Principal Mechanical Engineer - Water Sector

Overview

As Principal Mechanical Engineer, you own the technical delivery of mechanical designs for water and wastewater projects, from feasibility through commissioning. You’ll lead cross‑disciplinary design teams, mentor engineers and build strong client relationships to drive project success. The role supports Stantec’s North West water growth and AMP8 delivery, delivering safe, efficient and sustainable solutions. This is an opportunity to shape critical infrastructure and advance your leadership career in a top UK consultancy.

Pay / Benefits

• competitive salary
• bonus schemes
• enhanced pension plan
• private medical insurance
• group income protection & life assurance
• hybrid / flexible working

Responsibilities

• Lead mechanical design across water and wastewater schemes (treatment works, pumping stations, infrastructure).
• Guide projects from feasibility to detailed design, construction support and commissioning.
• Produce and review calculations, specifications and documentation.
• Provide technical leadership to multidisciplinary teams to ensure safe, efficient, sustainable designs.
• Mentor engineers and develop technical capability within the business.
• Collaborate with clients, project managers, contractors and supply chain partners to ensure successful outcomes.
• Support framework delivery, continuous improvement and business development.

Key requirements

• Degree qualified in Mechanical Engineering or related discipline.
• Chartered or Incorporated Engineer (CEng/IEng).
• Strong experience delivering detailed mechanical design in the UK water sector.
• Experience leading technical delivery across multidisciplinary projects.
• Excellent understanding of water and wastewater treatment processes, pumping stations and associated mechanical systems.
• Experience mentoring and supporting the development of engineers.
• Strong client-facing, communication and stakeholder management skills.
• Experience working with contractors and delivery partners.

• client-facing communication
• stakeholder management
• mentoring and coaching
• detailed mechanical engineering design
• water and wastewater treatment processes
• pumping stations and associated mechanical systems

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