Estimating Manager

Western Power; Perth; Hybrid; AUD 180,000 - 260,000; Full time

Benefits offered by this job

Flexible work

Extended leave

Salary packaging

Health & gym discount

Recognition programme

Renewable energy culture

Wellness leave days

End-of-trip facilities

Job summary

Western Power is seeking a seasoned Senior Estimator to lead cost planning and investment assurance for major capital programs in Western Australia.

You will develop and validate complex cost estimates, apply AACE standards, and guide project teams through governance and risk analysis while mentoring the estimating workforce.

Join a team driving the transition to renewable energy and a balanced, sustainable network for the WA community.

Qualifications

• Bachelor’s Degree in Construction Management, Quantity Surveying, Business or Commerce.
• 20+ years’ experience in cost planning, estimating or major capital infrastructure projects.
• Advanced knowledge of estimating methodologies and cost modelling.
• Proven leadership and mentoring of estimating teams.

Responsibilities

• Lead development and validation of complex cost estimates across project lifecycle.
• Provide guidance on scope, cost, risk and estimation methodologies.
• Drive governance, consistency and continuous improvement in estimating practices.
• Mentor and develop estimating professionals and foster best-practice.

Skills

Cost estimating

Cost modelling

Forecasting

Risk assessment

Cost escalation

Leadership

Mentoring

Stakeholder engagement

Education

Bachelor’s in Construction

Quantity Surveying

Business

Commerce

Job description

Join Western Power's Transmission Development team and play a key role in shaping the future of Western Australia's energy network. In this role, you will provide strategic leadership across estimating, cost planning and investment assurance activities for major capital infrastructure programs. You will oversee the development and assurance of complex cost estimates, drive consistency across estimating practices, and provide trusted advice that supports critical investment decisions across Western Power's growing portfolio of network projects.

Your Role in Action

Act as Western Power's principal estimating and cost planning specialist, providing expert leadership, guidance and assurance across a portfolio of major capital infrastructure projects and programs.

Lead the development, review and validation of complex cost estimates across all phases of project development, ensuring alignment with AACE Class 5 to Class 1 estimating standards and industry best practice.

Provide authoritative advice on project scope, cost, risk and estimating methodologies, supporting project teams, senior leaders and executives to make informed investment decisions.

Drive consistency, governance and continuous improvement across estimating frameworks, processes and assurance practices, ensuring estimates are accurate, transparent and defensible.

Lead and mentor estimating professionals, building capability through coaching, technical guidance and the promotion of best-practice estimating disciplines.

Assess project assumptions, escalation factors, risks and market conditions, translating complex technical and commercial information into clear recommendations that support portfolio planning and executive decision-making.

What Makes You a Great Fit

Bachelor’s Degree in Construction Management, Quantity Surveying, Business or Commerce; or relevant related work experience.

At least 20 years’ experience in cost planning, estimating, investment assurance or major capital infrastructure projects, with demonstrated expertise developing and reviewing estimates across all estimate classifications.

Advanced knowledge of estimating methodologies, cost modelling, forecasting, quantitative risk assessment and cost escalation practices.

Proven experience leading and mentoring estimating teams while driving governance, consistency and continuous improvement across project portfolios.

Exceptional written, verbal and presentation skills, with the ability to influence stakeholders and confidently engage with senior leaders and executives.

A collaborative and curious approach, comfortable working in ambiguity, building relationships and bringing people together to achieve quality outcomes.

By joining Western Power, you will contribute to powering a cleaner energy future. We are dedicated to fostering career development and promoting a healthy work-life balance, empowering you to drive innovation as we develop a network that will serve the Western Australian community for generations. You will also benefit from a range of perks and opportunities, including:

• Over 50% of our employment opportunities are driven by career progression.
• Flexible work arrangements to support part time work, working hours and working from home arrangements.
• The opportunity to purchase up to four weeks of additional leave per year.
• Access to salary packaging, social club activities, and discounted health insurance and gym membership.
• An award-winning employee recognition and benefits programme.
• An innovative team culture that’s enabling the transition to renewable energy and decarbonisation.
• In addition to standard leave, enjoy three wellness leave days each year.
• Access to end-of-trip facilities at our Perth office and South Metro Depot, perfect for cyclists.
• 22 weeks paid parental leaveand 5 days of First Nations cultural leaveto support family and cultural connections.

Applications close on 4 September 2026

We value diversity and inclusivity, encouraging applications from all backgrounds, including women, Aboriginal and Torres Strait Islander people, and LGBTQIA+ communities. As a WORK180-endorsed employer for women, we are proud of our commitment to inclusion. You can learn more about this through our Reconciliation Action Plan and Disability Access and Inclusion Plan.

Learn more about Western Power here: About (westernpower.com.au)

Find out how we’re building A Network for Life: A network for life (westernpower.com.au)