Senior Software Engineer - Operations

Senior Software Engineer - Operations

What you’ll do

• 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.
• Work on:
• Full stack development: React/TypeScript frontends, Django backend, MySQL datastore.
• Platform reliability: deployments, monitoring, and incident response on Google Cloud.
• Feature development: submission flows, trust and safety signals, DevHub and Reviewer tools modernization.
• Ecosystem moderation: abuse report management, policy compliance, and ecosystem safety.
• Open collaboration: We work in the open, with contributions from Mozilla staff and community members.

What you’ll bring:

• 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.
• Commitment to our values:
• Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit

Bonus points for:

• Experience in building automated security systems.
• Exposure to cloud infrastructure (Google Cloud or similar).
• Contributions to open source projects.
• Experience with policy-compliant ecosystem moderation tools.

What you’ll get:

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team

• Rich medical, dental, and vision coverage

• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)

• Quarterly all-company wellness days where everyone takes a pause together

• Country specific holidays plus a day off for your birthday

• One-time home office stipend

• Annual professional development budget

• Quarterly well-being stipend

• Considerable paid parental leave

• Employee referral bonus program

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

• 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.

• Commitment to diversity, equity, inclusion, and belonging

• Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

• We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us to request accommodation.

• We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

• Group: D

• LI-DNI

• Req ID: R3023

• Applicant Privacy Notice

• Our values drive our actions

• Purpose is built into our work, with our mission driving every decision

• We challenge assumptions, the status quo, ourselves, and each other

• We are transparent: in our code, our business partnerships, and our everyday

• interactions

• We seek out people from diverse backgrounds and with perspectives different

• from our own

• We pair purpose with performance and put people ahead of profit

• Our impact is global

• 1000+ paid staff from over 30 countries

• Thousands of volunteer contributors across six continents

• 2 global offices: Berlin and Toronto

• 9 coworking space locations: San Francisco, San Mateo, London, Paris, Portland, Tulsa, Vancouver, Chicago, and Bellevue

• Hundreds of home offices globally

• Our benefits are world-class

• Flexible work environment (majority of Mozillians work remotely)

• Industry-leading paid parental leave (up to 26 weeks of fully paid leave for

• childbearing parents and up to 12 weeks for non-childbearing parents)

• Reimbursement for professional development (up to $3,000/year)

• A work setup including the latest hardware and software of your choice