Overview As a Senior Platform Engineer, you own the CI/CD Kubernetes platform end to end, shaping capacity, reliability, upgrades, security, and cost. You work with a cross-functional engineering team to keep a self-hosted runner fleet fast and scalable for hundreds of developers. You’ll drive performance improvements, manage bare-metal infrastructure, and turn incident learnings into robust runbooks and guardrails. This role blends hands-on infrastructure with product-minded collaboration to make builds faster and more predictable.

Compensaciones / Ventajas

Alan private health insurance Wellhub fitness facilities Cobee expense savings Language classes Office breakfast and organic fruit Pet-friendly office

Responsabilidades

Rightsize runner tiers using weekly CPU/memory data and update deployment via pull requests Investigate and fix flaky CI jobs by tracing issues to container runtime, kernel, or clock drift Add and onboard machines to the runner fleet with provisioning and networking Reduce queue wait times by identifying blockers across pipeline stages Upgrade clusters or controllers without disrupting users Collaborate with product engineers to optimize workflows that are slow for a reason Own incident response for the platform, run blameless postmortems,



and implement alerts and runbooks Operate bare metal infrastructure with focus on Linux, networking, and troubleshooting

Requisitos principales

5+ years of production infrastructure with Kubernetes at the core Deep knowledge of Kubernetes scheduling, resources, evictions, node pressure, DaemonSets, controllers and operators Strong Linux and container fundamentals (containerd or Docker, cgroups, storage, networking) Terraform and infrastructure-as-code, with modular design and state hygiene CI/CD at platform level; GitHub Actions experience including self-hosted runners Scripting in Bash and at least one of Python or Go Observability with metrics, logs, traces; OpenTelemetry and Prometheus tooling Operational maturity: on-call, incident command, postmortems Capacity and cost awareness; ability to size a fleet and explain billing Clear written English and documentation skills Collaborative mindset Problem-solving and ownership Communication and ability to translate tech details for engineers Kubernetes architecture and operations (scheduling, limits, evictions, DaemonSets, operators) Bare-metal provisioning and troubleshooting GitHub Actions runner platform and runner controller concepts

📌 Senior DevOps Engineer, CI/CD Platform (Developer Experience) - barcelona
🏢 Factorial Hr
📍 Barcelona