Senior DevOps Engineer (F/M/D)

Your mission You may be our next DevOps Engineer (F/M/D) if you care deeply about the craft of Infrastructure as Code and want to help us scale our hybride cloud. We are not looking for someone to simply “fix servers.” We are looking for a builder - someone who values deterministic rollouts (FluxCD), strong observability (SigNoz / Prometheus), and who is excited about shaping the future of AI-assisted platform engineering with us. In this role, you will act as a trusted expert, bridging the gap between code and production and helping our teams ship software safely and reliably. We are also leaning into AI coding assistants - not just for boilerplate, but to build smarter guardrails across our CI/CD workflows and platform automation. Key Responsibilities: Design, build, and operate scalable cloud infrastructure using Infrastructure as Code (Terraform, Ansible), ensuring repeatability, reliability, and reduced operational toil. Automate provisioning, lifecycle management, and upgrades of Kubernetes clusters across multiple environments (cloud, on-prem, hybrid). Own end-to-end observability: implement and maintain metrics (Prometheus), log aggregation (Signoz), dashboards (Grafana), distributed tracing, and alerting to enable fast incident detection and root-cause analysis Develop and maintain CI/CD pipelines for infrastructure and application artifacts; introduce and operate GitOps workflows (FluxCD) for deterministic, controlled rollouts Integrate DevSecOps practices including automated vulnerability scanning, secrets rotation, and policy enforcement to improve the security posture of production systems Reliability-focused initiatives: HA configurations, chaos/failure testing, capacity reviews, and service hardening Collaborate with cross-functional engineering teams on architecture reviews, troubleshooting of distributed workloads, and performance optimization of critical components Be the trusted expert and partner for the engineering teams to bring ideas to production - secure, reliable, scalable, maintainable and cost efficient. Our Stack: Orchestration: Kubernetes (Cloud + On-prem) IaC: Terraform, Terragrunt, Ansible CD/GitOps: FluxCD, GitLab CI Observability: SigNoz, Prometheus, Grafana Security: HashiCorp Vault, DevSecOps automation Your profile Must have: Professional proficiency in German and English (written and spoken) required for documentation, async communication, and cross-team collaboration 4+ years of experience in a DevOps, Platform Engineering, Site Reliability Engineering role or role in an adjacent field Proven hands-on experience with Kubernetes in production (CKA or equivalent practical experience preferred) Strong expertise in at least two IaC tools: Terraform, Terragrunt, Ansible, or Crossplane Experience building and maintaining CI/CD pipelines (GitLab CI, GitHub Actions, Jenkins, or equivalent) Solid understanding of GitOps principles (FluxCD, ArgoCD) Experience with observability stacks: Prometheus, Grafana, ELK or Signoz Familiarity with DevSecOps tooling: vulnerability scanning, secrets management (e.g., Vault), policy enforcement. A security clearance (Sicherheitsüberprüfung nach SÜG) may be required for this position and therefore your eligibility is a key criteria. Nice-to-have: Experience with on-prem/hybrid Kubernetes environments (bare-metal) Scripting proficiency in Bash and/or Python for automation and tooling Knowledge of HA design patterns and failure testing (chaos engineering) Background in distributed systems troubleshooting and performance tuning Hands-on experience with AI coding assistants (Cursor, GitHub Copilot, Claude Code) in an infrastructure/IaC context - including prompt engineering for config generation and critical review of AI output Experience building AI guardrails in CI/CD e.g., linting/validation stages that catch AI-generated misconfigurations before they reach production Why us? At are committed to creating a culture of collaboration, creativity, and excellence. Therefore, we need driven people like you to foster this culture for the upcoming development. So if you're looking for a place to grow your skills, unleash your creativity, and make a real impact, is the perfect place for you. Let me give you a quick overview of our culture and it’s benefits: Innovation - You’re not just building infrastructure, you’re creating the foundation that enables developers to turn ideas into production faster and safer than ever. Your work will directly accelerate how the company ships features and delivers value. Technical Mastery - You’ll operate across a diverse landscape (cloud, on‑prem, hybrid) with a modern, forward‑leaning toolset (Terraform, FluxCD, Signoz). This is your playground to refine your craft, evaluate new technologies, and set lasting engineering standards. Hybrid Working Model (Kiel/Hamburg area) - So you can choose to do home office and work from our office in Kiel 2 to 3 days per week. Either way, you will be provided with high-quality work equipment to meet your needs. Extended Holidays - 30 days of holidays per year. We want our employees to have enough time to recharge.