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/ESXi OpenStack).
• Familiarity with GitOps (Argo CD / Flux) container storage (Longhorn Ceph) and Kubernetes networking (load balancing ingress).
• Knowledge of auto-scaling primitives (HPA VPA cluster autoscaler KEDA) and capacity planning on-prem and in the cloud.
• Understanding of networking in production-grade datacenters (incl. VLAN).
• A strong automation instinct and a mindset to structurally eliminate toil.
• Practical experience using AI tools in day-to-day operations.
• Fluent English; German is a plus.

THE JOY OF WORKING WITH US

• Impact from day one: Your work directly influences the revenue of leading eCommerce brands across Europe.
• Modern tech stack: Kubernetes Harvester GitOps auto-scaling and an exciting path toward the cloud with room to build things right.
• AI-first mindset: We use AI as a real part of our daily work not as a buzzword.
• Ownership & growth: Clear responsibility short decision paths and the opportunity to actively shape your role.
• Flexible work: Hybrid work model with a focus on outcomes.
• Strong team: Experienced engineers an open feedback culture and an environment where reliability is treated as a real engineering discipline.

Job Location

Berlin Munich Pforzheim or Stockholm (Hybrid)