Senior Civil Engineer - Water & Wastewater (UK, Flexible)

Mwh Treatment; Greater Manchester; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

MWH Treatment is seeking a Senior Civil Engineer to lead civil design activities on major water and wastewater infrastructure projects across the UK. You will develop robust, buildable solutions that meet client requirements and regulatory standards while supporting long‑term asset performance.

You will coordinate with multidisciplinary teams, manage design outputs, and mentor junior staff to strengthen the engineering capability across the team. Flexible working within the UK is available.

Responsibilities

• Lead civil design tasks and packages to agreed technical standards, budgets and programmes.
• Develop civil engineering designs, calculations, layouts, specifications and technical documentation for water and wastewater infrastructure projects.
• Produce cost‑effective civil solutions that consider constructability, safety, operational requirements and whole‑life costs.
• Review and assure civil design outputs within your area of authority, ensuring quality and compliance with company and industry standards.
• Coordinate civil design activities with Process, Mechanical, EICA, 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 of civil infrastructure including reinforced concrete structures, buried structures, drainage systems, pipelines, earthworks, highways and site development works.
• 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.

Job description

MWH Treatment is seeking a Senior Civil Engineer to lead civil design activities on major water and wastewater infrastructure projects across the UK. You will develop robust, buildable solutions that meet client requirements and regulatory standards while supporting long‑term asset performance.

You will coordinate with multidisciplinary teams, manage design outputs, and mentor junior staff to strengthen the engineering capability across the team. Flexible working within the UK is available.