Senior Engineer Asset Planning, Treatment
This is a unique opportunity to apply your expertise at scale, guiding complex treatment infrastructure decisions, working collaboratively, and shaping outcomes that directly impact communities.
Key systems-level role in the leadership of long-term planning and investment priorities for treatment facilities
Systems-level strategic planning for treatment assets
Based in our Petone office close to the train station, beach and shops
This is a full time position of 40 hours per week
The remuneration range for this role is $108,644 to $153,379 (including KiwiSaver) depending on skills and experience
The opportunity
Help shape the future performance, resilience, and investment priorities of the region’s water treatment facilities. As a Senior Engineer Asset Planning, Treatment, you’ll operate at the systems level – bringing deep technical insight into how treatment assets perform, where risks emerge, and how lifecycle and capital decisions influence long-term service outcomes.
You’ll lead the development and maintenance of Facility Management Plans, ensuring growth, climate resilience, and regulatory expectations are clearly integrated and evidenced. You’ll champion data-driven decision-making – interpreting condition assessments, performance analytics, and modelling to guide renewal strategies, process upgrades, biosolids management, and technology adoption.
Working closely with operational, technical, and regulatory stakeholders, you’ll scope and prioritise investigations, support robust investment decisions, and help ensure treatment systems continue to meet environmental, cultural, and community expectations. If you want to provide senior technical leadership and make a tangible impact on how our treatment infrastructure performs and adapts over time this is your opportunity.
About you
To be successful in this role you will bring:
8+ years in in water infrastructure planning
A bachelor’s degree in engineering (Chemical, Environmental, or Civil) or a related discipline
Advanced knowledge of treatment processes, asset lifecycle planning, and hydraulic/process modelling
Recognised expertise in condition assessment interpretation, performance analytics, and data-driven investment planning
Strong stakeholder engagement and technical engineering experience
A Chartered Professional Engineer (CPEng) or working towards this
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 20 August 2026
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
- Service Planning
- Locations
- 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.
