement contributions
- Wellness days
- Paid parental leave
