Security Architect

We are seeking an experienced Security Application Architect to support the delivery and ongoing evolution of a secure Gateway capability for a strategic UK defence customer. This role combines architectural ownership, secure design governance, and operational assurance within a high-security, mission-critical environment. You'll shape technical direction, drive change, and ensure resilient, compliant solution delivery across engineering and support teams. What you'll be doing;

• Own and design technical changes required to maintain and enhance Gateway capability
• Produce high-quality design documentation in collaboration with the customer and Programme Manager
• Support solution governance and architectural integrity
• Ensure ongoing availability, resilience and security compliance
• Provide architectural guidance during troubleshooting and incident resolution
• Act as a key technical interface between engineering delivery and operational support teams Your technical background

You will ideally be an experienced grade architect with a strong design and development background and proven experience with Gateway technologies. Your technical knowledge should include: Infrastructure & Platforms

• VMware / vSphere

• RHEL and Windows Server

• Trellix

• SIEM platforms Identity & Directory Services

• Active Directory

• DNS

• LDAP

• LDIF Gateway & Security Technologies

• Gateway appliances and associated software

• Email, Chat and File standards

• Web and Chat protocols

• XML & JSON schema

• TLS server/client certificates

• Digital file format handling Linux & Networking

• Shell scripting

• REGEX

• Firewall technologies What we're looking for;

• Self-motivated and comfortable working autonomously

• Strong stakeholder engagement skills

• Able to translate customer requirements into robust, secure designs

• Confident communicator at technical and leadership levels

• Willing to travel weekly within the South / Southwest region at short notice

£65-70k per annum + benefits package