Platform and Infrastructure Senior Engineer

Salary: £70,000 – 70,000 per year

Requirements

• We are looking for someone with genuine experience managing Kubernetes in production, ideally including migrations from VMware, oVirt, or similar platforms.
• We value experience with Kubernetes cluster lifecycle management, including building, upgrading, and operating production clusters.
• Experience with Talos Linux as a Kubernetes-native OS would be particularly valuable.
• Experience with Cilium for container networking and network policy would be particularly valuable.
• Experience with rook-ceph for cloud-native storage within Kubernetes would be particularly valuable.
• Experience with BGP networking in a Kubernetes or data centre context would be particularly valuable.
• Experience with Rancher for cluster management and multi-cluster operations would be particularly valuable.
• Experience migrating workloads from hypervisors such as VMware vSphere, oVirt/RHV, or similar to Kubernetes, including re-platforming stateful services, would be particularly valuable.
• We would also value experience as a Systems Administrator, preferably in CentOS/RHEL environments.
• Experience with Ansible and Terraform for infrastructure automation is desirable.
• Experience with AWS services such as EC2, VPC, ALB/NLB, and related services is desirable.
• Experience with Victoria Metrics and Logs, Icinga, or similar monitoring and observability tooling is desirable.
• Experience with RADIUS is desirable.
• Experience with web servers and load balancers such as Apache, Nginx, and HAProxy is desirable.
• Experience with Splunk and Git is desirable.
• Scripting experience in shell and Python is desirable.
• Bonus experience includes CI/CD with GitLab, RPM packaging, databases such as PostgreSQL, and systems design.

Responsibilities

• We will have you play a central role in migrating production workloads from hypervisor-based infrastructure such as VMware and oVirt to Kubernetes, using tools such as Talos, Cilium, and rook-ceph.
• We will have you design and implement Kubernetes-native infrastructure that is production-ready, resilient, and maintainable.
• We will have you contribute to disaster recovery and high availability planning for services running across the new platform.
• We will have you improve developer workflows and support software delivery and automation initiatives.
• We will have you mentor technical colleagues and act as an escalation point for complex infrastructure issues.
• We will have you collaborate with other technical staff to produce clear, useful documentation, including runbooks and migration guides.
• We will have you maintain system security and contribute to System Acceptance and Compliance policies.
• We will have you proactively identify and deliver improvements to our systems and processes.

Technologies

• AWS
• Ansible
• CI/CD
• Cloud
• Ceph
• EC2
• Git
• GitLab
• Icinga
• Support
• Kubernetes
• Linux
• Network
• Nginx
• PostgreSQL
• Python
• RHEL
• Security
• Splunk
• Terraform
• VMware
• Web
• DevOps

More

We are ASK4, a leading provider of managed connectivity solutions for the residential property sector. We connect thousands of residents across the UK and internationally, and our technology teams are central to how we do this. You will join our collaborative, curious Platform and Infrastructure team at a genuinely interesting moment in our infrastructure journey as we move from traditional hypervisor-based environments toward a modern, Kubernetes-native platform. This is a 12-month fixed-term contract based at our Sheffield office, and we are committed to building an inclusive workplace where everyone can thrive.

last updated 27 week of 2026

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