Enterprise Architect

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