Job Title: Lead Mechanical Design Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this role Salary: Circa £55,000 What you''ll be doing: As a Lead Principal Engineer within the SSNA Platform Mechanical Integrated Delivery Team (IDT), you will play a key leadership role in delivering engineering scope across a complex and fast-paced submarine programme. You''ll take ownership of multiple systems, provide technical assurance, and collaborate across disciplines to drive delivery forward. Leading the delivery of assigned engineering scope, ensuring quality and timely outputs across design, integration, and qualification Overseeing technical ownership of several mechanical systems, ensuring compliance with system requirements and effective collaboration across interface areas Producing engineering artifacts, including documentation, calculations and performing simulation/analysis Managing task allocation and progress tracking through structured tools (Jira/Confluence), ensuring alignment with programme milestones, cost, and schedule expectations Coaching and supporting engineers at all levels - from graduates to senior professionals - to grow technical capability and confidence Working closely with peers, suppliers, and wider functional stakeholders to resolve issues and maintain delivery momentum Reviewing technical documentation, supporting hazard assessments, and managi