Principal Site Reliability Engineer

Principal Site Reliability Engineer

New York City, NY

Hybrid Schedule (M/F remote, T/W/TH in-office)

East Coast Remote Considerations in FL, GA, MA, NJ, NY, NC, PA, SC, VA

At Magnite, we cultivate an environment of continuous growth and collaboration. Our work impacts what millions of people read, watch, and buy, and we’re looking for people to help us tackle that responsibility with creativity and focus. Magnite (NASDAQ: MGNI) is the world’s largest independent sell-side advertising platform. Publishers use our technology to monetize their content across all screens and formats including CTV / streaming, online video, display, and audio. Our tech fuels billions of transactions per day!

About this team:

The Site Reliability Engineering (SRE) team is a globally distributed group of approximately 25 engineers, dedicated to ensuring the reliability, scalability, and performance of our production systems. Spanning multiple time zones and regions, we operate as a cohesive unit that supports mission-critical infrastructure 24/7.

We sit at the intersection of software and systems engineering, partnering closely with application developers, infrastructure, security, and product teams. In addition to owning core reliability initiatives, we support the broader engineering organization by building shared tooling, defining best practices, and providing guidance on operational excellence.

Our work focuses on areas such as observability, automation, platform reliability, capacity planning, and incident response, with a strong emphasis on reducing toil and improving system resilience at scale.

We embrace and promote modern DevOps principles to deliver robust, scalable platforms. As a Principal SRE, you’ll join a senior group of peers who value ownership, technical leadership, collaboration, and a commitment to engineering excellence.

In this role you will:

• Be a key member of the Technical Infrastructure, Engineering, and Operations (TIEO) organization

• Provide senior-level technical leadership, guidance, and mentorship across the broader Engineering organization

• Champion automation and standardization efforts to accelerate system deployment and reduce operational overhead

• Lead architectural reviews and contribute to the design of scalable, resilient, and observable systems

• Ensure the operational integrity, reliability, and performance of our global production infrastructure

• Design and implement scalable solutions to manage and monitor thousands of hosts and services efficiently

• Build and operate multi-tenant Kubernetes environments, with a focus on reliability, security, and performance

• Collaborate with platform teams that manage data infrastructure such as Hadoop and Kafka to ensure seamless integration and operational reliability

• Participate in a shared 24/7 on-call rotation to support system availability and incident response

We’re looking for someone with:

• A BA/BS degree in a technical discipline (or equivalent practical experience)

• 5+ years of experience deploying and managing infrastructure-as-code and configuration management tools such as Puppet, Ansible, or Terraform

• Proficiency with Git and modern version control practices, especially as they relate to continuous integration and delivery workflows

• Strong understanding of core Internet protocols and networking concepts, including TCP, DNS, and HTTP

• In-depth experience designing, deploying, and maintaining Kubernetes infrastructure in distributed, high-availability production environments

• Hands-on experience with both cloud-based and on-premises infrastructure, with a solid understanding of hybrid environments

• Familiarity with hypervisors and virtualization platforms such as KVM and VMware

• Experience architecting, implementing, and scaling CI/CD pipelines using tools such as Argo CD, GitHub Actions, and Jenkins, with a focus on reliability, security, and developer experience

• Working knowledge of managing artifact repositories like AWS ECR, Nexus, or Yum

• Demonstrated ability to lead cross-functional technical initiatives and drive alignment on infrastructure and reliability best practices

• Strong written and verbal communication skills, with a proven ability to collaborate effectively across globally distributed teams

• A continuous improvement mindset with a bias for action and accountability

Comprehensive Perks and Benefits: 

• Comprehensive Healthcare Coverage for You and Your Family from Day One

• Generous Time Off  

• Holiday Breaks and Quarterly Wellness Days

• Equity and Employee Stock Purchase Plan

• Family-Focused Benefits and Parental Leave 

• 401k Retirement Savings Plan with Employer Match

• Disability and Life Insurance

• Cell Phone Subsidy

• Fitness and Wellness Reimbursement

Company Culture: 

• Community Service and Volunteer Events

• Company-Matched Charitable Contributions

• Wellness Coach and Mental Health Support

• Career Development Initiatives and a Career Growth Framework

• Culture and Inclusion Programs

• Bonusly Peer-to-Peer Recognition Program

About Us

The world's leading agencies and brands trust our platform to access brand-safe, high-quality ad inventory and execute billions of advertising transactions each month. Anchored in bustling New York City, sunny Los Angeles, mile-high Denver, historic London, and down under in Sydney, Magnite has offices across North America, EMEA, LATAM, and APAC.

The base salary range for this position is: $175,000 - $200,000 in addition to an annual variable bonus based on performance and company equity (NASDAQ: MGNI). 

Magnite is an Equal Opportunity Employer and does not discriminate against applicants due to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation or any other federal, state or local protected class.

Our Commitment: We aim to incorporate a wide range of voices into our Magnite culture, cultivating an environment where employees feel welcomed, cared for, and encouraged to freely share ideas. We are committed to employee growth, collaboration, inclusion, and innovation.  We invest in Magnite’s local communities. We seek talent from all backgrounds to champion corporate values of seeing the big picture and being catalysts of change.

Want to learn more about us?  

Check out our blog for Magnite announcements and Ad Tech industry news! 

Recruiting Agency Notice

Magnite does not accept agency resumes and is not responsible for any fees related to unsolicited resumes.