Portsmouth. What you'll be doing: Leading the design, administration, optimisation, and support of large-scale Linux environments, ensuring high availability, performance, security, and resilience. Architecting and supporting High Performance Computing (HPC) platforms, including compute, storage, networking, workload scheduling, and user environments. Designing, deploying, and managing container … strong focus on Ansible orchestration. Modernising operational processes and legacy tooling, championing automation-first approaches and migration from Puppet. Working closely with DevOps, Security, Operations, PMO, Application, and CTO teams to deliver robust and future-ready solutions. Providing expert troubleshooting, technical leadership, and mentoring across Linux, cloud, storage ...