Senior Hydraulic Modeller Wastewater
With an eye on the environment and impact to communities, be involved in the technical direction across the organisation in the development of strategic & operational Wastewater models.
Provide advice for complex infrastructure projects in Wellington
Influence decision makers
Petone-based role with easy access to rail, coast and local amenities
This is a full time position of 40 hours per week
The remuneration for this role is $112,118.39 to $158,284.79 (including KiwiSaver) depending on skills and experience
The opportunity
As a Senior Modeller Wastewater you will develop, maintain and operate wastewater hydraulic models and contribute to the development of operations and capex proposals. Your expertise and comprehensive skills will be utilised across the company. You will take a collaborative approach, playing an active role in advising on various infrastructure projects and overseeing the management of modelling consultants.
You will get to:
Provide technical advice to network operations, planning, engineering, and asset management teams
Conduct thorough technical reviews (peer review) of outsourced model build projects and master planning studies
Support strategic network planning and development control
Support the organisation with Modelling insights and operational delivery
Project manage external model build contracts
About you
To be successful in this role you will bring:
A Tertiary qualified in a relevant discipline (for example, engineering or science)
Ideally 10+ years' experience in Wastewater hydraulic modelling
Modelling project management experience
A continuous improvement mindset with strong data analytics skills
Ability to influence
Strong written and verbal communication skills including being able to communicate complex technical information into simple language
Experience in coaching and mentoring
Benefits
At Tiaki Wai, our purpose extends beyond delivering great water services for the region; we foster a thriving community, support a diverse workforce, and offer supportive development opportunities. We genuinely care about your safety and wellbeing.
Our benefits include:
Flexible working arrangements including up to 2 days working from home
Comprehensive wellbeing programme, including one paid wellbeing day annually
Formal and informal professional development opportunities
5 weeks annual leave accrual will be available following 2 years of continual service
For a full list of our employee benefits click here.
About us
Tiaki Wai is a council-owned organisation responsible for managing the delivery of drinking water, wastewater, and stormwater services across Hutt Valley, Porirua, and Wellington.
We manage public-owned extensive water infrastructure and oversee the delivery of safe and reliable services for our communities. We focus on long-term investment, asset management, maintenance, and delivering major infrastructure projects that support public health, environmental protection, and regional growth.
Water is a precious taonga. At Tiaki Wai, we put care into every drop and are guided by our values of Integrity, Care, and Leadership. We work directly with water consumers and in partnership with councils and mana whenua to deliver better water outcomes for current and future generations.
Applications close: Thursday 3 December 2026
We will be reviewing applications as they are received and may progress suitable candidates prior to the closing date.
How to apply
To view a copy of the position description: click here
To apply for the role, click on the ‘apply’ button or visit the Tiaki Wai Careers site, if you are a Tiaki Wai employee please apply using your work email.
For further information, email: JoinUs@tiakiwai.co.nz
Applicants for safety sensitive roles will be required to undergo drug and alcohol testing prior to commencing employment with Tiaki Wai. You must also be legally entitled to work long-term in New Zealand or eligible to obtain a working visa.
- Department
- Strategy and Planning
- Role
- Modelling
- Location
- Petone Office
Petone Office
Staff benefits
1. Inclusive Culture: It is important to us that people love our culture. We embrace a workplace where diversity is celebrated, and inclusivity is at our core. Our team is united by passion, dedication, and a shared care for water and our community.
2. Safety and Support: We provide an Employee Assistance Scheme for crucial personal support, along with wellbeing and lifestyle education delivered through our Wellbe Team, ensuring you feel supported in and out of the workplace.
3. Health is Wealth: We prioritise your health with an annual voluntary health "warrant of fitness," immunisations, and flu vaccinations. Moreover, enjoy annual subsidised vision testing and contributions toward glasses to ensure clear vision.
4. Work-Life Balance: Where possible there is access to flexible work practices. And take advantage of our annual leave, reaching five weeks after three years of service, and 10 days sick leave from starting with us. In addition, take one paid day a year for your personal Wellbeing. We also offer parental leave and partner entitlements to support you during significant life moments.
5. Comprehensive Benefits: We have partnered with providers for discounted Southern Cross medical insurance, periodic vision and hearing tests, and eyewear subsidies. You can also access discounts at a range of retailers via Boost. Gain access to top-notch gear, machinery, PPE, and tools, fostering a safe work environment if you are “on the tools”. We also offer a staff referral bonus paid when a person is recruited for a senior front line position, and we may offer relocation support if you need to move into the district to work here.
6. Professional Growth: Grow your skills with a range of development opportunities. Boosting your personal and work career.
7. Community Connection: You can take one paid day a year to participate in voluntary work on a water-related activity. And maybe join our active Waiata group and be part of a community that works together, sings, and thrives together.
