Senior Mechanical Engineer: Water & Wastewater Design Lead

MWH Treatment Limited; United Kingdom; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

MWH Treatment Limited in the UK is seeking a Senior Mechanical Engineer to lead mechanical design across major water and wastewater projects. You will develop buildable solutions, review outputs for safety and sustainability, and mentor junior engineers within a collaborative design-and-build environment.

Based at a suitable location in the UK with flexible working, you will manage equipment specifications, pump and pipework layouts, and ensure compliance with regulatory standards and whole-life

Qualifications

• Strong experience in mechanical design for water/wastewater utilities.
• Ability to develop practical, buildable mechanical solutions considering safety and whole-life cost.
• Experience leading and mentoring engineers within a mechanical discipline.
• Membership of a relevant professional institution, ideally Chartered.
• Relevant Mechanical Engineering degree or minimum HND.

Responsibilities

• Lead mechanical design tasks and packages to agreed technical standards, budgets and programmes.
• Develop mechanical designs, equipment specifications, plant layouts and technical documentation that support safe, efficient and reliable asset performance.
• Produce cost-effective mechanical solutions that consider construction, commissioning, operational and whole-life costs.
• Review and assure mechanical design outputs within your area of authority, ensuring quality and compliance with company and industry standards.
• Coordinate mechanical design activities with Process, EICA, Civil, Structural, Digital and Commissioning teams to support integrated project delivery.
• Identify and manage technical risks, design issues and opportunities for optimisation throughout the project lifecycle.
• Support the design and selection of mechanical equipment, including pumps, pipework, valves, treatment plant equipment and associated systems.
• Mentor junior engineers, graduates and apprentices, sharing knowledge and supporting technical development across the team.
• Build strong working relationships with clients, discipline leads, project teams, suppliers and site teams.

Skills

Mechanical design

Water/wastewater

Regulated environment

Calculations & specs

Multidisciplinary coordination

Mentoring engineers

Chartered engineer

Communication of proposals

Driving licence

Education

Mechanical Engineering degree or HND

Job description

MWH Treatment Limited in the UK is seeking a Senior Mechanical Engineer to lead mechanical design across major water and wastewater projects. You will develop buildable solutions, review outputs for safety and sustainability, and mentor junior engineers within a collaborative design-and-build environment.

Based at a suitable location in the UK with flexible working, you will manage equipment specifications, pump and pipework layouts, and ensure compliance with regulatory standards and whole-life