Lead Security Engineer

Job Description:

We’re on the lookout for a Lead Security Engineer with a passion for protecting cutting‑edge technology and driving Secure by Design principles into the heart of our innovations and product. If you’re ready to make a tangible impact on national security and global defence, we want to hear from you.

Location:

Basildon, Southampton, Luton or Bristol (on-site up to 4 days per week). Travel:
Occasional travel to UK and overseas customers, suppliers and other Leonardo sites.

You’ll lead the way in ensuring our systems and products meet the highest standards of security assurance, collaborating with some of the brightest engineers in software, systems, and electronics. Every day will bring new challenges — and the satisfaction of knowing your expertise keeps our world‑class solutions secure. Drive Security Assurance through the full product lifecycle, ensuring every design is robust, compliant, and resilient.

Develop and manage security protocols, tools, and processes that keep our technologies ahead of emerging threats. 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. Create and manage key artefacts such as Security Management Plans, Risk Assessments, and Remediation Action Plans.

We’re looking for an experienced professional who thrives on solving complex problems and has a proven track record in managing product security for highly regulated systems.

• Expertise in conducting risk assessments, applying security controls, and developing IA documentation
• Ability to interpret penetration test findings and create remediation action plans
• Awareness of UK Government Assurance frameworks

• Degree in Engineering (or related field)
• Certification such as CISSP, CISM, or equivalent

• Substantive experience in product security
• Hands‑on experience with risk management frameworks and best practice like NIST SP800‑37, ISO
  27001, and Secure by Design (ISN 2023/09)

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, which could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV). For more information and guidance, please visit

We offer a comprehensive, company‑funded benefits package that supports your wellbeing, career development, and work‑life balance.

• Generous leave with the opportunity to accrue up to 12 additional flexi‑days each year
• Benefit from an 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
• Eligible for a bonus scheme at management level and below
• Free access to 4,000+ online courses via Coursera and Linked In Learning
• Financial reward through a referral programme
• Spend up to £500 annually on flexible benefits including private healthcare, dental, family cover, tech & lifestyle discounts, gym memberships and more
• Flexible hours with hybrid working options

Flexible working: flexible hours with hybrid working options. For part‑time opportunities, please talk to us about what might be possible for this role.

Primary

Location:

GB – Southampton. Contract type:
Permanent. Hybrid Working:
Hybrid.