Security Architect

Powered by Water, Driven by Purpose

South West Water keeps the South West flowing with safe, reliable drinking water and wastewater services across some of the UK’s most stunning landscapes.

We’re proud to be part of Pennon Group, a leader in the UK water sector, working towards a greener future. Our goals? As well as lowering our carbon footprint, we’re working with partners to plant 300,000 trees, restore peatlands and supporting farmers and landowners to improve water quality and wildlife.

Whether you’re starting out or seeking a new challenge, our scale and ambition create opportunities for you to shape your own career.

Ready to make a splash?
Join our team today.

Location: Exeter with Hybrid Working

Salary: £55,000 - £65,000 per annum + annual bonus + excellent benefits

Contract: Full Time, Permanent

Shape the future of cyber security at South West Water

We're looking for an experienced Security Architect to lead the design and assurance of secure architectures across business and technology change. This is a highly influential role where you'll act as the senior security design authority, helping to shape strategic technology decisions and ensuring security is embedded from the earliest stages of delivery.

Working across both enterprise IT and Operational Technology (OT) environments, you'll provide expert guidance, lead threat modelling activities and define security standards that protect critical services relied upon by millions of customers.

What you'll be doing

• Lead the definition, development and assurance of secure architectures across business and technology change.
• Own security architecture principles, standards, reference models and reusable design patterns.
• Review and approve solution architectures, high-level designs and significant design decisions.
• Facilitate threat modelling workshops using methodologies including STRIDE, attack trees and kill-chain analysis.
• Ensure threats, risks, abuse cases and security requirements are identified, documented and addressed throughout delivery.
• Provide architectural oversight from concept and design through to implementation and assurance.
• Develop and maintain the security architecture roadmap and target-state security capabilities.
• Support strategic technology decisions, procurement activities and product selection.
• Maintain architecture artefacts and contribute to audit, governance, risk and regulatory assurance processes.
• Extend appropriate security controls into Operational Technology environments, including network segmentation, secure remote access, monitoring and operational resilience.
• Collaborate with architecture, engineering, delivery and operational teams to achieve consistent security outcomes across the organisation.

What we're looking for

You’ll bring significant experience within cyber security architecture and be confident influencing stakeholders, balancing risk and enabling business outcomes.

• Proven experience as a Security Architect or in a senior security design role.
• Experience defining security architecture frameworks, standards, reference models and design patterns.
• Strong threat modelling experience within project and architecture environments.
• Experience reviewing and assuring enterprise and solution architectures.
• Strong understanding of governance, risk management and control assurance processes.
• Ability to translate business requirements and technical risks into secure architectural solutions.
• Experience producing architecture artefacts, threat models, standards and technical guidance.
• Excellent stakeholder management and workshop facilitation skills.
• Broad technical knowledge across:
  • Identity & Access Management (IAM)
  • Network security and segmentation
  • Endpoint…