Mechanical Lead Design Engineer

Job Title: Lead Mechanical Design Engineer We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. As a Lead 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. We’re looking for someone who can confidently lead engineering work packages while mentoring others and contributing to a collaborative delivery culture. 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 Coaching and supporting engineers at all levels — from graduates to senior professionals — to grow technical capability and confidence Reviewing technical documentation, supporting hazard assessments, and managing change control with sound engineering judgement A proven track record of delivering complex mechanical or multi-disciplinary engineering tasks in a regulated environment Experience mentoring or coaching engineers to support technical and professional growth Excellent communication and influencing skills, with the confidence to lead conversations, challenge constructively, and build strong working relationships The ability to collaborate effectively across engineering, project, safety, ILS and supply chain functions Familiarity with task and documentation management tools such as Jira and Confluence A STEM-related degree (or equivalent experience) with strong foundations in systems thinking and platform-level integration The Platform Mechanical team: You’ll join the Platform Mechanical Integrated Delivery Team — a dynamic, collaborative engineering group working at the forefront of submarine platform development. The team brings together engineers from across disciplines, career levels, and partner organisations to deliver critical mechanical capability. Through close engagement with suppliers, systems engineers, and programme stakeholders, you’ll play a central role in shaping high-integrity technical solutions, supporting team development, and ensuring delivery remains aligned with the wider programme plan and budget. Air Purification & Atmosphere Monitoring, Trim & Compensation, Hydraulics, Air Movement & HVAC, and Cooling. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. You’ll be recognised for your contribution and enjoy rewards tailored to what’s most important to you and your family, support for your financial and personal wellbeing, as well as a balanced lifestyle. We’re committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do. LI-Hybrid