Senior Security Engineer – Add-ons Operations

This is a fully remote position, open to applicants in United Kingdom.

📋 Description

• Implement significant features and architectural enhancements throughout the Add-ons stack, which includes automated moderation pipelines, Reviewer tools, and DevHub.

• Develop comprehensive observability systems and generate data-driven insights.

• Offer constructive peer feedback, impart knowledge, and assist in the growth of others.

• Enhance platform reliability through effective deployments, monitoring, and incident management.

• Ensure the platform remains secure and trustworthy, prioritizing security and user confidence.

• Intervene to address issues affecting users and developers, ranging from minor bugs to major incidents.

• Collaborate with designers, product managers, QA, and community contributors to implement end-to-end enhancements.

• Engage in open contributions through pull requests, code reviews, and discussions.

• Focus on:

• Full stack development: React/TypeScript frontends, Django backend, MySQL datastore.

• Platform reliability: deployments, monitoring, and incident management on Google Cloud.

• Feature development: submission processes, trust and safety indicators, and modernization of DevHub and Reviewer tools.

• Ecosystem moderation: management of abuse reports, adherence to policies, and ensuring ecosystem safety.

• Open collaboration: We operate transparently, welcoming contributions from both Mozilla staff and community participants.

⛳️ Requirements

• Proven experience in developing modern web applications.

• Extensive experience with Python/Django or comparable backend frameworks.

• Knowledge of web security principles and best practices.

• Excellent collaboration and communication skills in a remote team setting.

• Skilled at navigating uncertainty, discovering solutions, and guiding direction in new problem areas.

• Dedication to our core values:

• Embracing diversity

• Fostering relationship-building

• Engaging in responsible participation

• Demonstrating resilience

• Bonus qualifications include:

• Experience in developing automated security systems.

• Familiarity with cloud infrastructure (Google Cloud or similar).

• Contributions to open-source projects.

• Experience with tools for policy-compliant ecosystem moderation.

🏝️ Benefits

• Competitive performance-based bonus plans available to all eligible employees - we celebrate our success as one cohesive team.

• Comprehensive medical, dental, and vision insurance coverage.

• Generous retirement contributions with 100% immediate vesting, regardless of personal contributions.

• Quarterly wellness days for the entire company, allowing everyone to take a collective break.

• Country-specific holidays along with an additional day off for your birthday.

• One-time stipend for home office setup.

• Annual budget for professional development.

• Quarterly well-being stipend.

• Substantial paid parental leave.

• Employee referral bonus program.

• Additional benefits (life/AD&D, disability, EAP, etc. - varies by country).