Principal Civil Design Engineer - Water & Wastewater (UK)

MWH Treatment Limited; United Kingdom; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

MWH Treatment Limited is seeking a Principal Civil Design Engineer to lead and deliver complex civil designs for major UK water and wastewater projects. The role offers technical leadership, design governance, and the opportunity to shape project strategy while mentoring engineers across the business.

You will oversee concept through delivery, ensuring designs are safe, compliant and commercially sound, with strong stakeholder engagement and bid support.

Qualifications

• Degree in Civil Engineering (BEng, MEng or equivalent).
• Significant experience in the UK water and wastewater industry.
• Strong understanding of water and sewage treatment principles.
• Experience leading multidisciplinary engineering design projects.
• Ability to develop practical, efficient and economic engineering solutions.
• Chartered Engineer status desirable or working towards Chartered status.

Responsibilities

• Lead and coordinate the delivery of complex civil engineering designs within the water and wastewater sector.
• Provide technical leadership and guidance across multidisciplinary project teams.
• Develop innovative, practical and risk-balanced engineering solutions.
• Ensure all designs are safe, sustainable, compliant, buildable and cost-effective.
• Produce, review and approve design documentation, calculations, specifications and drawings.
• Support major project bids and contribute to successful project outcomes.
• Act as a technical reviewer and maintain robust engineering governance and quality standards.
• Manage technical delivery from broad project briefs, balancing programme, cost, quality and resource requirements.
• Identify and address technical risks early, ensuring timely resolution.
• Build and maintain strong relationships with clients, stakeholders, contractors and supply chain partners.
• Mentor, coach and develop engineers, helping to strengthen technical capability across the business.
• Promote a culture of continuous improvement, customer focus and engineering excellence.

Education

Degree qualified in Civil Engineering (BEng, MEng or equivalent)

Job description

MWH Treatment Limited is seeking a Principal Civil Design Engineer to lead and deliver complex civil designs for major UK water and wastewater projects. The role offers technical leadership, design governance, and the opportunity to shape project strategy while mentoring engineers across the business.

You will oversee concept through delivery, ensuring designs are safe, compliant and commercially sound, with strong stakeholder engagement and bid support.