Principal Mechanical Engineer - Water Sector

Overview

As Principal Mechanical Engineer, you will lead mechanical project delivery across the full lifecycle for water and wastewater facilities. You will work with multidisciplinary teams to develop practical, sustainable solutions that meet quality, safety, and environmental standards. You’ll mentor engineers, contribute to governance, and support client relationships to deliver projects across AMP8. This role offers exposure to high‑impact, nationally significant water infrastructure with a collaborative culture. You will shape engineering outcomes that enhance resilience and operational performance.

Pay / Benefits

• competitive salary
• bonus schemes
• enhanced pension plan
• annual leave with buy/sell option
• private medical insurance
• life assurance

Responsibilities

• Lead technical delivery of mechanical engineering projects from feasibility to commissioning
• Collaborate with multidisciplinary teams, clients, and contractors to develop practical solutions
• Ensure designs meet quality, safety, and sustainability standards
• Provide technical leadership across treatment facilities, pumping stations, and mechanical systems
• Mentor engineers and support technical governance and project planning
• Engage with clients to deliver innovative engineering solutions

Key requirements

• Degree qualified in Mechanical Engineering
• Chartered or Incorporated Engineer (CEng/IEng) or actively pursuing
• Experience delivering detailed mechanical design within the UK water sector
• Strong understanding of water and wastewater infrastructure and mechanical systems
• Experience leading technical project delivery and coordinating multidisciplinary teams
• Excellent communication and stakeholder management
• Experience mentoring junior engineers

• effective communication
• stakeholder management
• mentoring and developing junior staff
• detailed mechanical design in the water sector
• mechanical systems for treatment facilities and pumping stations
• multidisciplinary project coordination

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