Salary: £65,000 - 70,000 per year Requirements: Proven experience as an Application Security Architect Strong design and development background Expertise with Gateway technologies Knowledge of infrastructure and platforms, including VMware/vSphere, RHEL, and Windows Server Familiarity with Trellix, SIEM platforms, and identity and directory services such as Active Directory, DNS, and LDAP Understanding of Gateway and security technologies, including email, chat, and file standards, web and chat protocols Proficient in XML and JSON schema, TLS server/client certificates, and digital file format handling Strong skills in Linux and networking, including shell scripting and REGEX Knowledge of firewall technologies Self-motivated with the ability to work autonomously Strong stakeholder engagement skills Ability to translate customer requirements into secure designs Confident communicator at technical and leadership levels Willingness to travel weekly within the South/Southwest region at short notice Responsibilities: Own and design technical changes needed to maintain and enhance Gateway capability Produce high-quality design documentation in collaboration with the customer and Programme Manager Support solution governance and ensure 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 Technologies: Active Directory Architect Firewall Support JSON LDAP Linux RHEL Security VMware Web Windows XML More: We are seeking an experienced Application Security 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. We offer a competitive salary of £65-70k per annum, complemented by a benefits package. You will be working onsite in Bracknell and will need to be eligible for DV clearance. last updated 8 week of 2026