Defence Security Lead & Assurance Specialist

MOTT MACDONALD; Manchester; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Private medical insurance

Private pension and life cover

Flexible benefits and bonus options

Employee ownership and collaboration

Job summary

Mott MacDonald is seeking a Defence Security Controller to provide expert security leadership for major Defence projects in the UK, overseeing project security, IT security, and governance. The role supports growth, compliance, and regulatory requirements while enabling collaboration across teams.

Working within a hybrid model, you will develop Security Management Plans, conduct security risk assessments, and lead audits.

Qualifications

• Current membership of the Security Institute (ASyI, MSyI or FSyI).
• Proven experience in Defence, uniformed services, or custodial environments.
• Strong ability to engage with senior stakeholders.
• Experience conducting security audits.
• High level of IT literacy for reports, audits, and presentations.
• Ability to analyse data and develop Security Management Plans.

Responsibilities

• Defence & Project Security: Act as Project Security Controller and provide security assurance across the project lifecycle.
• IT & Information Security: Manage Cyber Security Model, SbD, and DPIA submissions; advise on classification and secure IT systems.
• Corporate Security & Governance: Maintain Security Instructions and support audits and governance across Defence activities.
• Incident Management & Resilience: Investigate security incidents and support business continuity and crisis response.
• Training, Awareness & Security Culture: Design and deliver tailored security training for Defence and Aviation projects.

Skills

Security audits

Stakeholder engagement

IT literacy

Data analysis

Security planning

Job description

Mott MacDonald is seeking a Defence Security Controller to provide expert security leadership for major Defence projects in the UK, overseeing project security, IT security, and governance. The role supports growth, compliance, and regulatory requirements while enabling collaboration across teams.

Working within a hybrid model, you will develop Security Management Plans, conduct security risk assessments, and lead audits.