Overview
We are seeking a Security Architect Team Lead to take on a leading role in one of three specialist Security Architecture capabilities; Enterprise, Security, or Operational Technology. This role sits within a maturing cyber security function in a highly regulated, safety and mission critical environment and offers an exciting opportunity to make a real impact in developing our cyber capabilities in-house. As the organisation embarks on a digital transformation journey, the role must balance strategic vision with practical delivery, working across traditional IT and emerging OT landscapes. Security by design must be embedded from ideation to operation, with architecture acting as the bridge between business objectives and technical implementation. The Team Lead will be responsible for delivering expert design leadership, architectural oversight, and assurance to ensure digital systems and platforms across the business are secure by design, support business operations, and meet regulatory requirements. The role enables a consistent architectural approach through implementation of the ISO/ICT Security Architectural Framework and Team Leads must also coach and support the professional development of their team, while influencing cultural change across a complex stakeholder landscape.
Key responsibilities
* Provide day-to-day leadership to a defined team of the Security Architecture function (Enterprise, Security, or OT), acting as a subject matter expert and escalation point.
* Translate the organisational Security Architectural Framework into actionable designs and standards within the area and ensure consistent application across projects and programmes.
* Influence architecture and solution designs to ensure cyber security controls are embedded, scalable, and aligned with organisational policies.
* Lead architectural assurance across project delivery lifecycles, ensuring secure-by-design principles are implemented and evidenced.
* Engage proactively with delivery teams, internal customers, and governance forums to provide security architectural direction and insight.
* Contribute to the development of cyber security policies, standards, design patterns, and reusable artefacts in support of strategic goals.
* Develop the profession through mentoring, community of practice engagement, and contribution to capability frameworks.
* Support horizon scanning and risk-based prioritisation of technology solutions, identifying threats, vulnerabilities, and industry trends relevant to the nuclear and critical national infrastructure context.
Qualifications and experience
* Degree or equivalent experience in Cyber Security, IT, Engineering, or related field.
* Demonstrated leadership in security architecture, including responsibility for designs affecting enterprise, cloud, or OT environments.
* Proven experience in applying security frameworks and delivering secure design outcomes in complex, regulated environments.
* Strong understanding of the threat landscape and risk-based security design.
* Effective communicator with the ability to influence both technical and senior non-technical stakeholders.
* Familiar with Microsoft and Azure security technologies (e.g. Defender, Sentinel, M365 Security stack).
* Capable of translating policy and strategic intent into design blueprints and delivery guidance.
Desirable skills and knowledge
* Industry certifications such as CISSP, CISM, SABSA, TOGAF, or UK Cyber Security Council/CIISec accreditation.
* Experience with architecture frameworks (e.g. SABSA, TOGAF, Zachman).
* Familiarity with the UK Cyber Assessment Framework (CAF), especially Objective B.
* Experience of applying the Nuclear Industries Security Regulations (NISR) or similar safety-critical regulatory frameworks.
* Awareness of the Sellafield Ltd environment, operations, or similar critical infrastructure environments.
Benefits
* Annual bonus potential up to 15% based on company and personal performance.
* Defined contribution pension scheme with employer contributions up to 13.5% for a 7% employee contribution.
* 30 days annual leave plus bank holidays, with the option to purchase extra days and carry over up to 10 days per year.
* Paid sick leave and family-friendly policies.
* Cycle to work scheme and additional lifestyle benefits.
* Learning and development opportunities and broader rewards and recognition programs.
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