Lead design of municipal and industrial wastewater treatment projects in Wellington

Lead/Principal Water Engineer (Process)

At Worley, we're delivering some of New Zealand's most important water infrastructure projects, helping communities improve water quality, environmental outcomes, and long-term resilience.

This role offers the opportunity to work on a diverse range of municipal and industrial wastewater treatment projects, supporting everything from planning and feasibility studies through to detailed design, project delivery and construction support.

Working alongside a multidisciplinary team of water, civil, mechanical, electrical and environmental specialists, you'll play a key role in developing innovative treatment solutions that address complex water and wastewater challenges.

What You'll Do

  • Develop process designs for municipal and industrial wastewater treatment facilities.
  • Undertake wastewater treatment planning, feasibility assessments and option evaluations.
  • Prepare Process Flow Diagrams (PFDs), Process and Instrumentation Diagrams (P&IDs), and treatment plant layouts.
  • Perform hydraulic modelling and process calculations for treatment systems.
  • Undertake biological and process modelling to support treatment plant design and optimisation.
  • Use specialist wastewater treatment and process modelling software to evaluate and develop treatment solutions.
  • Contribute to proposals, technical reports, design documentation and client presentations.
  • Collaborate with multidisciplinary project teams to deliver high-quality project outcomes.
  • Provide technical leadership, mentoring and support to junior engineers and developing professionals.
  • Support business development activities, customer engagement and tender submissions.

What You'll Bring

  • A degree in Chemical, Process, Environmental, Civil or a related Engineering discipline.
  • Chartered status or progress toward chartership in a relevant engineering field.
  • Demonstrated experience delivering wastewater treatment planning and design projects.
  • Strong understanding of biological treatment processes, hydraulic design principles and wastewater treatment technologies.
  • Experience using process and hydraulic modelling software such as BioWin, GPS-X, WEST, SUMO or similar tools.
  • The ability to develop complex process flow diagrams and technical design documentation.
  • Strong analytical, problem-solving and communication skills.
  • A collaborative approach and a passion for delivering sustainable water solutions.
  • Experience mentoring, supporting and leading junior engineers.
  • An interest in supporting business development activities and contributing to tender submissions.
  • A track record leading process design for plant upgrades, planned maintenance projects, renewals and new-build treatment facilities.
  • Current New Zealand working rights.

Why You Should Apply

  • Opportunity to contribute to the sustainable management of New Zealand's water resources and infrastructure.
  • The chance to join our growing Water team and help shape its future direction and growth.
  • Career pathways across technical leadership, project leadership and people leadership as the Water business continues to expand.
  • The opportunity to work closely with our Water Sector Lead and influence how our Water capability evolves to meet market demand.
  • Exposure to the full project lifecycle through Worley's integrated consulting, engineering, procurement and construction capability.
  • Work alongside engineers who understand what construction-ready design really means.
  • Join a fun, inclusive and globally connected team of professionals.
  • Flexible working arrangements that support work-life balance.
  • Competitive remuneration and employee benefits.
  • 22 weeks paid parental leave for primary carers.
  • The option to purchase up to 20 additional leave days each year.
  • Access to mentoring, professional development and career growth opportunities.
  • A supportive team culture built on respect, safety and collaboration.
  • Inclusive leadership committed to supporting diverse career journeys.

We want our people to be energised and empowered to drive sustainable impact. Our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation.

We're building a diverse, inclusive and respectful workplace where everyone feels they belong, can be themselves and is heard.

And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills and supporting the transition of our workforce to become experts in today's low-carbon infrastructure and technology.

Whatever your ambition, there's a path for you here and no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities and be part of delivering sustainable change.

Apply Now
Save