Senior Cloud and Infra Reliability Engineer

Mozilla; New York (NY); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health premiums covered

Mental health support

Wellbeing stipend

Paid time off

Job summary

Mozilla is seeking a Staff Operations Engineer in New York to lead 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.

You will own architecture within a defined domain, design scalable systems across multiple environments, and mentor engineers while advancing the technical standards and practices that keep Mozillians

Qualifications

• 6+ years of experience in systems engineering or infrastructure roles.
• Strong experience designing and operating production infrastructure.
• Exposure to security best practices in infrastructure design.
• Experience with containerization and modern platform tooling.
• Familiarity with observability tooling and reliability practices.
• Python
• Puppet/Ansible/etc
• Experience with Infrastructure as Code

Responsibilities

• Lead design, reliability, and evolution of hybrid-cloud and workplace infrastructure.
• 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 (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 IT, SRE, Security, Service Owners to unify solutions.

Skills

Networking fundamentals

Linux/Unix

VMware

Cisco UCS

Data center environments

Load balancers

Python

Containerization

Observability tooling

Infrastructure as Code

Security practices

6+ years experience

Tools

Puppet/Ansible

Job description

Mozilla is seeking a Staff Operations Engineer in New York to lead 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.

You will own architecture within a defined domain, design scalable systems across multiple environments, and mentor engineers while advancing the technical standards and practices that keep Mozillians