Senior DevOps Engineer - CaaS

About the team

Group Network Technology (GNT) is a key part of Deutsche Telekom, where international teams shape and deliver innovative telecommunications IT and network technology solutions across Europe - from architecture and engineering to development, testing, infrastructure, and operations.

In Cloud, we build and operate Deutsche Telekom's on-prem Telco Cloud across all layers - from hardware to orchestration - based on open-source technologies. This is where modern infrastructure meets real-world impact at scale.

Our chapter-based model creates a strong home for expertise, learning, and collaboration - empowering people to grow, contribute in agile teams, and thrive in an inclusive environment while making a meaningful difference for our customers.

What you'll be doing

• Take leadership in the design, development, and continuous improvement of CaaS and PaaS platforms built on the Kubernetes ecosystem, with a strong emphasis on backend development in Golang.
• Architect and implement new platform features, ensuring scalability, reliability, and security.
• Develop and maintain advanced CI/CD pipelines (GitLab, GitOps) to automate and optimize software delivery.
• Integrate and extend monitoring, observability, and incident response solutions (Prometheus, Grafana, ELK).
• Drive the adoption of best practices in coding, testing, security, and code reviews, mentoring other engineers in software craftsmanship.
• Take ownership of complex troubleshooting, root cause analysis, and performance optimization.
• Collaborate with cross-functional teams to deliver highly available, resilient, and secure cloud-native services.
• Contribute to strategic decisions on platform architecture and deployment strategies.
• Participate in on-call rotation (for stand-by operations).

What we are looking for

• University degree in Computer Science, Telecommunication Engineering, Information Systems, or comparable qualification.
• Fluent in English, verbally and written.
• 5+ years of experience in cloud-native environments, with a proven track record in DevOps and platform engineering.
• Extensive experience with Linux environments, including advanced shell/Bash scripting for complex operations and automation.
• Strong hands-on expertise in designing and optimizing CI/CD pipelines with GitOps tools (e.g., GitLab, Flux, ArgoCD).
• In-depth Kubernetes knowledge, covering advanced deployments, cluster administration, lifecycle management, and troubleshooting in large-scale production environments.
• Strong Go (Golang) programming skills, with proven backend development for distributed systems, including tools, microservices, operators/controllers, and Kubernetes-focused automation.
• Solid IT operations background, with hands-on use of observability tools (Prometheus, Grafana, ELK/EFK).
• Advanced experience with Infrastructure as Code (IaC) using Helm or Terraform.
• Strong knowledge of cloud-native security, including secure cluster setup, secrets management, RBAC, and network policies in Kubernetes.

Nice-to-Have

• Familiarity with advanced Kubernetes networking (e.g., Calico, Cilium), service meshes, and multi-cluster setups.
• Experience with Cluster API for lifecycle management and integration of cloud platforms with storage and load balancing (e.g., Cinder, Octavia, AWS/GCP/Azure).
• Experience with TelCo OSS/BSS systems or large-scale enterprise/private cloud environments.

Benefits and training opportunities

• Flexible working hours with partial home office options.
• Comprehensive benefits package (laptop, mobile phone, cafeteria, insurance).
• Employee discount rates on Telekom services.
• Modern, multinational working environment with amenities like a sky bar and rooftop gym.
• Access to our Employee Assistance Program.
• Comprehensive Healthcare Package.
• You will receive a minimum of 25 days of basic vacation per year (based on age).
• We offer 15 days of additional vacation if you become a father, with 100% pay.
• You'll have access to thousands of professional and skills development materials from our extensive digital training palette.
• We offer regular internal training sessions and workshops.
• You can learn English and German, even with a native speaker.
• You'll have access to Percipio and Coursera courses.

Jelentkezési határidő: 2026-08-24

Jelentkezés a Magyar Telekom karrieroldalán keresztül.