Job Description

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About Us
n Gamuda Engineering is a global leader delivering major Transport, Civil, and Energy Infrastructure projects across Australia. As an integrated energy partner, Gamuda funds, develops and builds utility-scale clean energy assets - including solar, wind, and Battery Energy Storage Systems (BESS) such as the 450 MW solar / 600 MW BESS Mortlake Hybrid project in Victoria.

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With corporate offices in Melbourne, Sydney, and Brisbane, we are rapidly expanding our national clean energy division.

About the Role n

We are seeking an experienced Senior Estimator - Renewables to join our Pre-Contracts & Tenders team. Working closely with our Estimating Manager and Renewables Lead, you will lead first-principles, resource-based estimating, technical cost modelling, and pricing strategies for major utility-scale renewable energy bids ($100M–$500M+). This role spans solar PV, BESS architecture, wind farm balance of plant (BOP), and HV grid connection infrastructure under EPC and D&C; delivery models.

Key Responsibilities n

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- Build detailed, resource-bottom-up cost models (labour, plant, materials, subcontracts) for PV solar arrays, BESS, wind civil/electrical BOP, and HV substations.
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- Source and evaluate Tier-1 OEM market quotes for PV modules, inverters, BESS enclosures, wind turbines, and power transformers.
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- Interpret RFT drawings, single-line diagrams, and yield reports to compile Work Breakdown Structures (WBS/CBS)



and complete Bills of Quantities (BoQs).
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- Prepare trade package RFQs for civil, structural, and electrical subcontractors, conducting technical price normalization and scope gap analysis.
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- Lead quantitative risk modelling, contingency sizing, and escalation analysis for executive management bid review presentations.
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Skills and Experience nn
- Degree in Electrical, Civil, or Renewable Energy Engineering, Quantity Surveying, or Construction Management.
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- 7+ years estimating experience within a Tier 1/2 contractor or EPC, delivering first-principles cost models for major utility-scale renewables projects ($100M+).
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- Advanced proficiency in first principles estimating software (e.g. Expert Estimation, Candy, or Benchmark) and complex MS Excel cost models.
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- Strong expertise in solar PV balance of plant, BESS system architecture, HV substation pricing, equipment lead times, and EPC/D&C; contract structures.
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What We Offer nn
- Key pre-contracts role shaping technical pricing and win strategies on major national clean energy tenders.
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- Corporate office locations in Melbourne, Sydney, or Brisbane with flexible working support.
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- Collaborative, high-performing setting with clear executive pathways supported by a Tier-1 global group.
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Gamuda Australia encourages and supports a diverse workforce, including candidates from overseas and current Visa holders.

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📌 Senior Estimator (Sydney)
🏢 Gamuda Group
📍 Sydney