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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior IT Systems Administrator (Linux & HPC) - **Company:** KBR - **Location:** Leatherhead, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Integration Architecture, Microsoft Azure, Bash Shell, Cloud Computing, Configuration Management, Compilers, Data as a Services, Linux, File Systems, Domain Name System (DNS), Firmware, Monitoring of Systems, InfiniBand, IP Addressing, Network Layer, Linux System Administration, NetApp Applications, Network File Systems, Routing, Network Service, Node.Js, Role-Based Access Control, Red Hat Enterprise Linux, Ansible, Server Administration, Server Virtualization, Shell Script, Software Vulnerability Management, Data Logging, Scripting, High Performance Computing, Git, Infrastructure Automation Frameworks, Information Technology, Low Latency, Slurm, Hardware Asset Management, Cisco, Server Operating Systems & Platforms - **Published:** September 19, 2026 - **Apply:** https://dejobs.org/x/x/4DA7E8C91C524A649530EC602C6602F8/job/ ## About the Role A major focus will be the operation of cloud and co-located HPC platforms. The position requires strong Linux engineering experience, practical knowledge of HPC environments, including NVIDIA Base Command Manager, Azure CycleCloud and SLURM. The ability to diagnose complex cross-platform issues, and the confidence to work independently while acting as a senior technical resource for colleagues is also essential. This role does not include formal supervisory or people-management accountability, Essential Technical Skills & Experience * Substantial hands-on experience administering Linux in a complex enterprise or research-computing environment. * Practical experience supporting HPC clusters and diagnosing issues across compute, scheduler, storage and network layers. * Strong operational knowledge of SLURM administration and workload troubleshooting. * Competence in Bash or another relevant scripting language, with a track record of automating administrative tasks. * Experience with Linux performance analysis, capacity management, patching, security hardening and vulnerability remediation. * Experience operating shared file services and troubleshooting NFS, permissions, throughput, latency and capacity issues. * Working knowledge of enterprise networking fundamentals and distributed-system dependencies. * Experience delivering controlled technical change and maintaining accurate documentation in a structured IT service-management environment. Desirable Technical Skills & Experience * Experience with NVIDIA Base Command Manager, Bright Cluster Manager or a comparable HPC cluster-management platform. * Experience with Cisco compute platforms and associated server-management tooling. * Experience administering NetApp storage in Linux or HPC environments. * Knowledge of InfiniBand or other high-speed, low-latency fabrics. * Experience with MPI workloads, environment modules, compilers, engineering or scientific applications, and common HPC software stacks. * Experience with Ansible, Git and infrastructure-as-code practices. * Experience with virtualisation, containers or cloud-hosted Linux workloads. * Knowledge of backup, recovery, monitoring and observability platforms used in enterprise infrastructure. Professional Capability * Able to work independently with minimal supervision and take technical ownership through to resolution. * Demonstrated ability to analyse complex problems, prioritise operational risk and exercise sound technical judgement. * Clear written and verbal communication, including the ability to explain technical issues to specialists and non-specialists. * Strong operational discipline, attention to detail and commitment to secure, reliable and supportable services. * Collaborative approach and willingness to coach colleagues and share knowledge., * Bachelor's degree in computing, engineering or a related field with relevant experience, or an equivalent combination of professional training and substantial practical experience. * Relevant Linux, HPC, Cisco, NVIDIA or NetApp certifications are advantageous but not essential. ## Description The Senior IT Systems Administrator (Linux & HPC) is responsible for the administration, maintenance, security and operational reliability of Linux-based enterprise and high-performance computing platforms. The role will provide hands-on technical ownership across Linux operating systems, HPC compute, workload scheduling and associated storage and network services., Linux Systems Administration * Administer, configure, patch, harden and upgrade enterprise Linux server platforms, with particular emphasis on Red Hat Enterprise Linux or comparable distributions. * Manage core Linux services including identity and access integration, SSH, DNS client configuration, time synchronisation, software repositories, filesystems, logging and scheduled services. * Automate repeatable administration using shell scripting and configuration-management or orchestration tooling. * Monitor Linux performance, availability, capacity and security, and resolve complex operating-system and application integration issues. * Maintain build standards, technical documentation, operational procedures and recovery runbooks. HPC Platform & Workload Scheduling * Operate and support HPC clusters spanning management, login, compute and storage components. * Administer SLURM, including queues and partitions, scheduling policies, job submission, accounting, fair-share, reservations and troubleshooting failed or poorly performing workloads. * Support NVIDIA Base Command Manager and Azure CycleCloud for cluster provisioning, node lifecycle management, monitoring and integration with SLURM. * Work with engineering and scientific users to diagnose job, compiler, library, MPI, resource-allocation and performance issues. * Plan and execute maintenance activities while protecting service availability and active workloads. Compute, Storage & Infrastructure Integration * Administer physical and virtual server infrastructure and support hardware lifecycle, firmware and operating-system maintenance. * Support Cisco compute infrastructure and its integration with Linux and HPC management services. * Operate and support NetApp file and data services used by Linux and HPC platforms, including provisioning, permissions, capacity, performance and availability. * Apply a working understanding of high-speed networking, IP addressing, routing, DNS, NFS, network dependencies and storage connectivity to end-to-end troubleshooting. * Collaborate with network, security, application and storage specialists, vendors and service providers to resolve cross-domain incidents. Security, Resilience & Operational Support * Apply secure configuration, least privilege, vulnerability remediation and audit controls to Linux and HPC systems. * Ensure backup, restore and disaster-recovery requirements are defined, implemented and regularly tested for supported platforms. * Monitor service health and capacity, respond to incidents, identify root cause and contribute to problem management. * Plan and deliver changes through established change-management processes, including risk assessment, testing, implementation and back-out planning. * Participate in an appropriate operational support or on-call arrangement where required. * Provide technical guidance, peer review and knowledge transfer to infrastructure colleagues and service-desk teams. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Running Secure Life Science Research at Scale using Hybrid GPU HPC and Kubernetes 🧬](https://www.wearedevelopers.com/videos/100355-running-secure-life-science-research-at-scale-using-hybrid-gpu-hpc-and-kubernetes) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Top 6 Hackathons for Developers in 2023](https://www.wearedevelopers.com/magazine/263-top-6-hackathons-for-developers-in-2023) - [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)