Salary: £70,000 - 70,000 per year Requirements: Design and development background in secure or Gateway-based environments Experience with core infrastructure technologies including VMware/vSphere, RHEL, and Windows Server Familiarity with Trellix SIEM, Microsoft Services, Active Directory, DNS, RDS, and networking Knowledge of Citrix NetScaler, Wireshark, and storage solutions such as NetApp SAN and NAS Understanding of backup solutions and security/web gateway appliances Ability to manage PKI applications and web protocols Self-motivated and able to work under the guidance of senior architects Strong documentation and interpersonal skills Willingness to travel weekly within the South/Southwest region Responsibilities: Contribute to infrastructure and Gateway design changes to maintain availability and performance Produce structured design documentation alongside the customer and Programme Manager Support architectural governance and ensure alignment to solution intent Provide technical oversight during incident troubleshooting with SOC and 3rd Line teams Assist in maintaining secure, resilient, and scalable infrastructure components Technologies: Active Directory Architect Citrix Support RHEL Security VMware Web Windows More: We are recruiting an Application Architect to support the ongoing evolution of a Gateway solution for a strategic UK defence customer in Bracknell. This role offers a competitive salary of £65-70K per annum along with an attractive benefits package. Working alongside senior solution leaders, you will have the opportunity to build design authority and gain architectural experience in a high-assurance environment. last updated 9 week of 2026