Software Test Engineer - Systems Integration and Validation Hybrid working - 3-4 days on-site 42,000 - 50,000 The OpportunityWe have an exciting opportunity to join the Integration and Systems Validation Team within our Weapon Systems Simulation and Experimentation (WSSE) department.This team sits at the heart of our digital simulation and experimentation capability, ensuring complex systems are rigorously tested, validated, and ready for delivery. You''ll work on cutting-edge simulation environments that integrate real products, models, synthetic environments, and people across the full systems lifecycle.This is a dynamic, fast-paced role offering exposure to both rapid mini-projects and longer-term critical programmes, from early concept demonstration through to system delivery and customer training. What You''ll Be DoingReporting to the ISV Team Lead, you''ll be responsible for the end-to-end software testing and proving lifecycle for one or more products within a simulation or emulation environment. Test and Proving PlanningUnderstand customer needs and requirements from a testing and proving perspectiveReview system design and architecture to define test bed requirementsDevelop comprehensive software test plans, designs, and specificationsTest and Proving ExecutionConduct progressive assurance testing throughout the development lifecycleLead technical investigations into software defects and emergent behavioursSupport software integration activities, trials, and demonst