Principal Civil Engineer

Peter Duffy Limited is part of United Infrastructure, a dynamic and rapidly expanding business delivering critical infrastructure projects across the UK.

With a strong heritage and reputation built over decades, Peter Duffy Limited specialises in civil engineering, utility, and infrastructure services. Our teams deliver high-quality, safe, and innovative solutions for clients across water, wastewater, and broader utility networks.

As part of United Infrastructure, Peter Duffy Limited combines local expertise and trusted delivery with the scale, resources, and investment of a national group. Together, we are strengthening communities, supporting the UK’s critical infrastructure, and building a skilled workforce for the future.

• Be a qualified engineer and ideally Chartered, with membership of a relevant professional institution such as the Institution of Civil Engineers (ICE).
• Have demonstrable civil design experience within the UK water sector, including projects involving water treatment, drainage, clean water networks, rising mains, and sewer separation.
• Essential understanding of water industry standards and guidance, such as CIWEM and CESWI.
• Be familiar with quality, environmental, and information management procedures in accordance with ISO 9001, ISO 19650, and ISO 14001.

• Be technically competent in hydraulic design principles, with the ability to undertake manual calculations where software tools are not applicable. Experience with hydraulic profiling would be advantageous.
• Knowledge and experience of Haz Op / ALM requirements.
• Have extensive knowledge of water industry standards, such as WIMES & CESWI.
• Be familiar and ability to lead with the Construction (Design and Management) Regulations (CDM).
• Demonstrate a commitment to continuous professional development, keeping up to date with industry innovations and developments in design software and tools.
• Build and maintain positive working relationships with all members of the design teams, as well as internal and external stakeholders.
• Lead by example, promoting high standards and supporting the adoption of best practice procedures within the team.
• Demonstrate strong interpersonal skills, with a proactive, positive, and solution-focused approach to work.
• Show a willingness to learn, develop, and continually improve your skills, while embracing innovative and forward-thinking ideas.
• Uphold company values, ensuring respect for colleagues, the public, and the environments in which we operate.
• Be committed to continuous professional development, keeping up to date with industry innovations, standards, and technological advancements.

Join us at Peter Duffy Limited and be part of our mission to deliver innovative and sustainable solutions to the complex infrastructure needs of the UK.