Senior Security Design Engineer in Southampton

Do you want to play a pivotal role in protecting the next generation of defence technologies? Are you excited by the challenge of influencing product cyber resilience at the cutting edge of fighter aircraft development?

Our Electronic Warfare (EW) and Future Combat Air Systems (FCAS) Design Integrity team is seeking a Senior Product Security Engineer. In this role, you will be responsible for the delivery of product security activities throughout the engineering lifecycle, working closely with multidisciplinary product teams across our Electronic Warfare and Future Combat Air business areas. You will play a key role in ensuring that security is embedded into the design and development of innovative defence solutions from concept through to delivery.

This position is working on a hybrid basis and requires you to work at least one day per week from one of our following sites; regular monthly travel to our Luton site will also be required.

• Drive Security Assurance through the full product lifecycle, ensuring every design is robust, compliant, and resilient.
• Provide independent Information Assurance (IA) reviews and risk assessments on a variety of complex, high-impact projects.
• Contribute to Leonardo’s UK-wide Security and IA community — shaping best practice and influencing security strategy.
• Review and provide guidance of security risk assessments, risk mitigation plans, mitigation gap analysis and preparation of security management documentation for system Accreditation, such as solution hardening guidance and security operating procedures.
• Liaison with Security Accreditors and Security Assurance Coordinators in support of security Accreditation.

Practical experience of ISO27001/27004/27005 and NIST Risk Management Framework (RMF). Experience of owning a security risk management system for highly regulated products based on recognised frameworks such as aerospace, nuclear, automotive, rail or oil and gas. Good understanding and appreciation of the Engineering development lifecycles and how the Product Security specialism aligns.

This role is subject to pre-employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS). An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, this could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV).

We offer a comprehensive, company-funded benefits package that supports your wellbeing, career development, and work–life balance. Whether you're looking to grow professionally, care for your health, or plan for the future, we’re here to help you thrive.

• Secure your Future: Benefit from our award-winning pension scheme with up to 15% employer contribution.
• Free access to mental health support, financial advice, and employee-led networks championing inclusion and diversity.
• Rewarding Performance: All employees at management level and below are eligible for our bonus scheme.
• Never Stop Learning: Free access to 4,000+ online courses via Coursera and LinkedIn Learning.
• Refer a friend: Receive a financial reward through our referral programme.
• Spend up to £500 annually on flexible benefits including private healthcare, dental, family cover, tech & lifestyle discounts, gym memberships and more.
• Flexible working: Flexible hours with hybrid working options. For part time opportunities, please talk to us about what might be possible for this role.

For a full list of our company benefits please visit our website. Leonardo is a global leader in Aerospace, Defence, and Security. Headquartered in Italy, we employ over 53,000 people worldwide including 8,500 across 9 sites in the UK. At Leonardo we are committed to building an inclusive, accessible, and welcoming workplace.

Contract Type: Permanent

Hybrid Working: Hybrid