Principal Engineer

Job Description

Principal Engineer – Mechanical / Aerospace Systems

An advanced engineering organisation operating in a highly regulated sector is seeking a Principal Engineer to lead technical development projects within its engineering function. This role blends hands‑on engineering expertise with project leadership, playing a key part in delivering complex, safety‑critical products.

You’ll work closely with internal teams and external partners, driving technical direction while ensuring projects meet performance, quality, and certification requirements.

This is a senior, delivery‑focused role requiring strong technical judgement, stakeholder coordination, and the ability to balance engineering rigour with programme timelines.

• Lead and manage technical development projects aligned to product and R&D strategy
• Provide strategic technical direction and support the growth of internal engineering capability
• Coordinate cross-functional teams and external partners to deliver project milestones
• Own project status reporting across schedule, quality, deliverables, and cost
• Support proposal development and contribute to customer and supplier engagements
• Participate in and lead design reviews, technical meetings, and certification activities
• Prepare, review, and approve engineering documentation, including design and certification submissions
• Approve engineering drawings and modifications using CAD and data management systems
• Contribute to the development of engineering tools, processes, and continuous improvement initiatives
• Ensure compliance with safety standards, engineering governance, and company procedures

• Degree in Mechanical Engineering or a related discipline (Master’s level desirable)
• Strong experience designing electromechanical systems, mechanisms, or actuation systems
• Proven background in highly regulated industries (e.g. aerospace, defence, or similar)
• Deep understanding of engineering fundamentals including materials, mechanisms, and reliability
• Experience with 3D CAD tools (Creo) and engineering drawing standards (e.g. BS8888, GD&T)
• Knowledge of manufacturing processes for precision‑engineered products
• Experience with product testing, qualification, and certification processes
• Familiarity with relevant industry standards (e.g. environmental and qualification standards)
• Strong communication skills with the ability to work across multidisciplinary teams
• Able to manage workload independently while delivering to tight deadlines

• Competitive salary (dependent on experience)
• Benefits package including pension and healthcare
• Opportunity to work on complex, high-value engineering programmes
• Collaborative environment with scope for technical leadership and progression