Our client, a leading organisation in the Defence & Security sector, is currently seeking a Principal Engineer (Mechanical SME) to join their team. This is a permanent position focusing on technical excellence, problem-solving, and technical review, ensuring mechanical engineering standards, designs, and decisions support business performance, safety, and innovation.

• Act as the recognised Subject Matter Expert (SME) for all mechanical engineering matters
• Provide high-level technical guidance across multiple projects and programmes
• Lead complex problem-solving and root cause analysis for critical engineering issues
• Review and approve mechanical designs, calculations, and technical documentation
• Assist in defining, maintaining, and improving mechanical engineering standards, processes, and best practices
• Support design reviews, risk assessments, and engineering assurance activities
• Provide expert input during bids, proposals, and project planning
• Mentor and coach engineers to build mechanical engineering capability across the business

• Extensive experience in mechanical engineering within a relevant industry (e.g. defence, engineering, manufacturing)
• Proven track record of solving complex engineering challenges
• Deep technical expertise in mechanical design, analysis, and materials
• Strong understanding of engineering standards, compliance, and safety requirements
• Excellent problem-solving and analytical skills
• Strong communication skills, able to translate complex technical concepts clearly
• Degree in Mechanical Engineering or related discipline (or equivalent experience)
• Chartered Engineer status (or working towards) desirable

• Opportunity to work on a variety of interesting and challenging projects
• Professional development and training opportunities
• Supportive and collaborative work environment
• Influential role with high technical authority

If you are a highly experienced Principal Engineer with deep expertise in mechanical design and engineering, we would love to hear from you. Apply now to join our client''s dynamic and talented team.