Infrastructure Engineer

Experis - ManpowerGroup; City Of London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading consultancy firm is seeking a Senior Infrastructure Engineer for a 12-month contract in London or Bristol, offering 80% remote work. The ideal candidate will have extensive experience with AWS, VMware, and containerized applications. You will manage and maintain critical infrastructure for a mission-critical application. Strong skills in Infrastructure as Code and networking are essential. Competitive day rate of £750-£850 is offered.

Qualifications

• Extensive experience with AWS and VMware environments.
• Strong knowledge of Kubernetes and Docker for containerization.
• Proficient in Infrastructure as Code using Pulumi.

Responsibilities

• Manage and evolve Kubernetes clusters.
• Maintain overlay networking for secure service communication.
• Implement Infrastructure as Code for AWS and on-prem resources.

Skills

AWS

VMware

Kubernetes

Docker

Networking

CI/CD

Tools

Grafana

GitHub Actions

Job description

Overview

Role Title: Infrastructure Engineer (SC Cleared)
Duration: 12 Months
Location: London or Bristol (80% Remote)
Rate: £750-£850p/d via Umbrella

The successful candidate will be a British national and will hold security clearance

The successful candidate will work within an agile digital delivery team developing and supporting a mission critical application for the UK Defence, with instances hosted on both a secure cloud platform (AWS) and on VMware-based on-prem hosting environments. The application is extant and live. You will be the senior infrastructure engineer responsible for managing and maintaining the infrastructure and network layer across these environments, including Infrastructure as Code (IaC), deployment automation, and efforts to improve scalability, stability, availability and security of the infrastructure. Experience with secure Cloud platform infrastructure (specifically AWS), secure on-prem hosting environments (virtualised on VMware), containerised applications (Kubernetes and Docker), administering and patching applications and operating systems, and configuring and maintaining networking infrastructure is required. Familiarity with supporting tools for Agile product delivery (JIRA, Confluence, Slack) is expected.

Key Responsibilities

• Manage and evolve Kubernetes clusters and associated components (etcd, kube-apiserver, kube-scheduler, kube-controller-manager, kubelet).
• Maintain overlay networking (Calico, kube-proxy) and ingress/mesh (Traefik, Istio) for secure, reliable service communication.
• Implement and maintain Infrastructure as Code using Pulumi for AWS and on-prem resources.
• Configure and manage networking infrastructure, including firewalls, VPNs, and access controls.
• Support GitOps workflows with Argo CD and Argo Rollouts for progressive delivery.
• Manage VMware-based on-prem environments, liaising with client teams for provisioning and patching.
• Ensure secure configuration and patching of OS and infrastructure components.
• Monitor system health, capacity, and performance using tools like Grafana.
• Manage backup and recovery solutions.
• Troubleshoot and resolve infrastructure-related incidents and participate in change management processes.
• Collaborate with developers, DevSecOps, and test engineers to ensure platform reliability and compliance.

Essential Technical Skills

• Cloud & Virtualization
  • AWS (EKS, IAM, S3, networking)
  • VMware (on-prem virtualization)
• Containerization & Orchestration
  • Kubernetes (EKS Auto Mode), containerd, Docker
  • Service mesh (Istio), ingress controllers (Traefik)
• Infrastructure as Code
  • Pulumi (YAML, Go, Python)
• Networking
  • Calico, kube-proxy, VPNs, firewalls, routing
• Secrets & Certificates
  • Vault, External Secrets Operator, cert-manager
• Observability
  • Grafana
• CI/CD & GitOps
  • GitHub Actions, Argo CD, Argo Rollouts
• OS & Security
  • Linux, patching cycles, CVE monitoring
• Database Awareness
  • PostgreSQL