Principal Enterprise Security Architect in London

The National Physical Laboratory (NPL) is seeking a Principal Enterprise Security Architect to lead cyber security design and assurance for national‑scale Position, Navigation, and Timing (PNT) programmes; requiring expertise in enterprise security architecture frameworks, cloud and IT technologies, risk mitigation, and relevant certifications such as CISSP or CISM, while collaborating with senior stakeholders and ensuring alignment with NPL’s security strategy and compliance with government and industry standards.

This role will be responsible for the overall cyber security design, development and delivery across strategic PNT programmes. The role will be responsible for delivering assurance relating to activities of high complexity and risk, making decisions that will enable NPL to achieve its goals within its risk appetite.

The Principal Enterprise Security Architect will lead the Cyber Security pillar within the PNT Technical Design Authority, overseeing the implementation of solutions to ensure technology and digital solutions align with the enterprise security roadmap. This specialist position will report into the head of NPL’s Cyber Security Team, part of the NPL CIO function helping to provide all of NPL with day‑to‑day information risk consultancy, advice, and guidance. It will also support with prioritisation of risk mitigation activities, tracking of risk tolerance and reporting while supporting the design and implementation of the assurance framework.

• Lead the cyber security architecture and design function across NPL’s PNT programmes to deliver at National Scale.
• Oversee the design, delivery, and running of Cyber Operational capability that is dedicated for NPL's PNT programmes.
• Develop an enterprise architecture and guiding principles for the PNT programmes which aligns with the NPL’s security strategy.
• Communicate with senior stakeholders (across NPL and UK Government) and be responsible for defining the vision, principles and strategy for security architecture.
• Work alongside the Enterprise Architecture team to provide a consolidated and aligned architectural position to guide NPL in the safe use of IT technologies and systems.
• Lead the technical cyber security design of systems and services across multiple PNT programmes and projects/technologies, up to an organisational or inter‑organisational level.
• Make and influence important business and architectural decisions.
• Research, identify, validate and adopt new security technologies and methodologies that help NPL achieve its business objectives.
• Research and apply innovative security architecture solutions to new or existing problems, and be able to justify and communicate design decisions.
• Lead the engagement with NPL’s customers within both the UK Government and the private sector on security risk and architectural decisions.
• Understand the impact of decisions, balancing requirements and deciding between approaches based on the business requirements and risk appetite of NPL.
• Identify and communicate current and emerging threats, whilst designing security architecture elements to provide mitigation against those threats.
• Maintain an understanding of the emerging threat profile, work with the wider team to contextualise this threat in terms of NPL’s own business/delivered programmes and ultimately develop a prioritised mitigation strategy.
• Develop a security posture which delivers this mitigation through both technical implementation, operating procedures and business processes.

Essential: Referenceable, in‑depth knowledge and experience in Cyber Security and IT; including business process design. Ability to work with Enterprise Security Architecture frameworks (SABSA / TOGAF). Designing and constructing business processes, functions and organisational structures using appropriate tools/modelling languages. Significant knowledge of cloud architecture and integration technologies. Understanding of IT, networking and virtualisation technologies. Proven ability to define architecture roadmaps, associated strategies, including design analysis. In‑depth assessment of IT systems, cloud offerings (IaaS, PaaS and SaaS), services and IT Security controls to provide an independent view of their compliance and effectiveness with Security Policy, IT Security standards and external regulatory requirements. Assessing architectural designs to determine whether the relevant IT Security controls have been identified in line with business objectives and risk mitigation. Experience of cross‑security domain approaches and solutions. A working knowledge of IT Security risk assessment processes and ability to identify a proportionate set of IT Security controls, aligned with business objectives. Excellent communicator, verbal and written, with the ability to explain complex issues to a variety of stakeholders; technical and non‑technical.

Desirable: Secure delivery of scale national infrastructure and subsequent managed service; including the ability to design and build practical security infrastructure within this environment, based on a contextualised understanding of risk. Experience of operating in Critical National Infrastructure (CNI) and the requirements around cyber security and operational resilience. Understanding of threats in a government, mission and critical national infrastructure environments. Analysis, creation and compilation of relevant documentation determining the compliance level of systems and services, technical security controls with applicable certification, accreditation, and internal policy requirements. Stakeholder engagement; promoting a mind‑set of developing secure systems, transferring knowledge of security standards/processes and acting as a subject‑matter expert (SME). Experience of leading and mentoring colleagues. Ability to work in small teams, across highly‑specialised technology areas with diverse projects.

Essential Cyber Security Certifications: One of the following:

• Certified Information Security Systems Professional (CISSP)
• SABSA Chartered Security Architect (SCF)
• Certified Information Security Manager (CISM)

• CompTIA Security+
• Certified Cloud Security Professional (CCSP)
• Systems Security Certified Practitioner (SSCP)
• GIAC Security Essentials Certification (GSEC)
• Certified Ethical Hacker (CEH)
• Certified in Risk and Information Systems Control (CRISC)
• ISO 27001 Lead Auditor
• ISO 27001 Lead Implementer
• Certified Information Systems Auditor (CISA)

We actively recruit citizens of all backgrounds, but the nature of our work in specific departments means that nationality, residency and security requirements can be more tightly defined than others. You will be asked about this throughout the recruitment process. To work at NPL, you will need to obtain BPSS security clearance. However, to work in this role in the Time & Frequency department, you will need to have an SC clearance with no restrictions, or you must have the ability to obtain an SC clearance. Please note: Applications will be reviewed, and interviews conducted throughout the duration of this advert therefore we may at any time bring the closing date forward. We encourage all interested applicants to apply as soon as practical.