Cyber Secured Systems Administrator

Sanderson Government & Defence; Greater London; On-site; GBP 111,000 - 166,000; Full time

Benefits offered by this job

Long-term programme

Travel and accommodation covered

AI-enabled systems exposure

Secure environment

Job summary

Sanderson Government & Defence seeks an experienced Cyber Secured Systems Administrator to support a NATO-aligned programme delivering secure technology across the UK and Europe. The role covers secure systems administration in highly protected environments, with a focus on resilience and security-by-design principles.

You'll work as both a technical lead and hands-on engineer, partnering with security teams and stakeholders to deploy, operate and enhance secure infrastructures, including

Qualifications

• Active DV Clearance is required.
• Strong systems administration experience in 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.

Responsibilities

• Administer and maintain highly secure IT infrastructure and platforms.
• Support 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.

Skills

DV Clearance

Systems Administration

Security-by-Design

Cyber Security

Stakeholder Engagement

Job description

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

• 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

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.