Senior Software Developer (f/m/d) Managed Kubernetes

Job Description

IONOS, a leading European provider of cloud infrastructure, is seeking a Senior Software Developer to join their Managed Kubernetes team in Berlin. The successful candidate will play a crucial role in developing and maintaining the Managed Kubernetes product, serving both internal teams and external customers.

This role requires significant experience with Kubernetes architecture and a strong focus on operational aspects aligned with CKA principles. The Senior Software Developer will contribute to the evolution of IONOS's service architecture and infrastructure as code practices.

Role Involves:

• Designing, developing, and maintaining cloud-native applications in Golang.
• Architecting and implementing new features to enhance the Managed Kubernetes offering.
• Developing and maintaining the complete DevOps toolchain.
• Creating and maintaining Kubernetes operators, controllers, and Custom Resource Definitions (CRDs).
• Implementing monitoring, alerting, and observability solutions for Kubernetes workloads.
• Collaborating with cross-functional teams to improve platform reliability and performance.

Requirements:

• 5+ years of hands-on experience working with Kubernetes in production environments.
• Strong proficiency in Golang development.
• Experience with public cloud providers (AWS, GCP, Azure) or private cloud infrastructure.
• Deep understanding of Kubernetes architecture, API resources, and extension patterns.
• Proficiency with Helm and other Kubernetes package management tools.
• Experience designing and implementing Kubernetes operators and controllers.
• Expertise in container orchestration, networking, and security principles.
• Experience with observability stacks (Prometheus, Grafana, Loki, etc.) for monitoring and troubleshooting.
• Advanced Linux system administration skills.
• Strong knowledge of CI/CD pipelines and GitOps workflows.

IONOS offers:

• Hybrid working model with home office option.
• Flexible working hours through trust-based working hours.
• Subsidized canteen and various free drinks at some locations.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.