Senior Process Engineer

3 days ago


Mount Wellington, New Zealand Apex Water Limited Full time

ARE YOU READY TO TAKE THE NEXT STEP IN YOUR ENGINEERING CAREER? Look no further

We're looking for two talented Process Engineers – one senior and one intermediate – to join our high-performing team at Apex Water.

Whether you're an experienced leader in process design or an ambitious engineer ready to take on more responsibility, this is your opportunity to work across diverse projects in the municipal and industrial water and wastewater sectors, making a real impact for our clients and communities.

Apex Water are leaders in design and construct water and wastewater treatment plants.  Through our specialised design, build, installation and commissioning processes we are committed to helping New Zealand grow sustainably, thereby preserving our environment for future generations.  Apex employs a unique approach to projects through one point of accountability.  We work with some of NZ's most well-known companies in the municipal, dairy and food and beverage sectors.

The success of Apex Water is its people Loyalty, trustworthiness, motivation and a "can do" attitude is at the top of our list.   We look for staff with the right personality to fit into our close-knit team, as well the right skills and experience to do the job.   Valuing our company culture, we not only work together but we have fun together.

Please note, this role is full-time, permanent and requires frequent travel to sites.

The successful applicant will:

Senior Process Engineer

  • Take ownership of process design and lead the delivery of complex design packages.
  • Provide technical leadership, mentoring, and support to junior engineers.
  • Oversee and coordinate multidisciplinary design teams across multiple projects.
  • Work closely with management to shape project direction and ensure alignment with client objectives.
  • Liaise with construction teams and clients to ensure seamless project delivery from design through to commissioning.
  • Demonstrate deep technical knowledge across a range of water and wastewater treatment technologies.
  • Lead client consultation and contribute strategically to project scoping, planning, and execution.

Process Engineer

  • Support the design and delivery of process engineering packages under guidance from senior engineers.
  • Contribute to the preparation of process calculations, modelling, reports, and drawings.
  • Work collaboratively across project teams, assisting in coordination with construction and commissioning teams.
  • Participate in client meetings and help translate design concepts into practical solutions.
  • Develop a growing understanding of water and wastewater processes.
  • Gain exposure to the full project lifecycle—from pilot trails and concept through to commissioning—while building technical and project management skills.

We want someone who:

  • Holds a degree in Chemical or Environmental Engineering.
  • Has relevant professional experience:

  • Senior Process Engineer: 10–15+ years

  • Process Engineer: 3+ years
  • Understands the New Zealand Drinking Water Standards and the Drinking Water Quality Assurance Rules.
  • Demonstrates excellent communication, interpersonal, analytical, and problem-solving skills.
  • Can work independently and collaboratively as part of a multidisciplinary team.
  • Is comfortable working on-site and traveling as needed.
  • Is passionate about delivering exceptional results for clients—while enjoying the journey along the way

What we offer:

  • A dynamic and inclusive work environment that values innovation and teamwork.
  • Opportunities for professional growth and career advancement.
  • A strong commitment to ongoing learning and development.
  • A range of employee benefits to support work/life balance and wellbeing.

Does this sound like you? Please click the apply button along with your CV and covering letter.

Successful candidates must have the right to live and work in New Zealand.



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