Principal Water & Wastewater Treatment Engineer

What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field. You can embrace your curiosity in a culture that celebrates new ideas and diverse perspectives enabling you to do the best work of your life. You can experience a world of opportunities to shape a career as unique as you. WSP is one of the world’s top professional services firms, bringing together some of the brightest engineers, advisors and scientists from across the globe. We exist to shape communities to advance humanity. We see the world through a Future Ready® lens, fuelled by a shared commitment to making a positive impact—one project and community at a time. Principal Water & Wastewater Treatment Engineer This is a senior technical opportunity within WSP’s national Water and Wastewater Treatment team, suited to an experienced treatment engineer with strong technical judgement, client focus, and leadership capability. As a Principal Water and Wastewater Treatment Engineer, you will provide expert advice across water and/or wastewater treatment projects, leading complex investigations and designs from concept through to construction. You’ll work closely with multidisciplinary teams and clients, shaping high‑quality outcomes while mentoring others and promoting technical excellence across the business. The role Provide senior technical leadership on water and/or wastewater treatment projects Lead and review investigations, feasibility studies, designs and technical reports Apply sound engineering judgement across design, verification and peer review Work collaboratively within multidisciplinary project teams Build and maintain strong client relationships, clearly communicating technical solutions Contribute to bids and proposals, including technical inputs and risk considerations Mentor and support engineers and graduates, fostering a culture of excellence About you Bachelor of Engineering (Chemical/Process, Civil or Mechanical) Preferably minimum of 10 - 15 years’ professional experience in a related discipline Chartered Professional Engineer (CPEng) or equivalent (or working towards) Extensive experience in water and/or wastewater treatment engineering Proven experience providing technical leadership and review Strong communication skills and a client‑focused mindset A collaborative approach and commitment to professional standards Imagine a better future for you and a better future for us all. We are proud to have the blueprint of Aotearoa New Zealand in our DNA and our 2,000+ expert professionals in 24 offices are united by the common purpose of creating positive, long-lasting impacts on the communities we serve. Join our close-knit community of talented individuals who share your passion for making a positive impact. Our global team includes more than 75,000 employees, working together to make a difference in communities both close to home and around the world. With us, you can. Apply today. We will review applications as they come in, so if this opportunity sounds like you, don’t wait to apply! #NZAucklandJobs #NZWater