Site Reliability Engineer (#4479)

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