Cyber Security Architect

CYBER SECURITY ARCHITECT

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

UNLEASH YOUR POTENTIAL

We require a Senior Cyber Security Architect to support our customer projects within Civil & Devolved Government and Energy (DG&E) divisions in the UK. You must be based in the UK with the ability to hold SC Clearance or above, and you may need to apply for additional personnel security clearances. We are seeking individuals who can join a high‑performing team and confidently design and assure robust security architectures for our customers, delivering high assurance with minimal friction.

The focus is on simple, effective security that our customers value.

The role will support the delivery of secure, efficiently managed technical architectures for sensitive programmes. You will engage with third parties and customers, establishing and supporting ongoing growth. The position offers diversity in day‑to‑day activities and requires flexible operating parameters to support service in an agile environment, along with strong scheduling and prioritisation skills.

Are you ready for your next challenge?

The successful candidate will be expected to lead the design and assurance of secure architectures across multiple programme environments, most of which are in the cloud (AWS, Azure & Oracle), and offer expert guidance on security best practices. The ideal candidate will support the wider Leidos security capability, collaborating with a talented and multi‑faceted cyber team across our UK business, delivering on customer commitments, and seeking opportunities to embed security by design.

• Lead the design, implementation, and assurance of cybersecurity architectures for the protection of programme data, systems, and networks.
• Provide expert guidance on security architecture and design patterns for cloud and hybrid environments.
• Conduct risk assessments, threat modelling, and develop mitigation strategies for new and existing solutions.
• Ensure that data and infrastructure are protected by embedding appropriate security controls into architectural designs.
• Produce and maintain architectural documentation, reporting, and communication with relevant stakeholders.
• Embed the existing Security Architecture Framework and associated assurance approach into delivery to maintain overall (build) assurance of system and service security.
• Lead the delivery and assurance of security requirements as part of new demands, ensuring requirements are captured, traced, and assured through design, delivery, and service transition.
• Support the customers in the development of Zero Trust Network Architecture (ZTNA) strategies, including a roadmap to achieve target‑state capabilities.
• Lead security design and security requirements for Microsoft Entra , supporting current and shaping the future IDAM strategy and roadmaps.
• Lead the Security Architecture Forums, driving decisions, actions, and architectural governance outcomes for customer programmes.
• Lead engagement with the broader architect community to embed security‑by‑design into IT Governance, Technical Design Authority (TDA) processes.
• Where required (e.g., changing threat landscape or regulatory requirements), lead the development and implementation of security policies and supporting standards to ensure systems stay secure and compliant.

• British – Many of our projects have nationality restrictions.
• SC cleared (Or Eligible to undergo SC Vetting) – many of our projects have nationality restrictions.

• 2–4 years’ experience in a security architecture or senior security engineering role.
• 1–2 years in a technical leadership or architecture‑focused position.
• Relevant security architecture certifications (e.g., SABSA, TOGAF, CISSP‑ISSAP, Microsoft Certified: Cybersecurity Architect Expert, AWS Certified…