Senior Estimator jobs

Ready to make a splash in your career? WaterNSW is looking for an experienced Estimator to become a trusted subject matter expert within a diverse portfolio of water and infrastructure projects, ranging from asset renewals and upgrades to major capital works.

This Full-time, Max-term position for a period of two years will join the Portfolio Management Office, where the estimating function has recently been brought together., The role offers a unique opportunity to help shape and mature the way estimating services are delivered across the organisation, introduce new ideas and best practice methodologies, and play a key role in supporting project outcomes across the entire lifecycle.

Our Perks and Benefits:

At WaterNSW, we believe that our employees should be as well taken care of as our rivers, dams, and pipelines, that’s why we offer a load of benefits.

• Flexible working – 2 days in the office
• Work a 9-day fortnight at Full pay on the Enterprise Agreement
• Up to 16 weeks paid parental leave
• Fertility leave
• Corporate wear allowance
• Professional development and educational assistance
• Access to remote area benefit packaging – based on work location
• Attractive Salary $137,125 - $150,850 + 12% Super
• And so much more!

What you’ll do:

• Develop high-quality cost estimates across the full project lifecycle, from early-stage concepts and feasibility studies through to detailed delivery budgets.
• Lead quantitative risk-based estimating activities, incorporating uncertainty and risk analysis into project cost forecasts.
• Manage multiple estimating assignments across a diverse portfolio of civil, mechanical and electrical infrastructure projects throughout NSW.
• Analyse cost trends across projects, locations and delivery models to strengthen future estimating accuracy and organisational knowledge.
• Build and maintain estimating tools, standards, processes and cost databases that support continuous improvement and consistency across the portfolio.
• Partner with Project Managers, Engineers and key stakeholders to provide expert estimating advice that supports informed investment and delivery decisions.

What we are looking for:

• Tertiary qualification in Engineering, Quantity Surveying, Construction Management or a related discipline, or equivalent Cost Engineering experience.
• Proven experience as an Estimator within infrastructure, utilities, water, transport or other asset-intensive environments.
• Strong expertise in developing estimates across the full project lifecycle, from early-stage concept and feasibility estimates through to detailed delivery and construction estimates.
• Experience supporting a portfolio of projects with competing priorities, delivering high-quality estimates within tight timeframes.
• Proven capability in quantitative risk analysis and probabilistic estimating, with experience using @Risk or similar modelling tools preferred.
• Strong commercial acumen with the ability to assess designs, project assumptions, cost drivers and delivery risks to produce practical and reliable cost outcomes.
• Exposure to large, geographically dispersed project portfolios across metropolitan and regional locations. (Highly regarded)

Who we are:

WaterNSW operates the state’s dams, capturing and storing water, and then supplying it ready for distribution – for the environment, agriculture, industry and the community. With 41 major dams and hundreds of waterways across the state, we play a vital role at the source of the state’s water, delivering two thirds of all water used in NSW.

We’re the people taking care of the state’s water at the source – capturing, storing, delivering.

How we will support you:

At WaterNSW, we balance flexibility – and the way we work – with the needs of the business, our teams, and us as individuals. When it comes to working in an office, we work in a hybrid way. If you’re required to be in the field or on site, the benefits of flexibility can be achieved in other ways, such as through a condensed work week.

We are proud to be a WORK180 Endorsed Employer and are committed to providing equal opportunities for women. Visit our WORK180 page to access our benefits and career development opportunities.

Our commitment & culture:

No matter how or where you work, safety is the number one priority. This means the physical and mental safety of you, your colleagues, and the public.

WaterNSW is committed to building a workforce that reflects the diversity of the communities we serve. We strongly encourage Aboriginal and Torres Strait Islander peoples, Veterans, and people from all backgrounds to apply. We celebrate the unique perspectives, knowledge and lived experience you bring and are committed to ensuring an inclusive, supportive and respectful workplace for everyone.

Find out more at waternsw.com.au

For more information, please reach out to: nathan.hollis@waternsw.com.au

Please note applications for this position will close on Friday 7th August 2026 at 11.59 pm.

You must have full work rights in Australia to qualify for all positions at WaterNSW.

We are a 2026 Circle Back Initiative Employer – we commit to respond to every applicant.

Privacy and collection of your personal information
If you apply for a position via our website or recruitment@waternsw.com.au, WaterNSW may collect your personal information. Please visit WaterNSW’s Privacy Page to view the Careers Collection Notice for more information about how WaterNSW collects, uses, and discloses your personal information.