Senior Systems Engineer - Secure Cloud & Infrastructure

Salary: £? - ? per year

Requirements

• 5+ years experience in systems engineering, infrastructure engineering, platform engineering or a similar role.
• Demonstrable experience delivering infrastructure within defence, aerospace or highly regulated environments.
• Active SC Clearance.
• Sole British National.
• Strong experience administering Microsoft Azure services and infrastructure.
• Experience supporting hybrid cloud and on-premises environments.
• Experience working within classified or secure environments.
• Strong knowledge of Windows Server and Linux operating systems.
• Experience with enterprise virtualisation platforms such as VMware or Hyper-V.
• Strong understanding of networking technologies, including TCP/IP, DNS, DHCP, VPNs, load balancing, firewalls and routing.
• Hands-on experience administering Kubernetes clusters.
• Practical experience supporting Red Hat OpenShift environments.
• Experience supporting large-scale enterprise container platforms.
• Experience with Infrastructure as Code tools such as Terraform, Bicep, ARM Templates or Ansible.
• Strong scripting and automation skills using PowerShell, Bash, Python or similar.
• Experience with monitoring, logging and observability platforms.
• Experience with backup, recovery and disaster recovery solutions.
• Strong troubleshooting, root cause analysis and problem-solving skills.
• Excellent communication and stakeholder management skills.
• Ability to mentor and support junior engineers.
• Experience working within Agile, DevOps or Platform Engineering environments.
• A Bachelors degree in Computer Science, Information Technology, Systems Engineering or a related discipline is desirable, alongside significant professional experience in infrastructure, systems, cloud or platform engineering.

Responsibilities

• Design, deploy and support enterprise infrastructure across cloud and on-premises environments.
• Administer and optimise Microsoft Azure services and cloud-native infrastructure.
• Manage and maintain Windows Server and Linux environments.
• Deploy, configure and support Kubernetes and OpenShift platforms.
• Implement Infrastructure as Code (IaC) and automation solutions.
• Ensure infrastructure meets security, compliance, resilience and availability requirements.
• Monitor system performance, capacity and operational health.
• Support backup, disaster recovery and business continuity capabilities.
• Work with security teams to implement secure-by-design infrastructure solutions.
• Troubleshoot and resolve complex incidents, problems and technical issues.
• Maintain technical documentation, standards and operational procedures.
• Mentor junior engineers and contribute to knowledge sharing.
• Support infrastructure transformation, cloud migration and technology refresh programmes.

Technologies

• ARM
• Ansible
• Azure
• Bash
• Cloud
• DevOps
• Hyper-V
• Support
• Kubernetes
• Linux
• Load Balancing
• OpenShift
• PowerShell
• Python
• Security
• TCP/IP
• Terraform
• VMware
• Windows
• Architect
• Istio
• ITIL

More

We are seeking an experienced Senior Systems Engineer to support a secure digital platform within a highly regulated defence and aerospace environment. The role is based in Reading with 3 days onsite and 2 days remote, on a 6-month+ contract inside IR35. We provide technical leadership across hybrid environments, ensuring systems are secure, resilient, scalable and aligned with business and programme objectives. You will work across Microsoft Azure, on-premises infrastructure, virtualisation, storage, networking and container platforms including Kubernetes and Red Hat OpenShift, partnering closely with security, architecture, application and service delivery teams to support business-critical services while driving automation, modernisation and operational excellence.

last updated 34 week of 2026