Senior or Principal Engineer - Mechanical Engineering - Attractive Northern England - Permanent and Long Term - Military and Defence A Senior/Principal Mechanical Engineer is required for an international Defence and Weapons Systems Company that is expanding their team. Salary and Seniority will depend on your skills and experience. This position will require full-time on-site presence  The Senior/Principal Mechanical Engineer will be part of the Mechanical Engineering team and will be involved in supporting technical changes to existing company products (i.e Defence and Weapons Systems). The Senior/Principal Mechanical Engineer will be involved in the Mechanical Design, Tests and Trials and will have the opportunity to shape the next generation of defence/weapons platforms and future technologies. Key Duties and Responsibilities for the Senior/Principal Mechanical Engineer Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution. Specifying and assisting in the build of prototypes, products and systems suitable for testing. Providing timely corrective actions on all assigned defects and issues. Ensuring that commitments are agreed, reviewed and met. Mentoring junior engineers regarding technical matters. Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets. Author/co-author technical reports, papers, articles, patents and presentations as required. Key Skills, Experience and Qualifications Required for the Senior/Principal Mechanical Engineer Educated to Degree level in Engineering, Mechanical or Science Subjects. Be able to design documentation with the ability to present these to customers and wider groups. Have the ability to solve complex engineering calculations. Have an Engineering Lifecycle background. Be proficient in CAD, MS Office and be comfortable with other IT applications. Benefits: Competitive Pension Scheme Enhanced Annual Leave Allowance Share Incentives Plans Professional Development Career Diversification Employee Assistance Programme Cycle2work and Employee Discounts Academic and Mentoring Support Annual Incentives Maybe Also Available  **Security Clearance (SC) may be required due to the nature of the Defence products involved** Demand for this role will undoubtedly be high and interviews will be arranged very soon. If you have the right experience and you want to be considered, please apply today. If you have any questions about the Senior/Principal Mechanical Engineer role, please contact Peter Heap at Jonathan Lee Recruitment on (phone number removed) or send suitable CV's to Your CV will be forwarded to Jonathan Lee Recruitment, a leading engineering and manufacturing recruitment consultancy established in 1978. The services advertised by Jonathan Lee Recruitment are those of an Employment Agency. In order for your CV to be processed effectively, please ensure your name, email address, phone number and location (post code OR town OR county, as a minimum) are included