Mechanical Design Engineer Contract | Guildford | On-Site | 12 Months | Inside IR35 Our client, a leader in the aerospace sector, is seeking a highly motivated Mechanical Design Engineer to contribute to the development of current and future spacecraft missions. This is a fantastic opportunity to be involved in the full engineering lifecycle — from initial concept through to final integration — within an innovative and collaborative environment. You’ll play a key role in the design and integration of spacecraft structures and sub-systems, working closely with cross-functional teams including project managers, systems engineers, manufacturing, and senior analysts. Key Responsibilities: • Design mechanical components and systems using 3D CAD (SolidWorks), ensuring compliance with customer and mission requirements. • Produce detailed manufacturing drawings and support procurement, inspections, and manufacturing activities. • Document and manage design changes through Engineering Change Notices (ECNs). • Write technical assembly procedures and integration documentation. • Support cleanroom-based integration of mechanical components and sub-assemblies. • Maintain detailed build logs and create Bills of Materials (BoMs) using MRP systems. • Collaborate with electrical engineers on the design of enclosures and PCB outlines, ensuring compatibility with electronic assemblies. • Contribute to the mechanical design of systems such as propulsion, mechanisms, and optical instruments when required. What We’re Looking For: Essential: • Strong experience in mechanical design, ideally within the aerospace, space, defence, or motorsport industries. • Proficient in SolidWorks and competent with Microsoft Office tools. • Knowledge of materials, surface treatments, and finishes for aerospace applications. • Experience in hands-on build, integration, and testing of mechanical systems. • Ability to write clear and accurate technical documentation. • Strong attention to detail and the ability to work under pressure and to tight deadlines. • Experience with drawing checking and release processes. • Understanding of production and manufacturing methods. Desirable: • Familiarity with MRP systems. • Experience in electrical harness integration. • Understanding of spacecraft systems and the constraints of space environments.