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Senior Security Engineer, Add-ons Operations - Mozilla - Remote - Global

Security Engineer

Posted: July 8, 2026
Posted 1 day ago
Last seen in crawl: July 7, 2026 (1d ago)
Estimated Expiry: August 12, 2026
Remoteness
Role & Management
Role Level:Mid-Level
Job Type
Required Languages

Job Description

Mozilla is hiring a Senior Security Engineer, Add-ons Operations in Remote US, Core Services, Firefox, Firefox, New Products, Firefox, Core Services, Mozilla.org, Firefox. The role involves developing resilient systems for the Firefox add-ons ecosystem, including automated moderation pipelines, reviewer tools, and DevHub. The engineer will work on full stack development with React/TypeScript, Django, and MySQL, focusing on platform reliability, security, and ecosystem moderation. Responsibilities include delivering features, improving platform reliability, and ensuring security and user trust. The candidate should have experience with web applications, Python/Django, web security, and cloud infrastructure. The role offers benefits like bonuses, health coverage, retirement contributions, and flexible work options.

Company Information

Mozilla logo
Technology
Current open roles at Mozilla on JobCrawls
LocationActive listings
Remote Finland46
Remote Germany44
Remote Netherlands43
Remote UK42
Remote France41
Remote Belgium41
Remote Spain40
Remote Sweden38
Remote Poland35
Remote Canada32
Remote US19
Remote - Global15
Remote - Germany6
Remote Denmark6
Remote - France6
Remote - Spain6
Remote - Poland6
Remote - Netherlands6
Remote - Finland6
Remote - Belgium6
Remote - Sweden6
Remote New Zealand5
Remote - Canada5
Remote - UK5
Remote Australia5
Remote - US2
Current role mix at Mozilla on JobCrawls
Role typeActive listings
Software Engineer51
Localization Technical Program Manager2
Product Manager2
Product Director1
Fundraising Strategist1
Machine Learning Engineer1
Grassroots Engagement Director1
Senior Software Engineer1
Security Engineer1
Head of Global and Strategic Intelligence1
Engineer1
Application Engineer1
Social Media & Content Strategist1
Data Scientist1
Quantitative User Researcher1
Current role-level mix at Mozilla on JobCrawls
Role levelActive listings
Mid-Level17
Senior10
Mid-level1

Mozilla appears in 512 indexed job postings in JobCrawls' Finland dataset since October 2023. In that historical index, the strongest location signals for this employer are Remote Finland, Remote Germany, and Remote Netherlands.

Data shown is based on historical job postings from our database.

Job Details

Education Level

None required
1 day agoContent Complete

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