Technical Architect – 12 Months – Up to £700pd (Inside IR35) – Onsite in Bedford
Overview
A major Defence organisation is embarking on an ambitious digital transformation programme across a highly complex blend of IT and OT systems - including National Critical Infrastructure. We are seeking an experienced Technical Architect to lead the technical vision, modernisation roadmap and multi-classification architecture strategy.
The Role
You’ll turn discovery and BA outputs into a clear technical direction, defining what the next several years of transformation look like. This environment spans legacy 1990s-era systems, SCADA/OT integrations and multi-classification networks (Unclassified → Secret). Your work will directly support national-level capability.
Key Responsibilities:
* Develop the end-to-end technical architecture and transformation roadmap
* Shape modernisation strategy across legacy IT, OT and classified environments
* Interpret BA findings into actionable technical designs
* Work across multi-classification domains without needing separate systems
* Engage senior stakeholders across engineering, IT, security and operations
* Ensure all designs meet Defence standards and secure-by-design principles
Essential Experience:
* Extensive background in Defence or National Security environments
* Multi-classification architecture (crypto, data diodes, cross-domain solutions)
* Legacy IT + modernisation, including 1990s technologies
* IT/OT environments & SCADA-type systems
* Knowledge of Secure by Design, JSP604 / JSP453
* Strong stakeholder & architectural leadership
Contract Details:
* Inside IR35 – up to £700 per day
* 12 months initially
* Onsite in Bedford (3–4 days per week)
* Must be eligible for UK Security Clearance