Mozilla

Staff Operations Engineer

Mozilla$163K — $218K *
US-AnywhereRemote in United States
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years of experience in systems engineering or infrastructure roles
  • Strong experience designing and operating production infrastructure
  • Solid expertise in VMware, Cisco UCS, and Application/Network Loadbalancers
  • Confident in Linux/Unix Operating Systems and networking fundamentals (DNS, TCP/IP, routing, firewalls)
  • Familiar with data center environments
  • Demonstrated ability to lead complex technical work across teams

Responsibilities

  • Own and evolve architecture within a defined infrastructure domain
  • Design and implement scalable, reliable systems spanning multiple teams or environments
  • Contribute to medium- and long-term technical strategy (typically 6-18 months)
  • Lead delivery of ambiguous, high-impact infrastructure projects
  • Drive migrations, re-architectures, and performance/reliability improvements
  • Work across teams to unify solutions and influence technical decisions
  • Improve system reliability through monitoring, alerting, and operational design

Benefits

  • Generous performance-based bonus plans for all eligible employees
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • 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 vary by country
Full Job Description
About this team and 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
  • Remain hands-on with critical systems and implementations
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, DC, 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 at least one area (e.g., DNS, network architecture, cloud infra)
Automation & Tooling
  • Build and improve automation using scripting and Infrastructure as Code
  • Contribute to internal tooling and platform improvements
  • Promote repeatable, standardized approaches to system management
Mentorship & Technical Guidance
  • 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
Documentation & Operational Clarity
  • Maintain clear documentation, diagrams, and runbooks for systems owned
  • Ensure systems are understandable and operable by others
  • Contribute to knowledge sharing across teams
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/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
Preferred Skills
  • Experience with Infrastructure as Code
    • Puppet/Ansible/etc
    • Python
  • Familiarity with observability tooling and reliability practices
  • Experience with containerization and modern platform tooling
  • Exposure to security best practices in infrastructure design
Key Competencies
  • Multi-Team Impact: Demonstrate influence and contributions that extend beyond your immediate team. Consistently participate in initiatives that affect infrastructure within your broader domain, and provide support or guidance across multiple teams when necessary.
  • Technical Ownership (Scoped): Take responsibility for systems or architecture within a clearly defined area of the infrastructure. Oversee the health, evolution, and quality of these systems, ensuring alignment with organizational standards.
  • Execution Amid Ambiguity: delivers on loosely defined problems with high impact
  • Influence Without Authority: drives alignment through credibility and alliance
  • Balance of Depth + Breadth: deep in one area, competent across adjacent systems
  • Hands-On Leadership: actively contributes to implementation, not just design
Bonus Skills/Competencies
  • GitHub Enterprise Administration
    • User Access Management
    • GH Org / Repo Management
    • SSO / SCIM Integration
    • Policy Enforcement
What you'll get:
  • 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)


Hiring Ranges:

US Tier 1 Locations

$163,000-$218,000 USD

US Tier 2 Locations

$150,000-$200,000 USD

US Tier 3 Locations

$139,000-$185,000 USD

About Mozilla

Mozilla is a global community of technologists, thinkers, and builders working together to keep the internet open and accessible to all. The company is best known for its flagship product, the Firefox web browser, which is used by millions of people around the world. In addition to its browser, Mozilla also develops a range of other products and services, including a mobile operating system, a password manager, and a virtual private network (VPN) service.
Learn more about Mozilla
Size
1,000 employees
Industry
Founded
1998

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