Senior Security Engineer

Responsibilities

• ? Lead the design and implementation of platform-wide security architectures and strategies.
• Drive secure SDLC practices including threat modelling, misuse cases, and risk analysis.
• Oversee security operations including vulnerability scanning, penetration testing, and assessments.
• Manage and optimise security tooling (Firewalls, VPNs, IDS/IPS, EDR).
• Lead incident response activities, ensuring swift mitigation and root cause analysis.
• Collaborate across engineering, architecture, and compliance teams to embed security-by-design.

Requirements

• Strong background in network security, SIEM, IDAM, endpoint protection, and cloud security.
• Knowledge of threat intelligence, IOC analysis, and detection engineering.
• Experience in secure SDLC, code review, and threat modelling (incl. misuse cases).
• Understanding of encryption, authentication, and risk management frameworks.
• Proven ability to lead, mentor, and influence senior stakeholders.
• It would be great if you have:
• Experience working with frameworks such as NIST.
• Exposure to cloud and container security (AWS, Azure, GCP, Kubernetes).
• Experience operating in air-gapped or highly restricted environments.
• Background in Defence or highly classified programmes.
• Employment Type: Permanent
• Location: Office based in Farnborough
• Security Clearance Level :DV Cleared
• Internal Recruiter: Jane
• Salary: To £65K Depending on experience.
• Benefits: 25 days annual leave with the choice to buy additional days, life assurance, pension, flex benefit, £5400 car allowance.
• Loved reading about this job and want to know more about us?
• Sopra Steria's Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the client's goal of National Security, and we operate in a unique and privileged environment.
• Why join us?
• You'll be part of a team delivering something genuinely new and impactful within UK Defence, with clear scope to shape security strategy and influence how secure platforms are built in the future.
• We offer long-term career development, exposure to complex programmes, and the opportunity to lead and grow a high-performing security function.
• If you're DV cleared and ready to take on a hands-on leadership role in a mission-critical environment, we'd love to hear from you.

Additional Information

Ready to help shape a first-of-its-kind secure collaboration platform for MOD and industry? We're looking for a Senior Security Engineer to join a growing Engineering & Architecture capability, delivering a cutting-edge, highly secure environment. This is a rare opportunity to lead security engineering at scale, influence strategy, and embed security-by-design across a complex, classified programme. You'll play a key role in designing, implementing and governing security capabilities, while mentoring a team and driving best practice across infrastructure, applications, and data. This role is based on site in Farnborough. You do need to hold current DV Clearance.

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