Senior Site Reliability Engineer (all genders)

Introduction FACT-Finder builds product discovery technology for eCommerce and is trusted by leading online shops across Europe with its two products Next Generation and Infinity.

Both products are moving toward a modern, hybrid platform based on Kubernetes and Harvester – with the option to scale fully into the cloud in the mid-term. As a Senior Site Reliability Engineer (SRE), you make sure our systems stay fast, available, and scalable throughout this transformation.

You work closely with the Hosting team and experienced engineers, and actively shape our journey toward a modern SaaS company. Your mission You define and own SLOs, SLIs, and error budgets across both products and make data-driven decisions on reliability and performance.

You drive incident response: fast detection, clear communication, blameless postmortems, and meaningful follow-through. You consistently reduce manual work through automation and GitOps (e. g. Argo CD / Flux) and build out self-healing and self-service capabilities.

You support the development of an NG Search Operator (custom Kubernetes operator / CRDs) and the rollout of auto-scaling (HPA, VPA, KEDA, cluster autoscaler). You evolve our observability – metrics, logs, traces, alerting, and runbooks that actually help on call.

You plan capacity and cost across on-premise (Frankfurt, Stockholm) and cloud – including burst scenarios into the public cloud. You leverage AI tools to noticeably accelerate diagnosis, alerting, and operational workflows.

Your profile Experience as an SRE, infrastructure, or production engineer in a SaaS or platform environment – or a strong software/operations background with a clear drive to grow into an SRE role. Solid understanding of SLOs, error budgets, incident management, and observability.

Hands-on experience with Kubernetes and interest in cluster lifecycle, upgrades, and operator patterns. Experience with or strong interest in Harvester or comparable HCI/virtualization platforms (KubeVirt, vSphere/ES