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Mozilla

Staff Operations Engineer

Mozilla

Staff Operations Engineer at Mozilla leading design and reliability of hybrid-cloud and workplace infrastructure. Combining technical execution with leadership across complex initiatives and teams.

Posted 6/10/2026full-timeRemote • 🇺🇸 United StatesLeadWebsite

Tech Stack

Tools & technologies
AnsibleCloudDNSFirewallsLinuxPuppetPythonTCP/IPUnixVMware

About the role

Key responsibilities & impact
  • 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)
  • Lead delivery of ambiguous, high-impact infrastructure projects
  • Break down elaborate system problems into implementable solutions
  • Drive migrations, re-architectures, and performance/reliability improvements
  • Remain hands-on with critical systems and implementations
  • 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, DC, cloud)
  • 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
  • Design and support core infrastructure components (compute, DNS, networking, identity, etc.)
  • Drive improvements in performance, scalability, and dependability
  • Contribute deep expertise in at least one area (e.g., DNS, network architecture, cloud infra)
  • Build and improve automation using scripting and Infrastructure as Code
  • Contribute to internal tooling and platform improvements
  • Promote repeatable, standardized approaches to system management
  • Mentor engineers and guide system design and troubleshooting
  • Raise the technical quality of the team through reviews and shared practices
  • Act as a go-to resource within the domain
  • Maintain clear documentation, diagrams, and runbooks for systems owned
  • Ensure systems are understandable and operable by others
  • Contribute to knowledge sharing across teams

Requirements

What you’ll need
  • 6+ years of experience in systems engineering or infrastructure roles
  • Strong experience designing and operating production infrastructure
  • Solid expertise in: VMware
  • Cisco UCS
  • Application/Network Loadbalancers
  • Linux/Unix Operating Systems
  • Networking fundamentals (DNS, TCP/IP, routing, firewalls)
  • Data center environments
  • Demonstrated ability to lead complex technical work across teams

Benefits

Comp & perks
  • Generous performance-based bonus plans for 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)

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
infrastructure architecturescalable systems designsystem reliability improvementsautomationInfrastructure as Coderoot cause analysiscapacity planningmonitoringalertingnetwork architecture
Soft Skills
leadershipcollaborationmentoringproblem-solvinginfluencecommunicationdocumentationknowledge sharingtechnical decision-makingstandardization