Jobs / gridscale GmbH
Senior Site Reliability Engineer - Ceph / On-Prem Cloud Storage (m/f/d)
gridscale GmbH · Köln, NW, Deutschland
Köln, NW, DeutschlandRemote
Remuneration
Market- and performance-based compensation; employer-funded pension plan; insurance package; public transportation cost coverage; sports contribution; cargo bike leasing contribution
Location
Köln, NW, Deutschland
Visa sponsorship
Not specified
Job summary
Own and evolve the Ceph storage foundation for an on-premise cloud platform, providing block, object/S3, and file storage as the infrastructure scales to petabytes. Design and operate production Ceph clusters, manage storage hardware and bare-metal provisioning, and automate upgrades, capacity planning, monitoring, and recovery across OpenStack and Kubernetes. Use Ansible, Terraform, GitOps, and AI-assisted engineering to improve reliability and operational automation.
Benefits
32 vacation days, increasing with length of serviceFlexible working hoursHome office optionsEmployer-funded pension planInsurance package50% public transportation cost coverageUp to €400 annual contribution toward sports activitiesCorporate Benefits discountsCargo bike leasing contributionCompany eventsFree hot and cold beverages
Qualifications
- Several years of production storage infrastructure experience as an SRE, Storage Engineer, or Platform Engineer.
- Production experience deploying, operating, and debugging Ceph.
- Working knowledge of CRUSH, pools, placement groups, replication, erasure coding, BlueStore, scrubbing, recovery, and backfill.
- Experience managing storage infrastructure from physical hardware through capacity expansion and hardware migration.
- Kubernetes control-plane knowledge, including operators, controllers, custom resources, reconciliation, and GitOps.
- Ability to troubleshoot OpenStack components, including Ironic, Neutron, Nova, and Glance.
- Experience handling degraded or near-full clusters, recovery under load, or split-brain conditions.
- Strong Linux, bare-metal, block-layer, filesystem, and I/O knowledge.
- Experience with Ansible, Terraform, and GitOps.
- Practical experience using LLMs and agentic tools for engineering or operations.
- Autonomy, ownership, and evidence-based troubleshooting across storage, networking, Kubernetes, and OpenStack.
- Comfort discussing technical topics and documenting decisions in English.
Responsibilities
- Design, operate, and evolve Ceph clusters for block, object/S3, and file storage.
- Manage storage hardware lifecycle, including qualification, maintenance, replacement, and refresh.
- Automate hardware operations while avoiding tenant-visible impact.
- Provision storage nodes on OpenStack-managed bare metal.
- Manage cluster images, package mirrors, certificates, and provisioning dependencies.
- Perform production upgrades, rebalancing, and reconfiguration.
- Evolve infrastructure-as-code and GitOps workflows with Ansible, Terraform, FluxCD, and ArgoCD.
- Plan capacity and forecast storage growth.
- Build monitoring, testing, and failure-injection capabilities for performance, durability, and security.
- Improve self-healing and automated remediation.
- Document technical decisions and share expertise.
Skills
AnsibleArgo CDCephCiliumFluxGitGoGrafanaKubernetesLinuxOpenStackPrometheusPythonS3TerraformOVH
Languages
English
Work schedule
Flexible working hours
Industry
Cloud infrastructureCloud storage
Relocation
No