Solution Architect

Location: High Wycombe, Buckinghamshire

 Position Role Type: Onsite At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.  Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. The Solution Architect About us: The Future Joint Command and Staff Trainer (FJCAST) programme will transform the delivery of senior staff training, enabling Joint Headquarters, operational commands, coalition partners and allied nations to train together across Land, Maritime, Air, Space and Cyberspace domains. Through the integration of simulation, synthetic environments, exercise design, data exploitation, operational networks and coalition interoperability, FJCAST will support the training, preparation, experimentation and evaluation of UK and allied operational headquarters.

The Solution Architect will support the Chief Engineer in the development and delivery of a secure, interoperable, and data-driven Joint Collective Training capability. The role is responsible for analysing customer requirements and designing the end-to-end technical solutions that underpin collective training across UK Defence, NATO, coalition partners, and multi-domain operational environments. The Solution Architect will lead the development of architectures spanning modelling and simulation, synthetic environments, exercise support systems, operational CIS, data exploitation platforms, networking, distributed edge computing, and training management systems. Working across a diverse ecosystem of Defence customers, technology providers, simulation partners, and engineering teams, the Solution Architect will ensure that individual systems are integrated into a coherent training ecosystem capable of delivering realistic, scalable, and operationally relevant Tier 3 and Tier 4 collective training exercises. The role combines solution architecture, systems integration, simulation architecture, networking, distributed computing, Secure by Design principles, and requirements engineering to deliver measurable training outcomes and operational readiness.

Architecture & Solution Design Design secure, scalable, resilient, and cost-effective solution architectures aligned with FJCAST programme objectives and enterprise architecture principles. Support the Chief Engineer in developing and maintaining the programme technical architecture, future-state vision, and architectural roadmap. Develop High-Level Designs (HLDs), Low-Level Designs (LLDs), technical architectures, integration patterns, and implementation roadmaps. Ensure solution designs align with operational, security, interoperability, performance, resilience, and availability requirements. Produce and maintain architecture artefacts, technical specifications, interface definitions, and design documentation.

Analysis & Solution Definition Work closely with military stakeholders, training audiences, operational users, and partner organisations to understand training objectives and operational outcomes. Translate user needs and business requirements into coherent technical architectures and solution designs. Develop and maintain requirements-to-solution traceability ensuring architecture decisions remain linked