Overview

Principal Design Engineer (Mechanical) – Location: Birmingham | Hybrid working available

We are seeking a Principal Design Engineer (Mechanical) to play a key role in delivering innovative water and wastewater solutions across the UK and Ireland. This is a client-facing position offering the chance to guide projects from concept to completion and support the development of the next generation of engineers.

Responsibilities

• Lead and mentor a team of junior engineers across multiple offices.
• Drive the mechanical design of water projects, including:
  • wastewater treatment
  • clean water treatment
  • industrial wastewater solutions
  • biosolids treatment
• Oversee design and project management from initial concept through to delivery.
• Produce calculations, drawings, specifications, and detailed design reports.
• Contribute to HAZID/HAZOP and LOPA studies.
• Lead energy efficiency initiatives and balance-of-plant design.

About You

• Degree (BEng/MEng) in Mechanical Engineering or a closely related discipline.
• 7+ years of relevant post-graduate design experience.
• Chartered Engineer (CEng) status with a relevant professional institution.
• Proven background in the water industry.
• Strong IT skills, particularly Microsoft Office.
• Excellent communication and interpersonal skills.
• Full clean driving licence and own transport.

What’s on Offer

• Competitive salary with annual reviews.
• Performance-based bonus scheme.
• Career progression supported by clear development pathways.
• Hybrid & flexible working options.
• Employer pension contributions.
• Paid maternity & paternity leave.
• Life assurance & employee assistance programme.
• Professional development support, including pathways to chartership.
• Wellness and sustainability initiatives, including Women in Engineering and biodiversity projects.
• Team social events and a collaborative culture.