Cyber Secured Systems Administrator

Location: South East London

Cyber Secured Systems Administrator Competitive Day Rate | Long-Term Contract 1-Year Rolling Contract (Expected 3-5 Year Programme) London & Germany Active DV Clearance Required An exciting opportunity has arisen for an experienced Cyber Secured Systems Administrator to support a major NATO-aligned programme delivering secure technology solutions across the UK and Europe. Working within highly secure environments, you will play a key role in the administration, delivery, and enhancement of critical systems, helping to ensure platforms are resilient, secure-by-design, and capable of supporting emerging technologies, including AI-enabled capabilities.

This role requires an individual who can operate as both a technical lead and hands-on engineer, combining strategic thinking with practical delivery expertise.

The Role As a Cyber Secured Systems Administrator, you will be responsible for supporting and administering secure systems across complex environments while ensuring security principles are embedded throughout the entire system lifecycle. You will work closely with programme stakeholders, security teams, and technical specialists to maintain operational systems, deliver new capabilities, and support secure infrastructure deployments across international locations. The role involves a rotational work pattern, with periods working on-site in London and supporting activities in Germany as required.

Key Responsibilities Systems Administration & Engineering Administer and maintain highly secure IT infrastructure and platforms. Support the deployment, configuration, and maintenance of secure systems. Monitor system health, performance, availability, and security. Troubleshoot and resolve infrastructure, platform, and security-related issues. Ensure systems remain compliant with security and operational requirements. Secure-by-Design Delivery Embed Secure-by-Design principles across systems and services. Work closely with security architects and stakeholders to implement security controls.

Support security assurance, risk management, and compliance activities. Contribute to the development of security documentation, standards, and operating procedures. AI & Emerging Technologies Support AI-enabled systems and infrastructure environments. Assist with the deployment and integration of new technologies within secure environments. Provide technical expertise on systems supporting advanced analytical and emerging technology capabilities. Identify opportunities to improve operational efficiency through automation and innovation.

Stakeholder Engagement Engage with technical and non-technical stakeholders across the programme. Provide technical leadership and subject matter expertise. Support both strategic planning activities and hands-on delivery requirements. Collaborate with multinational teams across UK and European locations. Essential Skills & Experience Active DV Clearance. Strong Systems Administration experience across secure environments. Experience delivering and supporting secure infrastructure solutions. Knowledge of Secure-by-Design principles and security best practices.

Strong understanding of cyber security concepts and security controls. Experience supporting complex enterprise systems and platforms. Ability to operate in both technical leadership and hands-on engineering capacities. Strong troubleshooting, analytical, and problem-solving skills. Excellent stakeholder engagement and communication skills. What's on Offer? Long-term programme with expected duration of 3-5 years. 1-year rolling contract structure. Opportunity to support critical national and international security programmes.

Fully expensed travel, accommodation, and transport. Exposure to cutting-edge technologies including AI-enabled systems. Work alongside senior defence and security professionals within a highly secure environment. Reasonable Adjustments:
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