Senior Engineer Sustaining Location: Sunbury on Thames, TW16 Job Type: Permanent We are seeking an experienced Senior Engineer Sustaining to join a multi-disciplinary team supporting aerospace, rail, oil and gas, and land-based systems. This is a hands-on role ensuring continuity of supply, resolving in-service product issues, and driving improvements in yield, reliability, and performance. Key Responsibilities: Investigate and resolve production and in-service product issues. Define corrective actions, alternatives, or redesigns to address yield, delivery, or performance challenges. Support production assembly and test teams with data capture and troubleshooting. Visit customers and suppliers when required to resolve in-service or product-related issues. Produce and review engineering documents, drawings, and reports to a high standard. Collaborate across mechanical and electronic engineering teams to deliver sustaining solutions. Contribute to proposals and costings for updates to legacy products. About You: Strong background in mechanical design engineering with knowledge of basic electrical controllers, relays, and discrete electronics. Proven ability to analyse problems and propose effective technical solutions. Experience supporting in-service investigations and supplier collaboration. Skilled in creating and reviewing technical documentation. Comfortable working in multi-disciplinary teams with a solutions-focused mindset. If you re a Senior Engineer Sustainin