Site Reliability Engineer (SRE) - Defence / National Security

Location: Farnborough

Salary: £75k

Full - Time (3 days a week onsite)

We are looking for an experienced Site Reliability Engineer to join a team working in defence and national security environments. This is a hands-on role focused on building secure, automated, and highly reliable platforms, combining engineering, design, and DevOps principles.

You’ll work closely with platform engineers, infrastructure teams, operational stakeholders, and project managers to take requirements from early design and proof-of-concept through to production. This role is ideal for someone curious, detail-oriented, and comfortable in complex, regulated environments, with a passion for automation, resilience, and secure-by-design infrastructure.

The Role:

Designing, delivering, upgrading, and maintaining core platforms, services, and automations

Building and improving monitoring, alerting, and observability platforms

Designing secure infrastructure using automation-first approaches

Creating and productionising proofs of concept for new tools and technologies

Diagnosing and resolving performance, reliability, and availability issues

Supporting architecture, documentation, and non-functional requirements

Mentoring engineers and helping improve DevOps and SRE practices

Essential experience:

Strong experience with Linux (Ubuntu) and Windows Server

Good knowledge of Linux administration

Skilled in scripting: Bash, Python, PowerShell, or similar

Experienced with DevOps/automation tools: Ansible, Terraform, CI/CD, Git

Familiar with cloud platforms, especially Azure

Knowledge of configuration management (e.g., DSC)

Excellent problem-solving skills

Willingness to learn new technologies

Able to handle multiple projects in a fast-paced environment

Desirable experience:

Strong problem-solving and analytical skills

Experience with Infrastructure as Code (IaC) - Terraform, ARM templates

Knowledge of security best practices

Configuration as Code: DSC, Ansible, or similar

Linux (Ubuntu, RHEL/CentOS) and Windows Server administration

Containerisation & orchestration: Docker, Kubernetes

Version control and configuration management: Git/GitLab

Project and issue tracking tools: JIRA or similar

Cloud platforms: Azure / Azure Stack Hub

Monitoring and alerting: Nagios, Splunk, or similar

Strong communication and documentation skills

Experience with large-scale system deployment

Advocate for DevOps and Agile practices

Able to work closely with teams and customers

Benefits:

A collaborative, inclusive culture with strong benefits including competitive pay, bonus, pension, private healthcare, generous leave, professional development, wellbeing perks, and modern on-site facilities

UK Security Clearance

Due to the secure nature of the position and working environment, you must be a UK sole national and either have, or be eligible to obtain Security Clearance .

To apply or find out more information on the role please send your CV

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