Senior Security Engineer - Remote (France)

Mozilla Corporation; France; Remote; EUR 53,000 - 71,000; Full time

Benefits offered by this job

Generous performance-based bonus plans

Rich medical, dental, and vision

Generous retirement contributions with

Home office stipend

Annual professional development budget

Quarterly wellness days

Birthday holiday

Employee referral bonus

Job summary

Mozilla is seeking a Senior Software Engineer - Operations for the Add-ons ecosystem. You’ll drive major features across the stack, from DevHub to automated moderation, while building robust observability and security-focused improvements.

You’ll collaborate with engineers, reviewers, product managers, and community contributors to deliver scalable, trusted experiences for millions of add-on developers and users.

Qualifications

• Experience building modern web applications.
• Strong experience with Python/Django or similar backend frameworks.
• Understanding of web security principles and practices.
• Strong collaboration and communication skills in a distributed team environment.
• Adept at navigating ambiguity, exploring solutions, and shaping direction in new problem spaces.

Responsibilities

• Deliver major features and architectural improvements across the Add-ons stack, including automated moderation pipelines, Reviewer tools, and DevHub.
• Create robust observability systems and data-backed insights.
• Provide peer feedback, share knowledge and help others grow.
• Improve platform reliability through deployments, monitoring, and incident response.
• Help keep the platform safe and trustworthy, with attention to security and user trust.
• Step in to resolve issues impacting users and developers, from small bugs to larger incidents.
• Collaborate with designers, product managers, QA, and community contributors to deliver end-to-end improvements.
• Contribute in the open through pull requests, code reviews, and discussions.

Skills

Python/Django

React/TypeScript

Web security

Open source

Google Cloud

Tools

MySQL

Job description

Mozilla is seeking a Senior Software Engineer - Operations for the Add-ons ecosystem. You’ll drive major features across the stack, from DevHub to automated moderation, while building robust observability and security-focused improvements.

You’ll collaborate with engineers, reviewers, product managers, and community contributors to deliver scalable, trusted experiences for millions of add-on developers and users.