Business Sector: IT
Job ref: LFI - 153991
Post Date: February 23, 2026
Application Security Architect
Onsite in Bracknell
Eligible for DV clearance
£65-70k per annum + benefits package
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
o VMware / vSphere
o RHEL and Windows Server
o Trellix
o SIEM platforms
* Identity & Directory Services
o Active Directory
o DNS
o LDAP
o LDIF
* Gateway & Security Technologies
o Gateway appliances and associated software
o Email, Chat and File standards
o Web and Chat protocols
o TLS server/client certificates
o Digital file format handling
o Shell scripting
o REGEX
o Firewall technologies
What we're looking for;
* Self-motivated and comfortable working autonomously
* 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
If you are interested in discussing this Application Security Architect role further, please reply back with a copy of your updated CV.
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