**Benefits*** Shape bids that power national energy transition* Work with experts in complex infrastructure tenders* Build estimating capability across a growing team* Influence methodology for major HV line projects* Support tenders across multiple Australian regions* Drive accuracy in first‐principles cost modelling* Join a global leader delivering complex civil works* Contribute to critical national transmission upgrades**About the Project**ACCIONA delivers complex civil and infrastructure projects across Australia. Our Transmission team supports national tenders that strengthen networks across varied terrain. You help shape bids that support energy transition and long term infrastructure resilience. **About the Opportunity/Position**You develop first principles estimates for overhead transmission lines and/or substation and from 66 kV to 500 kV. You interpret drawings, methods and market pricing to build competitive tender submissions. You work with the National Transmission Estimating Manager and collaborate with construction, engineering and procurement teams. You also support tender governance, reviews and BAFO responses.* Build first principles cost models* Deliver accurate quantity take off* Coordinate RFQs and assess pricing* Maintain cost databases* Define construction methods and rates* Support tender pricing reviews**Required Skills and Competencies*** HV line and substation construction knowledge* First principles estimating skill* Advanced Excel and estimating systems* Engineering degree or trade* 8+ years infrastructure experience*ACCIONA has been given the Top Employer 2022, 2023, 2024 & 2025 certification in Australia, which certifies the company's commitment to excellence in human resources management and those who focus on putting their people first through their exceptional HR policies. Since establishing a presence in Australia in 2002, ACCIONA has made significant investments in local opportunities and project development. ACCIONA employs more than 3,000 people in its renewable energy, infrastructure and water projects across Australia & New Zealand.**We are an Equal Opportunity Employer and promote equality and diversity. Indigenous Australians and candidates from minority groups are encouraged to apply.***Job Description**#J-18808-Ljbffr