Platform Engineer – Self-Managed Kubernetes

Location: London

Employment Type: Full-time

Working Style: Hybrid – 3 days per week in the London office

The Opportunity

We are looking for a Platform Engineer with strong hands-on experience building and operating self-managed Kubernetes environments. This is a hands-on infrastructure role focused on designing, deploying, scaling, and maintaining Kubernetes-based platforms across private, on-premises, and cloud environments. We are specifically looking for someone who has personally provisioned, administered, and operated Kubernetes clusters, rather than someone whose Kubernetes experience is limited to deploying applications onto managed services such as EKS, AKS, or GKE.

What You'll Be Doing

• Design, build, and operate self-managed Kubernetes clusters across private/on-premises and cloud environments.
• Manage the full Kubernetes cluster lifecycle, including provisioning, upgrades, scaling, maintenance, and troubleshooting.
• Manage cluster infrastructure including control planes, worker nodes, networking, ingress, and storage.
• Develop and maintain infrastructure-as-code using Terraform and/or Ansible.
• Build and improve CI/CD and GitOps workflows using GitHub Actions, ArgoCD, and Helm.
• Develop internal platform services and automation using Python.
• Monitor and troubleshoot production Kubernetes environments.
• Improve platform reliability, performance, scalability, and observability.
• Implement backup, disaster recovery, and failover strategies.
• Apply security best practices across Kubernetes and cloud infrastructure.
• Support demanding compute, data, and machine-learning workloads.
• Contribute to platform architecture and technical strategy.