L3 Linux/Kubernetes support/specialist

Responsible for the performance, availability, and reliability of our cloud-based services and underlying infrastructure, acting as a critical technical subject matter expert. Main tasks include, but are not limited to: Manage, troubleshoot, and optimise containerised applications and infrastructure deployed on Kubernetes, Red Hat OpenShift, and OpenStack platforms. Serve as the Subject Matter Expert (SME) for core cloud infrastructure technologies, including advanced Linux (CentOS) system administration, Docker/Containers, and complex networking configurations. Lead the investigation and resolution of complex, high-severity customer issues, applying strong analytical knowledge to quickly diagnose problems across the entire cloud stack. Utilise your expertise to quickly identify root causes and implement effective, durable solutions for customer incidents. Prepare and conduct rigorous Root Cause Analysis (RCA) for critical incidents to identify systemic issues and prevent recurrence. Develop, test, and maintain robust automation scripts using Python and Ansible to streamline daily operational tasks and improve overall service efficiency. Identify and implement automation opportunities to reduce manual effort in maintenance and deployment activities. Provide end-to-end Escalation, Monitoring, and Emergency (EME) support, acting as a final escalation point to ensure service availability and meet SLAs. Liaise directly with the customer team and internal teams to understand requi