Build Something Bigger with Saltire Infrastructure

At Saltire Infrastructure, we're not interested in standing still.

We've built a strong reputation delivering complex water, utilities and civil infrastructure projects across Western Australia, and we're now entering the next phase of growth.

Our vision is simple: become bigger, better, and more capable while remaining an employer of choice and a trusted delivery partner.

As we continue to grow, we're seeking an experienced Estimating Lead with a strong background in water infrastructure to take ownership of our estimating and tendering function.

We're looking for someone who brings more than general civil construction estimating experience. You'll have a proven track record of personally preparing and pricing water infrastructure tenders, understand the technical and commercial complexities of these projects, and be confident leading tenders from initial review through to submission.

Experience preparing tenders for Water Corporation WA or comparable Australian water authorities will be highly regarded.

This is a hands‑on leadership opportunity for an experienced estimator who enjoys both the technical detail of pricing projects and the commercial responsibility of securing profitable work.

Why Join Saltire?

You'll join a growing WA contractor where your expertise will have a direct impact on the projects we secure and the future direction of the business.

We offer:

- A key leadership position reporting directly to the Director
- Exposure to diverse and technically challenging water infrastructure projects
- The autonomy to improve estimating systems, processes and tender strategies
- Direct involvement in commercial decisions and business growth
- The opportunity to develop and lead the estimating function
- Competitive remuneration package and vehicle

About the Role





You'll take ownership of Saltire's estimating and tendering activities, with a particular focus on water infrastructure projects.

Your responsibilities will include:

Prepare, develop and review detailed first-principles estimates for water and associated civil infrastructure projects

Lead tender submissions from initial assessment through to final pricing and submission

Review drawings, specifications, scopes of work and technical documentation

Undertake quantity take-offs, build-ups, productivity calculations and cost assessments

Price labour, plant, materials, subcontractor packages and construction methodologies

Identify project-specific risks, opportunities, exclusions and commercial considerations

Obtain and evaluate supplier and subcontractor quotations

Develop competitive pricing strategies while protecting project margins

Lead tender reviews and present recommendations to senior management

Work closely with project delivery teams to validate construction methodologies and project costs

Coordinate tender handovers following successful project awards

Improve estimating tools, processes, cost databases and reporting

Mentor and support other estimators as the business grows

What We're Looking For

Essential experience and capabilities:

Demonstrated experience estimating water infrastructure construction projects for a contractor

Solid hands‑on experience preparing detailed first-principles estimates and competitive tender submissions

Proven ability to personally price and manage complex infrastructure tenders





Sound understanding of water infrastructure construction methodologies, project costs and delivery risks

Experience preparing quantity take-offs, cost build-ups and subcontractor pricing assessments

Robust commercial understanding, attention to detail and ability to work to tender deadlines

Ability to lead the estimating process and work collaboratively with operational and management teams

Highly Desirable:

Experience preparing and submitting tenders for Water Corporation WA, or equivalent Australian water authorities or utilities

Experience pricing water pipelines, water and wastewater infrastructure, pipeline renewals, pump stations or associated civil works

Familiarity with water authority specifications, standards, tender documentation and procurement requirements

Experience leading or mentoring estimators

Experience improving estimating systems, processes and commercial outcomes

The Opportunity

This role will suit an experienced Senior Estimator or Estimating Manager who has developed strong technical expertise in water infrastructure and is ready to take ownership of an estimating function.

We value practical estimating capability, sound commercial judgement and a demonstrated track record of delivering competitive, well-considered tenders.

If you have personally priced water infrastructure projects and want to play a leading role in the growth of an established WA contractor, we'd like to hear from you.

Saltire Infrastructure is a leading technology-focused civil engineering company specialising in innovative solutions for the water industry.

Our mission is to “Keep the Water Flowing” by delivering cutting-edge live pipeline intervention, inspection, repair, and renewal technologies that minimise disruption and maximise value for utilities, councils, and contractors.

📌 Estimating Lead (Perth)
🏢 Saltire Infrastructure
📍 Perth