Senior Site Reliability Enigneer

Kontakt.io is hiring a Senior Site Reliability Engineer to join their Infrastructure Engineering team in Kraków. The role focuses on driving the reliability, scalability, and performance of a healthcare platform with a 99.99% uptime target, working on AWS-based infrastructure and observability strategies.

• Experience in Site Reliability Engineering, Cloud Infrastructure, or Platform Engineering.
• Software engineering experience building production-grade systems using Java, Python, Go, or similar.
• Experience working on high-traffic, mission-critical platforms in SaaS, IoT, or healthcare.
• Strong expertise in AWS, Kubernetes, and distributed system architecture.
• Hands-on experience with monitoring, logging, and observability tools such as Prometheus, OpenTelemetry, Datadog.
• Knowledge of CI/CD automation, GitOps workflows, and infrastructure-as-code tools like Terraform, Helm, ArgoCD.
• Experience in incident response and blameless postmortems.
• Understanding of networking, access control, and security practices in regulated environments (HIPAA, SOC 2 awareness is a plus).
• Collaborative mindset to work across teams and contribute to engineering standards.

Nice to have:

• Experience with Kafka, ArgoCD, Karpenter.

• Design and implement scalable, fault-tolerant infrastructure and services on AWS and Kubernetes.
• Collaborate with Product, Engineering, and Security teams to align SRE work with platform and business priorities.
• Define and drive adoption of SLIs, SLOs, and SLAs to maintain consistent performance and high reliability.
• Own and improve observability using Grafana, OpenTelemetry, and related tools.
• Build and maintain infrastructure as code using Terraform and contribute to GitOps best practices.
• Participate in incident response and on-call rotation, including writing postmortems and remediation efforts.
• Mentor junior and mid-level SRE engineers through code reviews and knowledge sharing.
• Contribute to the reliability roadmap for high-throughput, real-time healthcare systems.
• Drive continuous improvements in CI/CD pipelines, service ownership, chaos engineering, disaster recovery, and secure deployments.