Infrastructure & Security Engineering Lead Infrastructure & Security Engineering Lead

Infrastructure & Security Engineering Lead

Location:

On-site (Cheltenham – Onsite)
Salary: 70,000 – 90,000 + Bonus + Excellent Benefits Security Clearance:
Must be eligible and willing to undergo UK Security Clearance Overview We ’re supporting an innovative research and development organisation in the search for an Infrastructure & Security Engineer to take ownership of its internal IT infrastructure, security operations, and business systems.

This is a unique opportunity to work in a highly technical environment where you’ll combine infrastructure engineering, cloud administration, security operations, networking, compliance, and business IT. You’ll play a key role in shaping the future of the organisation’s internal platforms while delivering projects that directly support cutting-edge cyber security research activities.

If you’re someone who enjoys solving complex technical challenges, taking ownership of systems, and continuously learning new technologies, we’d love to hear from you.

The Role As the Infrastructure & Security Engineer, you’ll be responsible for maintaining and improving the organisation’s core infrastructure, ensuring systems remain secure, resilient, and efficient.

Working within a small, highly skilled team, you’ll have significant autonomy and the opportunity to lead infrastructure projects from concept through to implementation.

This role is ideal for someone with a strong systems administration background who is looking to broaden their exposure across cloud, security, networking, and emerging technologies.

Key Responsibilities Manage Windows and Linux endpoints, including provisioning, patching, compliance, and endpoint management

Administer Microsoft 365, identity management, SSO integrations, certificates, and user lifecycle processes

Operate and enhance security tooling covering monitoring, vulnerability management, endpoint security, and remediation

Coordinate external penetration testing activities and security improvement programmes

Maintain and develop AWS cloud infrastructure and supporting business systems

Own backup, disaster recovery, and business continuity processes

Lead Cyber Essentials and Cyber Essentials Plus certification activities

Maintain infrastructure documentation, asset management, and IT governance processes

Identify and deliver improvements that enhance security, resilience, and operational efficiency

Project Work You’ll have the opportunity to lead and contribute to a variety of innovative projects, including:

Designing and implementing services for standalone and isolated networks

Building and deploying centralised authentication solutions

Developing and maintaining self-hosted LLM infrastructure

Designing secure environments to support advanced research activities

Implementing new infrastructure and security tooling

Driving continuous improvement across cloud, infrastructure, and operational platforms

What We’re Looking For We understand that no candidate will tick every box. We’re more interested in strong technical fundamentals, a proactive mindset, and a willingness to learn.

Experience in some of the following areas would be highly beneficial:

Windows and Linux system administration

Microsoft 365 and Azure AD / Entra ID Endpoint management tools such as Microsoft IntuneAWS cloud infrastructure

Networking and firewall administration

Vulnerability management and endpoint security

Identity and access management

Backup, disaster recovery, and business continuity planning

Security compliance frameworks, including Cyber Essentials Infrastructure automation and scripting

General cyber security best practices

What You’ll Bring Strong troubleshooting and problem-solving skillsA hands-on approach and willingness to take ownership

Curiosity and enthusiasm for learning…