Senior Software Engineer, Add-Ons

💼 Full-time🗓 2026-09-23 → 2026-09-26

Core

Build full-stack features for automated moderation pipelines, Reviewer tools, and DevHub to improve platform reliability and trust and safety signals.

Role type

Senior full-stack software engineer (web)

Builds

Automated moderation pipelines, Reviewer tools, DevHub, submission flows, and ecosystem moderation tools

Domain

Internet platform infrastructure / Trust and safety

Deliverable

production ML models | product features | infrastructure

Required skills

Python/Django, React/TypeScript, MySQL, Google Cloud, web security, observability, incident response, full-stack development

Preferred skills

Experience with open-source discussions, navigating ambiguity, shaping direction in new problem spaces

Technologies

React, TypeScript, Django, MySQL, Google Cloud

Responsibilities

Deliver major features and architectural improvements across automated moderation pipelines, Reviewer tools, and DevHub; Create observability systems and data-backed insights; Improve platform reliability through deployments, monitoring, and incident response; Develop submission flows, trust and safety signals, and platform modernization initiatives; Resolve user- and developer-impacting bugs and incidents

Seniority

Senior, hands-on IC

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About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.