Job Title: Security Solution Architect Location: UK Wide (offices in London, Northampton, Ipswich, Glasgow, Yorkshire days per month onsite as needed) Type: Permanent Overview: We're hiring a Security Solution Architect to join a forward-thinking and fully in-house cyber security function at a major critical national infrastructure organisation which have a meaningful impact. With full control of their cyber security strategy and a culture of collaboration and innovation, this business offers a unique opportunity to help shape and embed future-ready security solutions. As part of a significant transformation programme, you'll design and develop secure, scalable architectures across IT and OT environments - supporting both the enterprise and industrial sides of the organisation. Key Responsibilities: Own and develop security architecture and technology roadmaps Design high- and low-level architecture for security solutions across cloud, on-prem, and OT environments Provide delivery assurance and technical guidance throughout implementation phases Align solutions with enterprise architecture and compliance requirements (e.g. ISO 27001, NIS, IEC 62443) Work cross-functionally with internal teams and external partners to ensure security is embedded by design Essential Skills: Deep understanding of infrastructure, networking, and cloud security principles Experience designing secure systems and documenting architecture standards Strong grasp of security frameworks (e.g. TOGAF, NIS, CIS Controls) Comfortable influencing a range of technical and non-technical stakeholders Desirable: Exposure to OT or critical national infrastructure environments Security certifications such as CISSP, SABSA, SANS etc. ADZN1_UKTJ