Join a forward-thinking technology business delivering secure, high-performance solutions into Defence and National Security. As a Senior Site Reliability Engineer, you’ll play a key role in building resilient platforms that keep critical systems running smoothly.
Role Overview
- Package: Competitive salary + bonus, 25 days holiday + bank holidays, private medical, pension, training support
- Industry: Defence & National Security Technology
What You’ll Be Doing
- Designing, building, and maintaining reliable, secure infrastructure and core platforms
- Taking solutions from proof-of-concept through to production-ready deployments
- Leading on the development and improvement of monitoring, alerting, and management systems
- Embedding automation and DevOps best practices across environments
- Collaborating with engineers, developers, and stakeholders to deliver robust solutions
- Driving platform optimisation, performance tuning, and system reliability
- Carrying out security assessments, vulnerability checks, and system hardening
- Building and maintaining automation tooling using modern frameworks
- Troubleshooting complex issues across Linux, containers, and cloud environments
- Producing high-quality documentation and ensuring knowledge sharing across teams
- Mentoring team members and contributing to continuous improvement initiatives
Main Skills Needed
- Strong experience with Linux administration (e.g. Ubuntu) and Windows environments
- Proficiency in scripting (Python, Bash, PowerShell or similar)
- Hands‑on experience with DevOps and automation tools (e.g. Ansible, Terraform, CI/CD, Git)
- Knowledge of cloud platforms such as Azure or similar
- Experience with Infrastructure as Code and configuration management
- Understanding of containerisation (Docker, Kubernetes) and orchestration
- Familiarity with monitoring and observability tools (e.g. Splunk, Nagios)
- Solid grasp of security principles and system hardening practices
- Strong problem‑solving skills and ability to work across multiple projects
- Awareness of Agile methodologies and DevOps culture
- Experience mentoring or leading engineers within a technical environment
What’s in It for You
- Work on impactful, secure systems supporting critical national operations
- Exposure to modern technologies and innovative ways of working
- Strong focus on learning, development, and career progression
- Collaborative culture built on innovation, inclusivity, and quality
- Excellent benefits package including private healthcare and bonus scheme
- Access to on-site facilities including gym, café, and breakout spaces
- Opportunity to be part of a growing organisation with ambitious plans
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
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