About this role
Location: Hybrid – Cologne (Rheinauhafen) — 3 days in the office, 2 remote (Tue + Thu)
Team: Engineering · Reports to CTO
Keep the world awake — build reliability at scale
ilert helps thousands of DevOps & IT teams detect, fix, and communicate incidents faster.
Our platform is mission-critical: customers rely on us 24/7 to keep their always-on businesses running.
As a Site Reliability Engineer at ilert, you’ll own the reliability, performance, and scalability of our core platform across AWS, Kubernetes, Kafka, and more.
Tasks Build & operate a highly available platform
Run and evolve our AWS-based infrastructure Operate and optimize self-managed Kafka, ClickHouse clusters and our Observability stack Ensure resilience, disaster recovery, and capacity planning across the stack
Improve reliability & performance
Build and maintain SLOs, SLIs, error budgets, and observability dashboards Debug production issues across layers (networking, Kubernetes, application, DB) Improve performance of our ingestion pipeline
Automation & tooling
Automate operations with Terraform, Helm, Kubernetes operators, and internal tooling Build tooling for safer deploys, blue/green rollouts, and automated verification Strengthen incident response workflows through deep collaboration with our AI SRE agent team
Security & compliance
Implement best practices for workload isolation, secrets management, IAM, and auditability Support our ISO27001 posture by automating controls and hardening our infrastructure
Cross-functional impact
Partner with Backend, AI, and Product teams to design reliable services Participate in on-call rotation Lead post-incident reviews and drive reliability improvements long-term
Requirements
3+ years experience as SRE, Platform Engineer, DevOps Engineer, or Infrastructure Engineer Strong hands-on experience with AWS, Kubernetes, Linux internals, networking, performance tuning Experience operating self-managed distributed systems, ideally Kafka or ClickHouse Strong understanding of observability Experience automating infrastructure with Terraform and CI/CD systems Fluent English (our working language); German optional
Benefits
🚀 Product-centric - 100 % focused on solving a mission-critical pain felt by every always-on business | 🏡 Hybrid freedom - 2 days remote by default; gorgeous Rheinauhafen roof terrace when you’re in town | 🕒 Focus > meetings - We time-box syncs, favour async docs and protect maker time | 🌴 28 days off - …plus public holidays | 🚲 Commute perks - subsidised public transport|