Our client, a leading technology company in the Defence & Security sector, is currently seeking a talented Research & Development Software Engineer to join their innovative team on a permanent basis. This role is based at Portsdown Technology Park in Portsmouth and offers the exciting opportunity to work on cutting-edge immersive training solutions and simulations. Key Responsibilities: Build and maintain prototypes, proof-of-concept systems, and technical demonstrators Take early-stage feasibility prototypes forward into working implementations, validating technical assumptions and documenting findings Implement integrations between AI services, APIs, backend systems, XR applications, simulation environments, and third-party platforms Develop microservices, wrappers, connectors, and service interfaces to support solution components Support applied AI development including LLM services, speech services, classification models, RAG pipelines, and AI-enabled application features Prepare a...