Salary: £71,910 - 71,910 per year Requirements: I am looking for a Principal Enterprise Security Architect with expertise in enterprise security architecture frameworks, cloud and IT technologies, risk mitigation, and relevant certifications such as CISSP or CISM. The ideal candidate should possess in-depth experience and knowledge in Cyber Security and IT, including business process design across multiple organisations and projects. A proven track record in secure delivery of national infrastructure, along with the ability to design and build practical security infrastructure based on contextualized risk understanding, is essential. I need someone with experience working with Enterprise Security Architecture frameworks (SABSA / TOGAF) and who has demonstrated leadership qualities, particularly in mentoring colleagues in Cyber Security. A thorough understanding of cloud architecture, integration technologies, and IT networking/vitalization technologies is required. Strong communication skills, a focus on quality documentation, and experience with the NCSC's Cyber Assurance Framework (CAF), NIST Cyber Security Framework (CSF), ISO 27001, and other relevant regulations are also necessary. Additionally, you should have a background in Critical National Infrastructure (CNI), understanding threats in government and critical infrastructure environments. A working knowledge of IT Security risk assessment processes and the ability to identify proportionate IT Security controls aligned with business objectives are important. Responsibilities: As the Principal Enterprise Security Architect, I will rely on you to lead the cyber security architecture and design function across our national-scale Position, Navigation, and Timing (PNT) programmes. You will develop an enterprise architecture and guiding principles that align with NPL's security strategy. Your responsibilities will include communicating with senior stakeholders, defining the vision and strategy for security architecture, and collaborating with the Enterprise Architecture team to ensure safe IT technology use. You will lead the technical cyber security design of systems and services across multiple PNT programmes, make influential business and architectural decisions, and stay updated on emerging cyber security principles and technologies. Additionally, you will engage with our customers in both the UK Government and private sectors on security risk and architectural decisions, while identifying current and emerging threats and designing mitigation strategies. Technologies: Architect Cloud Security TOGAF Embedded IaaS Support PaaS More: At NPL, we are committed to diversity and equality of opportunity, welcoming applications from candidates of all backgrounds. We believe our success stems from the diversity and talent of our people. We strive to nurture and respect individuals, treating everyone based on their unique merits and abilities. We also prioritize the health and well-being of our employees, offering flexible working arrangements and social activities to promote a positive work-life balance. Our culture is built around our core values, which shape our interactions and development practices. To ensure equal opportunities, we are open to making reasonable adjustments to the recruitment process. If you require any discussions around this, we encourage you to reach out. last updated 14 week of 2026