Job Title: Lead Mechanical Engineer - Air Purification Systems Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Competitive What you''ll be doing: Design of Air Purification and Atmosphere Monitoring systems, sub-systems and equipment for the next generation Royal Navy submarines Undertake functional design activities, modelling and analysis Produce design documentation, Verification and Validation evidence and safety justifications Support specification qualification and procurement of components, working collaboratively with suppliers Engaging with stakeholders across the cross-functional project team Driving engineering governance through peer reviews and design reviews Your skills and experiences: Essential: Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, trace contaminant management, radiological hazards) - ideally in complex, safety-critical environments (e.g. maritime, aerospace, defence, nuclear, oil and gas and sub-sea) Proven capability in system lifecycle delivery - from concept through to commissioning Demonstrated leadership - either through technical direction, mentoring, or project ownership Chartered engineer or working towards professional accreditation Desirable: Knowledge of platform-level constraints such as noise, shock, or surv