Lead Security Engineer Consultant

Job Description

At Leonardo’s Cyber and Electromagnetic Activities (CEMA) sector, we don’t just keep pace with the future — we help define it. We ensure seamless interoperability with partners, allies, and NATO, delivering the right information, to the right place, at the speed of relevance.

Basildon, Southampton, Luton or Bristol (on‑site up to 4 days per week)

Occasional travel to UK and overseas customers, suppliers and other Leonardo sites

• 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 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). Additional 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

• Time to Recharge:
  Enjoy generous leave with the opportunity to accrue up to 12 additional flexi‑days each year.
• Secure your Future:
  Benefit from our award‑winning pension scheme with up to 15% employer contribution.
• Your Wellbeing Matters:
  Free access to mental health support, financial advice, and employee‑led networks championing inclusion and diversity (Enable, Pride, Equalise, Armed Forces, Carers, Wellbeing and Ethnicity).
• 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 Linked In Learning.
• Refer a Friend:
  Receive a financial reward through our referral programme.
• Tailored Perks:
  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.

GB - Southampton

GB - Basildon, GB - Bristol - Coldharbour Lane, GB - Luton - Cap. Green 300

Employee‑Permanent

Hybrid