Location: Bristol (hybrid) Clearance: Hold active or be eligible for UK Security Clearance (SC) We are looking for a Senior Solution Architect with a strong technical pedigree to join a global leader in providing technology solutions that drive innovation and solve complex challenges across various industries, with a particular focus on defence. You will be working with internal and external delivery teams, engineering leads, and customer stakeholders to ensure end-to-end solution coherence and delivery feasibility. This is an opportunity to shape and influence the direction of a large-scale, high-profile programme. You will be central to decisions around platform strategy, cloud adoption, data integration, and multi-supplier delivery models, ensuring alignment across the full SDLC - from initial HLDs to support transition and ongoing optimisation. In this role, you will be leading the full-spectrum architecture across: Business architecture (process modelling, capability mapping) Data architecture (data flows, integration schemas, MI/analytics) Application architecture (COTS/bespoke solutions, ERP, WMS, TMS) Integration (SOA, ESB, REST, XML, MQ) Infrastructure & Cloud (AWS, hybrid models, containerization, networking) Security architecture (compliance, assurance, identity models) Key Skills & Experience: Strong architecture delivery experience across complex multi-domain solutions in the defence sector Hands-on with AWS (IaaS/PaaS), cloud-native design, scalability patterns Solid integration knowledge: REST, SOAP, ESBs, APIs, message queues (MQ) Working knowledge of ERP, Inventory, WMS, or TMS platforms Experience with both bespoke software and COTS system integration Familiarity with modelling frameworks (TOGAF/MODAF/ArchiMate preferred) Excellent communicator - able to engage and challenge stakeholders across business, engineering, and supplier teams