Software Engineer

Build and maintain Mozilla’s Internal Developer Infrastructure Platform, including CI/CD, observability, Kubernetes optimization, environment bootstrapping, and cloud cost optimization. Support development teams, guide technical decisions, create platform features and agentic workflows, improve developer productivity, and promote maintainable engineering practices. The role also requires cross-functional collaboration, technical leadership, proposal writing, and resolving ambiguous infrastructure challenges., Mozilla’s Cloud Engineering team seeks a Senior Software Engineer to mature, maintain, and build features for our Internal Developer Infrastructure Platform. You will work on creating standardized, scalable systems for CI/CD, Observability, Kubernetes optimization, environment bootstrapping, cost optimization, and more. Supporting the Infrastructure needs of the organization and identifying new opportunities to mature the path to production in a safe, cost effective way will also be an integral part of this role.

What you’ll do:

• Support infrastructure that development teams use to own and operate their services at Mozilla.
• Guide technical decision-making and adoption of user-centric solutions.
• Create Claude skills and design agentic workflows that improve developer productivity
• Guide team members and promote engineering standard methodologies, with a focus on usability and maintainability.
• Facilitate cross-functional collaboration for efficient and cohesive platform delivery.
• Write proposals and decision briefs for new policies, processes, and platform functionality.
• Create new features for the platform with a meaningful value proposition
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With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.

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• Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
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• Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
• Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
• Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
• Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute

• 5+ years experience in software engineering with expertise in at least one of (Platform Engineering, Cloud Engineering, SRE, DevOps)
• Proven technical leadership experience.
• Expertise in several of the following (ArgoCD, Grafana, K8s, GitHub, Terraform, Helm, Backstage, Cloud Cost Optimization)
• Proficient in Python, JavaScript, or Go.
• Strong expertise in cloud-native technologies (GCP preferred; AWS also acceptable).
• Excellent communication skills aligning technology with user needs and organizational goals.
• Self-starter who thrives in ambiguity.
• Curiosity and interest in learning new things

• Commitment to our values:

• Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit

Bonus points for…

• Experience with distributed systems architecture and design
• Knowledge of cloud security and governance principles
• Experience designing agentic workflows
• Database expertise
• Experience building Internal Developer Platforms

• Generous performance-based bonus plans to all regular 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.

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission - to make the internet better for people.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders - only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.