The Senior Software Engineer is responsible for the planning, architecture, and delivery of major full stack software security projects within addons.mozilla.org (“AMO”).
We’re looking for a passionate and creative individual to join a distributed team of talented and diverse engineers working to maintain, secure and grow our add-ons ecosystem.

Contribute to and demonstrate ownership over major components of the Firefox add-ons ecosystem with a focus on security, taking responsibility for their maintenance and improvement over time
Play a key role in improving our software architecture with the goal of increasing quality and maintainability over time
You will collaborate with people across Product, UX, Design, Engineering, QA, Localization, Ops, and Support teams to build and maintain core features
Step up to resolve product issues that impact our users – large and small
Write unit tests, automated regression tests, and track defects as they occur. Build performant, decoupled, testable, and maintainable code

4+ years of software engineering experience using Python and JavaScript
Excellent communication skills. You can validate your decisions and communicate them clearly
Good knowledge of security analysis and threat modeling
Comfortable exploring solutions to complex problems and working collaboratively to pave the way forward in new problem spaces
Passionate about security and privacy
Bachelor’s degree in computer science, engineering, mathematics, or a related program; or equivalent work experience

We value a variety of voices. You don’t need to check every box on this list to apply.

Experience collaborating with geographically distributed team members
Experience with front-end web application development (CSS, HTML, DOM and related)
Experience with spam prevention or malware detection
The ability to mentor and inspire junior developers
Previous experience working in open source

Senior Software Engineer, Security at Mozilla Corporation

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