Cyber Security & Assurance Engineer - Defence

Cyber Security & Assurance Engineer – Defence Location: Henlow, Bedfordshire – Hybrid Working Contract: Inside IR35 Duration: 7 December 2026 – 31 March 2027 with possible extensions Security Clearance: SC Clearance Required About the Role Infinity Systems Engineering is seeking an experienced Cyber Security & Assurance Engineer to support a major MOD Air Defence programme.

The successful candidate will provide specialist expertise across Cyber Assurance, Project Security and Security Engineering, supporting the development and assurance of mission-critical Defence radar capabilities. This is an opportunity to work alongside MOD stakeholders, engineering teams and industry partners, ensuring security requirements are effectively managed throughout the project lifecycle.

Key Responsibilities Lead and coordinate Cyber Assurance, Project Security and Security Engineering activities. Develop and maintain Security Cases, risk assessments and security management documentation. Apply Secure by Design principles, including threat and vulnerability assessments.

Review supplier security architectures, technical designs and assurance evidence. Identify security risks, compliance gaps and appropriate mitigation measures. Support security governance, technical reviews, working groups and project approvals.

Provide specialist advice on information assurance, protective security, cryptography and supply-chain security. Support security acceptance and transition into service. Essential Skills & Experience Proven experience in at least two of the following: Cyber Assurance, Project Security or Security Engineering , with the ability to integrate all three.

Experience developing Security Cases, security risk assessments and assurance documentation. Strong understanding of Secure by Design, cyber risk management and security controls. Experience reviewing technical designs, supplier documentation and compliance evidence.

Knowledge of security assurance processes within Defence, Government or other regulated environments. Strong communication, stakeholder engagement and technical reporting skills. SC Security Clearance required. Desirable Experience Knowledge of MOD / DE&S security processes, including GEAR, CADMID and DART.

Experience supporting radar, operational technology, command-and-control or mission-critical systems. Familiarity with security accreditation, supply-chain assurance and protective security. CISSP, CISM, CCP, Chartered status or equivalent professional qualifications.

Additional Information Hybrid working – approximately 1 day per week at Henlow and 1 day at other MOD, supplier or operational sites, subject to project requirements. Initial contract until 31 March 2027. Supporting a high-profile UK Air Defence capability programme.

Interested? Join Infinity Systems Engineering and contribute to the security and assurance of critical UK Defence capabilities. Apply today or contact Infinity Systems Engineering for a confidential discussion.

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