Infrastructure Engineer (Performance Optimization)Role Type: 6-Month Contract (Remote, UK-based)Rate: Upto £650 Per Day (Umbrella / Inside IR35)Role SummarySeeking a hands-on Infrastructure Engineer to join a newly formed Performance Optimization Squad within a massive-scale production platform. Key ResponsibilitiesExecute Optimizations: Drive well-scoped initiatives to completion, including compute resource rightsizing, JVM tuning, and workload placement.Build Automation: Implement infrastructure changes and build automation to scale impact across the fleet.Collaborate: Work within a focused team of 4 engineers, a data analyst, and an engineering manager.Core RequirementsExperience: 5 years in Infrastructure, Platform, or Backend engineering roles.Kubernetes: Solid experience with Kubernetes (ideally GKE).Coding: Proficiency in at least two of: Java, Go, or Python (strong scripting/automation skills preferred).Cloud Platform: Comfortable with GCP (compute, networking, IAM, cost monitoring).Tooling: Familiarity with IaC (Terraform, Helm) and CI/CD pipelines.Preferred QualificationsBackground in Reliability Engineering / SRE (SLOs, error budgets, safe rollouts).Experience with JVM-based services at scale.Familiarity with GCP Billing or BigQuery cost exports.Randstad Technologies is acting as an Employment Business in relation to this vacancy.