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Principal Engineer - Mechanical Design

United Kingdom, Derby · Job Posted January 16, 2026
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Job Description

We are looking to strengthen our engineering team with a Principal Mechanical Engineer based at the Derby MWHT office with hybrid working available. You will report directly to the Regional Mechanical Discipline Lead Engineer and your role will be to provide superior quality Engineering Design services to allow the company to minimise risks and maximise profits on turnkey and engineering services contracts. In order to ensure the above the individual must co-ordinate the design and produce design documents and drawings taking due account of health and safety requirements, specifications and standards pertaining to the contract.

Job Responsibility

  • Produce design layouts which are cost effective, meet the requirements of the specification and which can be constructed and commissioned effectively
  • Ensure that standard practices are utilised where ever possible
  • Maintain competitiveness
  • Line management
  • Provide estimates and feedback for Proposals department
  • Work to procedures and processes to ensure the continuing development of the department
  • Assist in developing procedures and processes
  • Monitor and review the procedures and processes
  • Write, update and monitor efficient procedures to aid the smooth running of the department
  • Ensure co-ordination of designs with all other disciplines internal and external to MWHT
  • Maintain files and records throughout the duration of contracts
  • Assure customer satisfaction
  • Maintain a personal development plan
  • Assist in supervising and developing staff
  • Assist in ensuring a safe working environment for all staff
  • Reduce waste to a minimum from all departmental activities
  • Ensure designs take account of environmental issues
  • Ensure that design takes full regard of all health and safety requirements

Requirements

  • Proven line management experience, including performance management, coaching, and staff development
  • Strong understanding of the principles of water and sewage treatment
  • Have experience of mentoring and supporting members of staff in designing relevant discipline aspects of water and sewage treatment plants
  • Membership of a professional institution / chartered
  • Relevant discipline Engineering degree
  • Ability to rationalise designs and produce economic plant layouts
  • Good general knowledge of all aspects of water treatment, e.g. mechanical engineering, process engineering, electrical engineering and project management
  • A flexible mind, with the ability to assimilate large amounts of different data at one time
  • Ability to present technical proposals clearly, confidently and convincingly
  • Computer literacy
  • Driving license

What we offer

  • A competitive salary
  • Hybrid Working
  • Car/car allowance
  • 25 days holiday + Bank Holidays (with an additional 5 days available to buy)
  • Contribution Pension scheme
  • Life Assurance
  • Health Insurance
  • Private Medical Insurance
  • Cycle to work scheme
  • Discounts and savings Hub
  • Kids Pass

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