2 hours ago
Remote, United KingdomSenior
Responsibilities
- Deliver features and architectural improvements for automated moderation pipelines, Reviewer tools, DevHub, and Add-ons application systems.
- Build and maintain Python/Django, MySQL, React, and TypeScript application systems and asynchronous processing workflows.
- Create internal developer platforms and tools that help teams develop, deploy, observe, and operate software safely and consistently.
- Improve CI/CD pipelines through declarative, pipeline-as-code approaches and support automated testing, staged delivery, and deployment workflows.
- Develop observability systems using metrics, logging, tracing, service-level objectives, and actionable alerting.
- Contribute to platform reliability through deployments, monitoring, incident response, on-call practices, recoverability, and production readiness.
- Establish engineering standards, including code review, runbooks, documentation, operational readiness, and definitions of done.
- Debug complex production issues across frontend, backend, asynchronous jobs, data stores, and infrastructure, and turn findings into lasting improvements.
- Collaborate with engineers, reviewers, developer support, Add-ons leadership, designers, product managers, QA, and community contributors.
- Provide peer feedback, share knowledge, mentor colleagues, and contribute technical documentation such as design notes, ADRs, runbooks, and incident reports.
Requirements
- Strong hands-on experience building and maintaining production applications with Python and Django.
- Experience operating and improving production software systems where reliability and safe delivery matter.
- Strong experience with CI/CD systems and declarative infrastructure and pipeline practices.
- Experience designing or improving automated testing and deployment workflows, including integration testing and staged or progressive delivery.
- Strong understanding of observability, including metrics, logging, tracing, service-level objectives, and actionable alerting.
- Experience building or maintaining internal tools or platforms used by engineering teams.
- Experience improving engineering practices such as code review standards, operational readiness, runbooks, incident response, on-call expectations, and definitions of done.
- Ability to understand unfamiliar codebases and trace application behavior across frontend, backend, asynchronous jobs, data stores, and infrastructure.
- Experience debugging complex production issues and implementing lasting system improvements.
- Strong technical writing, collaboration, communication, and knowledge-sharing skills in a distributed team environment.
- Bonus experience with Google Cloud, Kubernetes, infrastructure-as-code, policy-as-code, SLOs, error budgets, chaos engineering, disaster recovery testing, production readiness reviews, trust and safety, automated moderation, abuse prevention, adversarial systems, or open-source contributions.
- Commitment to Mozilla's values of welcoming differences, being relationship-minded, responsible participation, and grit.
Benefits
- Remote UK work arrangement.
- Performance-based bonus plans for eligible employees.
- Medical, dental, and vision coverage.
- Retirement contributions with immediate vesting.
- Quarterly company wellness days, country-specific holidays, and a birthday day off.
- One-time home office stipend.
- Annual professional development budget and quarterly well-being stipend.
- Paid parental leave, employee referral bonus program, and additional benefits such as life/AD&D, disability, and EAP coverage, varying by country.
Tech Stack
About Mozilla
Mozilla builds open-source internet software, best known for the Firefox web browser, plus privacy tools like a VPN, password manager, and identity services. Its products are largely free and monetized through search partnerships and paid subscriptions, serving consumers, developers, and enterprises building for the web. Founded in 2005 and headquartered in San Francisco, Mozilla Corporation is wholly owned by the non-profit Mozilla Foundation.