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Platform engineers

Cheltenham
Mphasis
Platform engineer
Posted: 6 June
Offer description

Required Skills

* BS/MS degree in Computer Science, related technical field, or equivalent with 8+ years of industry experience
* 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


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)


Job Description

* Design, build and operate Envoy and Kong gateway infrastructure serving production traffic across multiple lines of business
* Develop Go-based control-plane services - Ingress Registry, xDS controllers, Session Manager, Context Propagator
* Implement and maintain OPA policy bundles for coarse-grained authorization at the gateway layer
* Build and extend OpenTelemetry instrumentation pipelines (OTel Collector, Dynatrace OTLP ingest, Splunk SIEM forwarding)
* Manage GitOps-driven deployments via ArgoCD and Helm across multi-cluster Kubernetes environments
* Automate WAF rule management across Akamai and Cloudflare using WAF-as-code patterns
* Contribute to the platform operator console (TypeScript/React) for route management, drift detection, and session visibility
* Collaborate with LOB teams to onboard routes and migrate traffic from legacy ingress infrastructure
* Participate in incident response, runbook development, and production readiness reviews
* Champion software engineering best practices - code review, testing, documentation, and observability-first design

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