Site Reliability Engineer

We're hiring a Site Reliability Engineer to join our Reliability Engineering team. This team builds and runs the secure platforms behind Nominet's registry and DNS services. The role focuses on AWS, Kubernetes, infrastructure as code, GitOps, CI/CD, and self-service tooling.

You'll help design, deploy, and operate scalable cloud infrastructure. You'll also improve how developers use that infrastructure, reducing toil and making delivery safer, simpler, and more repeatable. This is a role for someone who can build systems, not just operate them. You'll need sound technical judgment, clear communication, and the confidence to challenge decisions when reliability, security, or simplicity is at risk.

What You'll Be Doing: Help build and maintain internal tooling in Go

Design, deploy, and manage Kubernetes clusters that support scalable and resilient application infrastructure.

Build and improve self-service infrastructure tools that help developers provision and manage resources safely.

Implement and maintain CI/CD pipelines that make application delivery clearer and more reliable.

Use Terraform to manage infrastructure as code and support automated provisioning.

Apply GitOps principles to infrastructure deployment and configuration.

Work with development teams to integrate services into production AWS environments.

Monitor, troubleshoot, and improve the performance of infrastructure components.

Help keep platforms secure, scalable, stable, and aligned to compliance requirements.

Build scripts and tools in a modern programming language to automate routine operations. Bash scripting is useful as a secondary skill.

Maintain clear documentation for infrastructure setups, procedures, and architectural decisions.

Work closely with security teams to apply practical security controls and good engineering practice.

Assess cloud, container, and GitOps tools where they can reduce toil, improve reliability, or make the developer experience simpler.

You'll bring practical experience in SRE, platform engineering, DevOps, or cloud engineering. You do not need to have followed one fixed career path, but you should be able to show evidence of running and improving production infrastructure.

You'll likely have experience with: Operating production systems on AWS.

Experience with Go or another language (We use Go and will need someone who wants to use this langauge.)

Building or running Kubernetes platforms in production.

Using Terraform for commercial infrastructure deployments, including modules.

Creating or improving CI/CD pipelines, ideally with GitLab or a similar tool.

Applying GitOps workflows, ideally with ArgoCD, or similar tooling.

Automating infrastructure tasks using a modern programming language.

Working with developers, security teams, and other engineers to solve platform problems.

Certifications such as AWS Certified Solutions Architect, AWS Certified DevOps Engineer, CKA, or CKAD may be useful, but they are not a substitute fo practical experience.

Pulled from the full job description Annual leave Employee discount Employee assistance programme Company pension Private medical insurance Car scheme, Hybrid & Flexible Working Early Finish Friday - Working week of 34 hours with full-time pay. (Finish at midday on Friday) 30 days of annual leave plus bank holidays, with the ability to purchase an additional 5 days. Private Medical Insurance + Employee Assistance Programme Medicash Pension Scheme (Matched to 7%) Annual Bonus Scheme Family Leave (Enhanced) Electric vehicle scheme with on-site charging points* Rewards platform with access to discounts at hundreds of shops, restaurants etc.*

• Flexible Benefits

We're Nominet - a world-leading domain name registry operating at the heart of the UK internet. While we're best known for running .UK domains, our DNS expertise also underpins critical internet infrastructure that government services, including the NHS, rely on. As a public benefit company, our work has a positive impact on society. We've donated millions to projects that use technology to improve people's lives and have committed to delivering £60m worth of support over the next three years.