Senior Platform Engineer

We are looking for an enthusiastic and inquisitive Platform Engineer to help strengthen our platform engineering capabilities and improve the supportability, observability, and documentation of our infrastructure. You will ensure that infrastructure, connectivity, and shared service dependencies are fully mapped, documented, and efficiently supported.

You will play a central role in enabling engineering teams by developing and maintaining cloud-native infrastructure, CI/CD pipelines, and operational tooling, with a particular focus on standardising support processes and improving cross-team efficiency. The role is highly collaborative, supporting teams with scalable, secure infrastructure patterns, and shared operational capabilities.

You will work with technologies such as GCP, Kubernetes (GKE), Helm, Terraform, and Azure DevOps, and contribute to a platform-first engineering culture that values quality, automation, and continuous improvement.

Main Duties

Platform Engineering & Enablement

• Design, deliver, and maintain Infrastructure as Code solutions using Terraform, enabling scalable, secure environments.
• Manage and deploy application workloads to GKE clusters using Helm charts, supporting best practices in workload isolation and service configuration.
• Support the engineering community by defining infrastructure standards, reusable tooling, and shared CI/CD workflows.
• Maintain clear documentation of infrastructure, connectivity, and platform dependencies across environments.
• Champion the creation and maintenance of support documentation, diagrams, and knowledge bases for platform components.

Observability & Troubleshooting

• Ensure observability is embedded across all layers of the infrastructure stack, enabling proactive alerting, monitoring, and root cause analysis.
• Evaluate and implement tooling to enhance visibility, debugging, and response times for platform services.
• Collaborate with teams to ensure logs, metrics, and traces are appropriately captured and visualised.

Standardisation & Process Improvement

• Define and advocate for standard processes in platform support, infrastructure change, and incident escalation.
• Identify and document shared services across the platform, and establish clear ownership models and escalation paths.
• Review and contribute to infrastructure change processes and CI/CD reviews, ensuring standards are met.

Automation & CI/CD

• Develop and support CI/CD pipelines using Azure DevOps (or equivalent tools), promoting automation across delivery pipelines.
• Contribute to GitOps practices and infrastructure automation through version-controlled, testable configurations.
• Ensure pipelines include infrastructure validation, environment promotion, and automated testing stages.

Experience Required

Technical Expertise

• Strong hands-on experience with Google Cloud Platform (GCP) and managed Kubernetes (GKE).
• Skilled in deploying workloads using Helm charts and managing container infrastructure.
• Proven experience using Terraform to manage Infrastructure as Code.
• Working knowledge of CI/CD concepts and practical experience with tools like Azure DevOps.
• Proficient in using Git and version control practices.
• Familiarity with GitOps tools (e.g. ArgoCD).
• Experience with Service Mesh technologies (e.g. Anthos).
• Scripting skills (e.g. Bash, Python) to build automation and tooling.
• Exposure to monitoring, logging, and observability tooling (e.g. Prometheus, Grafana, GCP Operations Suite).
• Understanding of shared service architecture, security, and access control patterns.

Behavioural Competencies

• Strategic Documentation: Ensures infrastructure and connectivity are mapped, maintained, and shared to avoid knowledge gaps.
• Cross-Team Collaboration: Works effectively with engineering, security, support, and governance to improve platform maturity.
• Initiative & Ownership: Actively drives improvements to infrastructure reliability, supportability, and knowledge sharing.
• Resilience & Knowledge Sharing: Prevents single points of failure by openly sharing knowledge and standardising platform processes.
• Accountability: Owns outcomes for infrastructure reliability, support standards, and platform adoption.

Admiral: Where You Can

We take pride in being a diverse and inclusive business. It's a place where you can Be You, and show up as you are. We're committed to fostering a people-first culture where everyone is accepted, supported, and empowered to be brilliant. You can, Grow And Progress at a pace and direction that suits you, Make A Difference for our customers and each other, and Share in Our Future with all colleagues eligible for up to £3,600 of free shares each year after one year of service.

Everyone receives 33 days holiday (including bank holidays) when they join us, increasing the longer you stay with us, up to a maximum of 38 days (including bank holidays). You also have the option to buy or sell up to an additional five days of annual leave.

We're proud of our people-first culture. In fact, we've been recognised as a Great Place to Work for Women, a Great Place to Work for Wellbeing, and an overall Great Place to Work for over 25 years! We're fully committed to making sure your progression is not slowed or halted by barriers related to race, gender, age, sexuality or any of the protected characteristics.

Our fantastic benefits make sure our colleagues have a great work-life balance; You can view some of our other key benefits here .