Senior Mega Projects Estimator: Water/Wastewater Plants

Core & Main; Missouri; On-site; USD 95,000 - 130,000; Full time

Job summary

Core & Main, based in St. Louis, is a leader in water infrastructure supply.

The Mega Projects Estimator – Water/Wastewater Treatment Plants – Critical Infrastructure Group (CIG) develops accurate quantity takeoffs for complex projects and supports both bid work and design-build delivery, guiding material selections and constructability. The role collaborates with sales, engineering, and design teams to back winning bid strategies, ensure regulatory compliance, and deliver exceptional customer

Qualifications

• 5+ years of estimation experience in water/wastewater or critical infrastructure.
• Experience with quantity takeoffs from plans and specs.
• Knowledge of civil and mechanical infrastructure systems.

Responsibilities

• Develop detailed material quantity takeoffs for infrastructure projects.
• Support design-build delivery with early-stage material & constructability input.
• Assist bid strategy, prepare quotations, and support sales.

Skills

Attention to detail

Analytical skills

Communication skills

Collaboration

Prioritization

Education

BS/BA in Construction Management or Engineering

Job description

Core & Main, based in St. Louis, is a leader in water infrastructure supply.

The Mega Projects Estimator – Water/Wastewater Treatment Plants – Critical Infrastructure Group (CIG) develops accurate quantity takeoffs for complex projects and supports both bid work and design-build delivery, guiding material selections and constructability. The role collaborates with sales, engineering, and design teams to back winning bid strategies, ensure regulatory compliance, and deliver exceptional customer