Senior Mechanical Engineer

Senior Mechanical Engineer x 2 Inside IR35 12 months £53.90 per hour As a Senior Mechanical Engineer, you will play a pivotal role in the design and development of submarine systems. This includes system-level design, technical responsibility, supplier engagement, and the opportunity to steer design architecture across a major submarine programme. Lead design activities of Hydraulic / Mechanical systems, sub-systems and equipment for the next generation Royal Navy submarines.

Undertake functional design activities, modelling and analysis. Produce design documentation, Verification & 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:
Strong experience in the design of hydraulic/mechanical systems - ideally in complex, safety-critical environments (e.g. maritime, aerospace, defence, nuclear, oil & gas and sub-sea). Familiarity with systems and equipment involving; hydraulic power units (HPUs), variable frequency dives (VFDs), control cabinets, pumps, electric motors, hydraulic actuators, hydro-static transmissions and fluid mechanics. 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:
Familiarity with design standards such as ASME, BS EN and other applicable standards . Previous engagement with suppliers or stakeholders on hydraulic / mechanical systems (inclusion of hydraulic control logic is desirable, e.g. Variable Frequency Drive solutions but not required) The Platform Mechanical team:
Join a dynamic, multidisciplinary engineering team where your expertise will help drive the delivery of critical mechanical capability at the heart of a high-profile programme. Through close collaboration with suppliers, systems engineers, and key stakeholders, you'll play a pivotal role in shaping high-integrity technical solutions, supporting team growth, and ensuring projects stay on course-both technically and financially. This is a role that grows with you: whether your passion lies in technical leadership-owning innovative design solutions and guiding others;

people leadership-developing talented engineers and managing focused teams; or specialist technical delivery-diving deep into hydraulic and mechanical performance, analysis, and integration. Here, you'll have the flexibility to shape your impact and help define the future of mechanical engineering excellence. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria