Application Architect Onsite in Bracknell Eligible for DV clearance £65-70K per annum benefits package We are recruiting an Application Architect to support the ongoing evolution of a Gateway solution for a strategic UK defence customer. Working alongside senior solution leaders, you'll contribute to secure design, controlled change, and operational resilience within a mission-critical environment. This is a development opportunity for an aspiring architect looking to build design authority and architectural experience in a high-assurance setting. The Role You will: 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 across Windows and Linux environments Your technical experience; Core Infrastructure VMware / vSphere RHEL & Windows Server Microsoft Services Active Directory, including Group Policy (GPO), DNS integration Linux & Platform Engineering Experience working within Red Hat Enterprise Linux environments Ability to write scripts to automate operational or security processes Familiarity with pattern matching techniques and regular expressions (Regex), particularly within security or antivirus tooling Configuration and management of the standard RHEL firewall Exposure to Linux-based security tooling and antivirus technologies Networking & Gateway Technologies Citrix NetScaler Wireshark Understanding of Gateway appliances and associated software Knowledge of secure communications protocols, including messaging platforms such as XMPP Storage & Data NetApp SAN NAS Backup solutions Security & Web PKI management applications Web applications and protocols Experience supporting file validation, inspection, and content verification within secure transfer environments If you are interested in discussing this Application Architect role further, please reply back with a copy of your updated CV.