Site Reliability Engineer

We are looking for an experienced Site Reliability Engineer to ensure the stability, scalability, and operational excellence of a Kubernetes-based platform running in a hybrid environment. 

The project is entering a pivotal phase, with a major go-live planned for mid-February and a target audience of 75,000 users. User onboarding is already underway, with over 5,000 users connected and 15,000–20,000 expected to be active by year-end. While the system is stable, we anticipate increased activity and new challenges in January, February, and after the go-live—making this an exciting opportunity to make a real impact. The role focuses on performance optimization, scaling strategies, observability, and reliability engineering.

Required Skills:

• 4+ years of experience as SRE / DevOps Engineer


• Strong hands-on experience with Kubernetes in production


• Experience working with hybrid infrastructure (on-prem + cloud)


• Solid knowledge of PostgreSQL performance tuning and scaling


• Experience with Qdrant or other vector databases


• Experience with Helm, Kubernetes autoscaling, and resource optimization


• Familiarity with observability stacks (Prometheus, Grafana, ELK/Loki)


• Understanding of performance engineering and load testing


• Experience with Linux systems and networking


• Strong troubleshooting and incident-management skills

Nice to Have:

• Experience with STACKIT or other sovereign clouds


• Experience with PgBouncer


• Knowledge of SRE practices (SLO/SLI)


• Experience in regulated or public-sector environments


• German language skills

Responsibilities:

• Operate and optimize hybrid infrastructure (on-prem & STACKIT)


• Manage and scale Kubernetes clusters


• Optimize Helm charts, resource usage, and autoscaling


• Conduct performance, load, and stress testing


• Ensure reliability, availability, and monitoring of production systems


• Tune and operate PostgreSQL


• Operate and optimize vector databases (e.g. Qdrant)


• Implement monitoring, logging, and alerting


• Support incident response and capacity planning