(Senior) DevOps Engineer (m/f/x)

About the Position

We are seeking a Senior DevOps Engineer to join our team in Berlin. You will be responsible for managing our infrastructure and DevOps processes.

Responsibilities

You will work in a dedicated team on innovative solutions in a dynamic, product-oriented environment. Your tasks will include:

• Kubernetes & containers: Operation and expansion of our clusters - node setup, upgrades, deployments, troubleshooting, and application testing; onboarding of development teams onto the platform; management of Docker-based container solutions and their integration into the existing infrastructure.
• CI/CD & GitOps: Maintenance and further development of our GitLab environment, including pipelines, runners, the GitLab Agent for Kubernetes, and the Jira integration; GitOps-based delivery with ArgoCD or Flux.
• Automation & Infrastructure as Code: Provisioning and configuration management with Terraform and Ansible.
• Databases: Installation, configuration, maintenance, and troubleshooting of our database systems.
• Observability: Setup and operation of ELK / TIG / Grafana Alloy stacks - installation, configuration, dashboards, and alerting.
• Networks & diagnostics: Analysis and optimization of our networks; log file analysis and systematic root cause analysis, up to and including complex incidents at packet level.
• Security: Security checks at application and infrastructure level, plus security gates in the pipeline (SAST, dependency/SCA scanning, secrets detection, SBOM generation, artifact signing).

Requirements

• A degree in computer science, a STEM subject, or an equivalent qualification gained through several years of professional experience.
• Strong Linux skills and solid networking fundamentals (TCP/IP, DNS, TLS, MTU/routing) with proven troubleshooting ability.
• At least 3 years of hands-on Kubernetes experience in production environments, along with container technologies (Docker/OCI).
• Hands-on depth with GitLab CI/CD or comparable systems, and with GitOps tooling such as ArgoCD or Flux.
• Practical experience automating infrastructure and configuration as code with Terraform and Ansible.
• Excellent analytical and debugging skills, with a structured, detail-oriented way of working.
• A collaborative mindset: you enjoy developing solutions together, document your work, and share knowledge across the team.

Nice to Have

• Experience with a specific cloud platform (OCI, Azure, AWS, or GCP) and with migration projects.
• Familiarity with Dev Sec Ops toolchains such as Sonar Qube, Sonatype Lifecycle, Trivy, or Cosign/Sigstore.

We Offer

We value personal interaction and foster a vibrant team culture, so we offer a hybrid work model that requires a presence in the office at least three days a week and allows for remote work. Additionally, we offer interesting workation models. Our team enjoys daily amenities such as:

• Fresh fruit daily in the team kitchen
• An in-house canteen with a daily selection of dishes from our chefs
• Table tennis and football
• Flexible working hours and partial remote work
• Space for creativity
• Budget for training and further education
• Access to discounts in the travel industry
• Team activities

Oh, by the way, we speak English during the day.

About the Company

With over 1150 employees working at more than 40 international locations, the AERTiCKET Group is one of the biggest air ticket wholesalers in the world. For more than 25 years, the company has been a competent and reliable partner for travel agencies, tour operators, and Internet portals. The Berlin-based company is characterized by competitive prices, first-class service, and the development of innovative booking technologies. The AERTiCKET Group issues around 7 million tickets annually, and the consolidator's database contains 55 million airfares.