Head of Security Architecture
<p><b>Salary: £105,000 - 105,000 per year</b></p>
<b>Requirements:</b>
<ul><li>Proven leadership in security architecture within a complex enterprise environment</li><li>Experience in critical infrastructure, utilities or the public sector</li><li>Deep, holistic knowledge of cyber / information security</li><li>Strong understanding of secure design, threat modelling, cloud and on-prem architectures, identity platforms</li><li>Demonstrated ability to influence senior stakeholders and lead teams</li><li>Strong familiarity with frameworks such as NIST, ISO 27001, SABSA, TOGAF</li><li>Broad experience across cyber security domains (e.g. IAM/IDAM)</li><li>Relevant degree and certifications (CISSP, CISM, CCSP, SABSA, TOGAF)</li></ul>
<b>Responsibilities:</b>
<ul><li>Own, define and continuously evolve the Security Architecture Strategy and its supporting frameworks.</li><li>Embed secure-by-design principles across Digital, ensuring security requirements are incorporated through delivery and into operations.</li><li>Lead the development, governance and optimisation of security controls across all programs, ensuring they are effective, measurable and aligned to industry frameworks and regulatory expectations.</li><li>Oversee the integration of threat modelling, risk assessment and secure design principles into Digital programmes, projects and service lifecycles.</li><li>Act as a senior strategic advisor within the Extended Leadership Team, advocating for security informed decision making.</li><li>Build strong relationships with Enterprise Architecture, Enterprise Security Architecture, Engineering, Delivery, Operations and business leaders.</li><li>Provide architectural steer and security assurance into major transformation initiatives.</li><li>Ensure technical standards align to and address Information Security and Cyber requirements, controls and strategy.</li><li>Support the development and maintenance of security architecture patterns, standards and reference models.</li><li>Support the evaluation and selection of security technologies, ensuring they integrate effectively into the wider architecture landscape.</li><li>Oversee and enhance processes for risk-based architecture decision making.</li><li>Drive the assessment of control effectiveness and lead architectural strategies to address control gaps and emerging threats.</li><li>Partner closely with Information Security Governance, Cyber Operations, and Security Engineering teams.</li><li>Lead, mentor and inspire the security architecture team, cultivating technical excellence and a collaborative culture.</li></ul>
<b>Technologies:</b>
<ul><li>Cloud</li><li>IAM</li><li>Support</li><li>Security</li><li>TOGAF</li><li>Architect</li></ul>
<p><b>More:</b></p>
<p>We are the UKs largest water and wastewater company, with more than 16 million customers relying on us every day to provide essential services. Our mission is to build a better future for all, helping our customers, communities, our people, and the planet to thrive. We offer a competitive salary of up to £105,000 per annum, flexible working options, generous annual leave increasing from 26 to 30 days with service, a car allowance, performance-related pay, a robust pension scheme, private medical health care, and various benefits supporting health and wellbeing. Based at our hybrid location of Clear Water Court Reading, we are committed to fostering a diverse and inclusive workplace where all individuals are supported throughout the recruitment process.</p>
<p>last updated 8 week of 2026</p>
<b>Requirements:</b>
<ul><li>Proven leadership in security architecture within a complex enterprise environment</li><li>Experience in critical infrastructure, utilities or the public sector</li><li>Deep, holistic knowledge of cyber / information security</li><li>Strong understanding of secure design, threat modelling, cloud and on-prem architectures, identity platforms</li><li>Demonstrated ability to influence senior stakeholders and lead teams</li><li>Strong familiarity with frameworks such as NIST, ISO 27001, SABSA, TOGAF</li><li>Broad experience across cyber security domains (e.g. IAM/IDAM)</li><li>Relevant degree and certifications (CISSP, CISM, CCSP, SABSA, TOGAF)</li></ul>
<b>Responsibilities:</b>
<ul><li>Own, define and continuously evolve the Security Architecture Strategy and its supporting frameworks.</li><li>Embed secure-by-design principles across Digital, ensuring security requirements are incorporated through delivery and into operations.</li><li>Lead the development, governance and optimisation of security controls across all programs, ensuring they are effective, measurable and aligned to industry frameworks and regulatory expectations.</li><li>Oversee the integration of threat modelling, risk assessment and secure design principles into Digital programmes, projects and service lifecycles.</li><li>Act as a senior strategic advisor within the Extended Leadership Team, advocating for security informed decision making.</li><li>Build strong relationships with Enterprise Architecture, Enterprise Security Architecture, Engineering, Delivery, Operations and business leaders.</li><li>Provide architectural steer and security assurance into major transformation initiatives.</li><li>Ensure technical standards align to and address Information Security and Cyber requirements, controls and strategy.</li><li>Support the development and maintenance of security architecture patterns, standards and reference models.</li><li>Support the evaluation and selection of security technologies, ensuring they integrate effectively into the wider architecture landscape.</li><li>Oversee and enhance processes for risk-based architecture decision making.</li><li>Drive the assessment of control effectiveness and lead architectural strategies to address control gaps and emerging threats.</li><li>Partner closely with Information Security Governance, Cyber Operations, and Security Engineering teams.</li><li>Lead, mentor and inspire the security architecture team, cultivating technical excellence and a collaborative culture.</li></ul>
<b>Technologies:</b>
<ul><li>Cloud</li><li>IAM</li><li>Support</li><li>Security</li><li>TOGAF</li><li>Architect</li></ul>
<p><b>More:</b></p>
<p>We are the UKs largest water and wastewater company, with more than 16 million customers relying on us every day to provide essential services. Our mission is to build a better future for all, helping our customers, communities, our people, and the planet to thrive. We offer a competitive salary of up to £105,000 per annum, flexible working options, generous annual leave increasing from 26 to 30 days with service, a car allowance, performance-related pay, a robust pension scheme, private medical health care, and various benefits supporting health and wellbeing. Based at our hybrid location of Clear Water Court Reading, we are committed to fostering a diverse and inclusive workplace where all individuals are supported throughout the recruitment process.</p>
<p>last updated 8 week of 2026</p>