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
- 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
- TLS server/client certificates
- Digital file format handling
- Shell scripting
- REGEX
- 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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