CERN

<h3>Job description</h3>System Administrator (BE-CSS-CSA-2025-216-LD) Geneva Switzerland What you&#39;ll do: You will join the Controls Software &amp; Services (CSS) Group within the Beams (BE) Department, responsible for the controls software and infrastructure used to operate CERN&#39;s accelerators 24/7. As part of the Infrastructure and System Administration (ISA) Section, you will contribute to the evolution of the computing infrastructure that enables the efficient and synchronised operation of CERN&#39;s accelerator complex. You will support the migration of mission-critical control system services to a new on-premises Kubernetes infrastructure, backed by modern network storage and DevOps technologies, ensuring scalability, robustness and business continuity. This is a unique opportunity to apply your system administration and computing expertise to a complex, high-availability environment at the heart of CERN&#39;s scientific mission. Your responsibilities: Perform system administration tasks for the Linux computers connected to the accelerator control system (control room consoles, data centre servers, real-time embedded platforms and virtual machines). Communicate with end-users to understand their needs and help translate these into appropriate solutions. Investigate, diagnose, and resolve operational problems in collaboration with end-users ranging from equipment specialists to operations teams. Participate actively in the strategic evolution of the accelerator control system infrastructure towards container technology hosted upon Kubernetes. Provide containerisation mechanisms and tools for software development teams (base images, registry, security aspects). Contribute to the planning and migration of the infrastructure from bare metal to a clustered container orchestration platform. Advance, improve and upgrade the control system Kubernetes platform and associated services to follow technology evolution and adapt to the needs of users of the controls environment. Collaborate closely with engineers from the IT Department responsible for the general CERN IT infrastructure. Mentor and supervise junior engineers. Your profile: Linux operating system. High-performance and high-availability commercial server platforms. Container technologies (such as Docker and Podman). Administration of an on-premise Kubernetes infrastructure and associated services (e.g. ArgoCD, Hashicorp Vault and Prometheus) with an awareness of architectural concerns and management of the lifecycles of the involved services, including upgrades and integration with network storage. Your skills: Knowledge of operating systems: Linux-based support and maintenance. Architecture and design of ICT systems: Control &amp; data acquisition system, distributed?applications and services. Knowledge of programming techniques and languages: system configuration, monitoring, Python and Java environments. Knowledge of communication technologies and protocols. Installation, operation and maintenance of control systems. Ideal start date: 01/03/2026 Contract duration: 60 month contract Grade range: 6 Benchmark job: 200020 - Computing Engineer Job flexibility: Fully Onsite Team supervision Employment conditions Participation in a regular stand-by duty, including nights, Sundays and official holidays. Read more and Apply via: <a href="https://careers.cern/jobs/system-administrator" rel="nofollow">https://careers.cern/jobs/system-administrator</a>/<h3>Job location</h3>Switzerland<h2>Job requirements</h2>Skills Java (computer programming) SPARKEducation level Short-cycle tertiary education<h2>Employer</h2>Name CERNHow to applyApply via: https://careers.cern/jobs/system-administrator/ <a href="https://arbetsformedlingen.se/platsbanken/annonser/30358495" rel="nofollow">Link to the vacancy on the Swedish job board</a>