Platform Engineer

Role: Platform Engineer, Location: Glasgow (Onsite all 5 days) Role Type : Contract (Inside IR35) Required Skills: * 5+ years hands-on experience with Envoy Proxy (xDS/ADS, ext_authz, HTTP/2, gRPC, WebSocket) and/or Kong API Gateway (plugin development, DB-less mode, Admin API) * Strong Go development skills - control-plane services, gRPC APIs, Kubernetes controllers (client-go), concurrency patterns * Production Kubernetes experience (EKS and/or on-prem clusters) - Helm charts, HPA, PodDisruptionBudgets, NetworkPolicy, namespace isolation, ArgoCD GitOps * Deep understanding of OAuth 2.0 / OIDC / PKCE flows, DPoP sender-constrained tokens, mTLS, and session management patterns * Experience with OPA (Open Policy Agent) policy authoring in Rego and sidecar deployment patterns * Hands-on with OpenTelemetry (traces, metrics, logs), Dynatrace, and Splunk SIEM integration * Working knowledge of CDN/WAF platforms (Akamai Ion, Kona, Cloudflare) and WAF-as-code automation * Experience with PostgreSQL (HA, connection pooling, PITR) and Kafka (MSK, Schema Registry, DLQ patterns) * Familiarity with DNS steering (GeoDNS, Akamai GTM, health-check routing) and TLS certificate lifecycle (cert-manager, HSM/KMS) * Strong CS fundamentals - networking (L3-L7), distributed systems, data structures & algorithms * Experience building high-volume, low-latency, resilient infrastructure services * BS/MS degree in Computer Science, related technical field, or equivalent with 8+ years of industry experience Nice to have: * TypeScript/React experience for operator dashboard development * AWS infrastructure experience (EKS, MSK, Lambda, Direct Connect, Network Firewall) * Bitbucket Pipelines CI/CD and GitOps delivery workflows * Experience with CAEP (Continuous Access Evaluation Protocol) or similar session revocation mechanisms * Background in identity platforms (ForgeRock, SAML federation, token exchange patterns)