Staff Operations Engineer - Mozilla

About Mozilla

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—without losing focus on our core mission.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation, meaning we aren't beholden to shareholders—only to our mission.

About the Role

A Staff Operations Engineer leads the design, reliability, and evolution of hybrid-cloud and workplace infrastructure. This senior role spans teams, drives complex initiatives, sets technical direction, and ensures systems are scalable, secure, and efficient. This role combines technical execution with leadership, shaping architecture both directly and collaboratively.

What You'll Do

Domain Architecture & Technical Direction

• Own and evolve architecture within a defined infrastructure domain.
• Design and implement scalable, reliable systems spanning multiple teams or environments.
• Establish and promote best practices, patterns, and standards within the domain.
• Contribute to medium- and long-term technical strategy (typically 6–18 months).

Complex Problem Solving & Execution

• Lead delivery of ambiguous, high-impact infrastructure projects.
• Break down elaborate system problems into implementable solutions.
• Drive migrations, re-architectures, and performance/reliability improvements while remaining hands-on with critical systems.

Cross-Team Collaboration

• Work across teams (IT, SRE, Security, Service Owners) to unify solutions.
• Influence technical decisions through design reviews and collaboration.
• Ensure systems integrate cleanly across infrastructures (office, data center, cloud).

Reliability, Operations & Scaling

• Improve system reliability through monitoring, alerting, and operational design.
• Contribute to defining SLIs/SLOs and capacity planning within the domain.
• Participate in and lead root cause analysis for complex incidents.
• Decrease operational toil through automation and system improvements.

Infrastructure & Networking Depth

• Design and support core infrastructure components (compute, DNS, networking, identity, etc.).
• Drive improvements in performance, scalability, and dependability.
• Contribute deep expertise in areas such as DNS, network architecture, or cloud infrastructure.

Automation, Tooling & Documentation

• Build and improve automation using scripting and Infrastructure as Code.
• Contribute to internal tooling and platform improvements.
• Maintain clear documentation, diagrams, and runbooks for owned systems.
• Mentor engineers and elevate technical quality across the organization.

What You'll Bring

• 6+ years of experience in systems engineering or infrastructure roles.
• Strong experience designing and operating production infrastructure.
• Solid expertise in:
  • VMware
  • Cisco UCS
  • Application and network load balancers
  • Linux/Unix operating systems
  • Networking fundamentals (DNS, TCP/IP, routing, firewalls)
  • Data center environments
• Demonstrated ability to lead complex technical work across teams.

Preferred & Bonus Skills

• Experience with Infrastructure as Code (Puppet, Ansible, etc.) and Python.
• Familiarity with observability tooling and reliability practices.
• Experience with containerization and modern platform tooling.
• Exposure to security best practices in infrastructure design.
• GitHub Enterprise Administration (User access management, GH org/repo management, SSO/SCIM integration, policy enforcement).

What You'll Get

• Generous performance-based bonus plans.
• Comprehensive medical, dental, and vision coverage.
• Generous retirement contributions with 100% immediate vesting.
• Quarterly all-company wellness days and country-specific holidays plus a birthday day off.
• One-time home office stipend.
• Annual professional development budget.
• Quarterly well-being stipend.
• Paid parental leave and employee referral bonuses.