Senior Security Architect

Leonardo UK is seeking a Senior Cyber Security Architect to join their Cyber & Security Solutions Division. The role involves shaping secure-by-design architectures for complex customer environments and working in an agile, collaborative environment with a hybrid blend of home and on-site working.

Requirements

• Strong consulting and stakeholder-engagement skills
• Ability to communicate complex architectural concepts clearly
• Adaptability, reliability and high-quality delivery
• Collaborative mindset and willingness to support team development
• Recognised professional certifications in Cyber Security
• Deep understanding of TCP/IP, OSI layers, network protocols and associated architectural risks
• Ability to derive security requirements and architectural controls from high-level functional or mission objectives
• Experience decomposing complex systems into modular, secure architectural components
• Ability to lead architectural workstreams and influence delivery outcomes across time, cost and quality
• Strong stakeholder management, balancing technical clarity with empathy and business awareness
• Experience mentoring junior architects or consultants
• Ability to articulate the rationale for architectural security controls to both technical and non-technical audiences
• Technical depth in network, application, cloud or system security architecture, including control design and threat mitigation
• Understanding of the UK MOD, defence or national security domain is beneficial

Benefits

• Generous leave
• Award-winning pension scheme with up to 15% employer contribution
• Free access to mental health support, financial advice, and employee-led networks
• Bonus scheme
• Free access to online courses
• Referral programme
• Flexible working options