Platform Engineer (RCS-SIS-TS-2025-272-LD)

• Support development teams with best practices, deployment models, observability, and platform tooling to ensure smooth integration and reliable production operations.
• Provide and maintain developer tooling (templates, automation scripts, CI/CD workflows, development environments, platform services) to streamline development, testing, and deployment.
• Operate and improve production services (INSPIRE, CAP, SCOAP³, and related systems), ensuring reliability, performance, scalability, and security; participate in monitoring, incident response, and service lifecycle management.
• Lead and contribute to postmortems, conducting structured incident analysis, identifying root causes, defining actions, and driving reliability improvements.
• Design and automate platform components, including Kubernetes resources, GitOps workflows, Helm/Kustomize configurations, and infrastructure-as-code environments to improve reproducibility and reduce operational overhead.
• Prototype and evaluate new technologies (cloud-native tooling, operators, observability stacks, AI-related infrastructure) and integrate them when beneficial.
• Enhance developer experience by improving documentation, automation, self-service capabilities, and platform usability.

Master's degree or equivalent relevant experience in the field of Computer Science or a related field., * Expertise with GitOps and ArgoCD.

• Kustomize and Helm (chart development/maintenance).
• Git proficiency and GitHub repo/organization management.
• Operation of medium-to-large production Kubernetes clusters and Certified Kubernetes Application Developer (CKAD).
• Grafana dashboard creation and maintenance.
• OpenSearch for logs (indices, templates).
• HAproxy/Kubernetes ingress (stick tables, rate-limiting, traffic shaping).
• AI infrastructure: mCP servers, model serving, ML workflows (Kubeflow), vector databases, embedding services, model management.

Technical competencies:

• Administration of computing systems: Operating medium-to-large Kubernetes clusters using GitOps (ArgoCD/Kustomize).
• Knowledge and application of software life-cycle tools and procedures: Automating CI/CD pipelines (Git, Helm).
• Installation, operation and maintenance (preventive and corrective) of computing systems: Operating observability and ingress systems (Grafana/OpenSearch/HAProxy).
• Knowledge of system configuration tools: Defining and maintaining configurations with Helm, Kustomize and IaC.
• Development of system software (drivers, system configuration and monitoring, etc.): AI infrastructure operations (MCP, model serving, Kubeflow, vector DB).

Behavioural competencies:

• Achieving Results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
• Communicating Effectively: expressing opinions, ideas and suggestions with conviction and in a logical/structured manner; keeping to the point.
• Solving Problems: testing solutions for long-term suitability, cross-checking with all concerned before implementation.
• Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
• Learning and Sharing Knowledge: keeping up-to-date with developments in own field of expertise and readily absorbing new information.

Language skills:

Spoken and written English, with a commitment to learn French.

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

Working Hours: 40 hours per week

Job Flexibility: Hybrid

This position involves:

• Work during nights, Sundays and official holidays, when required by the needs of the Organization.
• Stand-by duty, when required by the needs of the Organization., * A competitive salary (tax free), increasing in line with your years of relevant experience.
• 30 days of paid leave per year plus 2 weeks annual closure.
• Coverage by CERN's comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Family, child and infant monthly allowances depending on your individual circumstances.
• A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Imagine taking part in the largest scientific experiment in the world. CERN needs more than physicists and engineers - if you're a student, a graduate, just starting your career or an experienced professional, whatever your field of expertise, CERN could be your next opportunity.