Supports global infrastructure and security operations for a revenue-critical SaaS platform. Responsibilities include managing Windows and cloud systems, Kubernetes migration, Grafana observability, Cloudflare services, Microsoft 365 administration, identity and endpoint security, vulnerability management, compliance controls, incident response, documentation, automation, and on-call support. The role also contributes to infrastructure-as-code, containerisation, disaster recovery, and continuous improvement across a distributed, multi-region environment.