Site Reliability Engineer - Dedicated Hosted Runners

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster.

The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software.

*Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab.

An overview of this role

We're looking for an Intermediate Site Reliability Engineer to join the Runners Platform team. In this role, you'll build and operate Hosted Runners for GitLab Dedicated, the managed CI/CD compute platform that runs our customers' pipelines inside single-tenant Amazon Web Services (AWS) environments.

You'll own infrastructure automation across the full lifecycle: provisioning runner fleets with Terraform, extending the Go tooling and autoscaling stack, and making sure customer continuous integration and continuous delivery (CI/CD) jobs keep running reliably across the platform.

• Design, build, and operate AWS infrastructure for Hosted Runners across many single-tenant environments, including Elastic Compute Cloud (EC2), Auto Scaling Groups, Virtual Private Cloud (VPC) networking, subnets, Network Address Translation (NAT), network access control lists, PrivateLink, Identity and Access Management (IAM), and Elastic Container Registry (ECR).

• Develop and maintain infrastructure as code using Terraform, contributing to common modules and the deployment tooling that provisions and upgrades runner stacks.

• Write Go code for our runner tooling and autoscaling components, including the fleeting instance-lifecycle plugins, zero-downtime deployment command-line interface, and reusable infrastructure toolkits.

• Build and improve the GitLab CI/CD pipelines that orchestrate blue/green zero-downtime deployments, automated upgrades, quality assurance validation, and performance testing of runner stacks.

• Define and monitor service level objectives for CI job execution, including queue times, job success rates, and fleet saturation, and build the Grafana dashboards, alerts, and runbooks behind them.

• Participate in an on-call rotation, handle incidents affecting customer CI/CD workloads, and automate away recurring toil.

• Run performance and scale testing that reflects real customer workloads, and tune autoscaling parameters for cost and reliability.

• Write documentation and runbooks so the broader team can operate runner stacks consistently.

• Professional experience operating production infrastructure on AWS at scale, including EC2, Auto Scaling Groups, IAM, and VPC networking.

• Strong infrastructure-as-code experience with Terraform,