Senior Platform Engineer

Salary: £100,000 - 110,000 per year

Requirements:

• Significant experience designing, building and operating cloud-native platforms in enterprise or large-scale environments.
• Strong experience with AWS, including multi-account architectures and secure landing zones.
• Experience building and operating Kubernetes platforms, particularly EKS, with AKS experience also beneficial.
• Expertise in Infrastructure as Code using tools such as Terraform.
• Strong understanding of CI/CD, DevSecOps and modern software delivery practices.
• Experience implementing observability solutions using tools such as OpenTelemetry, Prometheus and Grafana.
• Strong knowledge of cloud security, identity, networking and platform reliability.
• Experience leading technical discussions and influencing engineering direction across multiple teams.
• Proven ability to mentor engineers and provide technical leadership within multidisciplinary teams.
• Experience with Azure and/or Google Cloud Platform is desirable.
• Experience building Internal Developer Platforms and self-service engineering capabilities is desirable.
• Knowledge of GitOps tooling such as Argo CD or Flux is desirable.
• Experience applying Site Reliability Engineering (SRE) practices is desirable.
• Experience driving FinOps initiatives and cloud cost optimisation is desirable.
• Experience modernising legacy estates and delivering large-scale transformation programmes is desirable.
• Familiarity with event-driven architectures and platform automation is desirable.
• Experience working within highly regulated or secure environments is desirable.

Responsibilities:

• Design, build and continuously improve critical digital services used across the Nation.
• Design secure, scalable multi-cloud landing zones, primarily within AWS.
• Build GitOps-driven platforms and Internal Developer Platforms that provide self-service capabilities for engineering teams.
• Modernise legacy environments into cloud-native architectures.
• Create unified observability solutions using OpenTelemetry, Prometheus, Grafana and modern APM tooling.
• Drive improvements in reliability, operability and platform performance through Site Reliability Engineering practices.
• Implement secure CI/CD pipelines with a strong focus on DevSecOps and software supply-chain integrity.
• Deliver event-driven automation and infrastructure capabilities.
• Drive FinOps initiatives and optimise cloud consumption across large-scale estates.
• Apply platform-as-a-product principles to create reusable, scalable engineering capabilities.
• Act as a senior technical authority, influencing platform strategy, architecture and governance.
• Lead technical workshops, architecture discussions and design reviews with stakeholders and delivery teams.
• Define and evolve engineering standards covering security, reliability, observability, CI/CD and operational excellence.
• Establish Service Level Objectives, improve reliability and facilitate incident reviews and continuous improvement activities.
• Champion platform engineering best practices and help teams adopt them successfully.
• Coach and mentor engineers through pairing, technical leadership and knowledge sharing.
• Drive platform-as-a-product thinking, establishing golden paths and self-service capabilities that improve developer experience.
• Remain hands-on by contributing to designs, code reviews, automation and complex technical problem solving.
• Work closely with delivery teams, architects and client stakeholders to define platform strategy and build reusable capabilities.

Technologies:

• AWS
• Azure
• CI/CD
• Cloud
• DevSecOps
• GitOps
• Grafana
• Kubernetes
• OpenTelemetry
• Prometheus
• Security
• Terraform
• DevOps

More:

We are hiring a Senior Platform Engineer to help build the platforms behind critical digital services. This is a hands-on technical leadership role within a highly collaborative engineering community where knowledge sharing, continuous improvement and technical excellence are central. We offer a salary of £100,000 to £110,000 base plus benefits, and you will work on secure, resilient and observable platforms that modernise essential services used across the Nation.

last updated 31 week of 2026