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Senior Site Reliability Engineer (all genders)

Fact Finder · Berlin

On-siteSeniorPosted 23 Aug 2026

What this role requires

7 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: Harvester, English (B2), German. Worth having, but their absence is not what gets a CV filtered out.

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Job description

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.

Read the full description (20 more sections)

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)

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