Site Reliability Engineer (Dovecot) (m/f/d)

Department: Periphery Cell

Employment Type: Permanent employee

Schedule: Full or part-time

Seniority: Experienced

Location: Germany, Austria, Finland, France, Italy, Netherlands, Spain

• We work in a non-hierarchical organization that empowers everyone to take responsibility, stay focused, and contribute directly to the company’s success and customer value.
• We value expertise and continuous professional development. Our professionals work closely with experienced colleagues, take ownership of their work, and continuously expand their skills.
• Openness and diversity are core to OX. Different perspectives, backgrounds, and ways of thinking strengthen our collaboration and help us see the bigger picture.

• Design, development, and maintenance of Dovecot infrastructure using Ansible, Terraform, and Helm, with a key contribution to the transition toward a fully Kubernetes-native infrastructure.
• Application of SRE principles to ensure reliability, scalability, and performance of Dovecot in production, including definition of SLOs, reduction of operational toil, and development of self-healing systems.
• Improvement of CI/CD pipelines and streamlining of Kubernetes-native deployments, including Helm chart development and lifecycle management.
• Monitoring, troubleshooting, and optimization of system performance, including regular maintenance, updates, and incident response for production environments.
• Close collaboration with development teams to enhance software reliability and system design, combined with continuous knowledge sharing and staying up to date with cloud-native technologies.
• Participation in an on-call rotation to support production systems.

• System: Linux / Docker / Kubernetes
• Deployment: Helm / Ansible / Terraform / Kubespray
• CI: GitLab CI
• Programming: Bash or Python
• Specific to our product: Dovecot, Cassandra, Redis, Prometheus, Object Storage

• While experience is our primary consideration, a strong willingness to learn and high motivation can make a candidate stand out.
• Strong hands-on experience with Kubernetes including bare-metal or self-managed cluster operations, workload design, and Helm chart development in production environments.
• Comfort working with and administering Linux systems, including networking concepts such as routing, firewalling, DNS, and network performance troubleshooting.
• Proficiency in scripting to automate daily tasks.
• Solid experience writing Infrastructure as Code (Terraform, Ansible) and managing Kubernetes resources in a production environment.
• Strong verbal and written communication skills in English.
• Intrinsic motivation to take ownership and a passion for open-source technologies, thriving in a low-hierarchy environment.
• Comfortable working in a remote-first environment with multicultural teams across different time zones.

• The flexibility to work 100% remotely ensures a work environment that suits you best.
• Flexible working hours that allow you to successfully combine your home and family responsibilities with work. 
• Getting together in-person for workshops and fun team events. 
• Time off to volunteer – and mental health support when you need it.
• We provide financial relief through corporate benefits and a subsidy for ergonomic chairs and desks.
• We can discuss further location-related benefits together in an initial talk.