Principal Defence Consultant - Cyber Security

Are you an experienced cyber security professional with a passion for protecting national defence capabilities?

Join a leading consultancy at the forefront of supporting the UK’s defence sector, where your expertise will directly contribute to the security and resilience of mission-critical ICT systems across the Armed Forces and wider defence community.

In this high-trust role, you’ll design and deliver advanced cyber security solutions for complex defence programmes—projects that underpin operational readiness, secure classified information, and protect national interests. Working closely with senior military and civilian stakeholders, you’ll play a key part in shaping the cyber posture of the UK’s defence infrastructure.

You’ll provide technical leadership across engagements, mentor junior consultants, and ensure compliance with MOD standards, including NCSC guidance, and other key frameworks. Whether supporting front-line operations or strategic defence initiatives, your work will have a lasting impact on national security.

In return, you’ll benefit from bi-annual salary reviews, a structured professional development pathway, and access to industry-recognised training and certifications—ensuring you stay at the cutting edge of cyber defence as your career advances.

Make a real impact by contributing to the defence and protection of the UK’s critical national infrastructure and essential services, systems that underpin national security and support millions of lives. In this role, you’ll work on high-priority defence programmes, directly supporting operational capabilities and safeguarding sensitive information. You’ll collaborate with senior stakeholders across the defence and wider public sector landscape, gaining first-hand experience in complex, high-assurance environments where the stakes are real and the outcomes matter.

As part of a consultancy that invests heavily in its people, you'll benefit from structured career progression, access to top-tier training, and industry-recognised certifications tailored to defence and government requirements. With opportunities to work on-site with clients across the UK, you’ll gain unique exposure to the broader national security ecosystems, building both your technical expertise and your understanding of how cyber security supports the UK's strategic defence objectives.

• Minimum of 5 years’ experience working with complex ICT systems, ideally within defence, national security, or other high-assurance environments
• Strong understanding of enterprise ICT architecture, security principles, and risk management in line with government and defence standards.
• Confident communicator with the ability to engage effectively across technical teams, senior stakeholders, and cross-government partners.
• Proactive and analytical approach to problem-solving, with the ability to operate independently in fast-paced, mission-critical settings.
• Clear commitment to ongoing professional development, with a passion for staying ahead of emerging threats and evolving technologies.