Estimator II - CIG

Based in St. Louis, Core & Main is a leader in advancing reliable infrastructure with local service and nationwide support. As a specialty distributor focused on water, wastewater, storm drainage and fire protection products, Core & Main serves municipalities, private water companies and professional contractors across municipal, non‑residential and residential markets. With over 370 locations nationwide, the company offers local expertise backed by a national supply chain.

Core & Main’s 5,700 associates are committed to helping communities thrive with safe and reliable infrastructure. Visit  to learn more.

The Estimator II – Critical Infrastructure Group (CIG) is responsible for performing detailed material quantity takeoffs and supporting bid efforts for a variety of infrastructure projects with moderate complexity. This role works more independently than Estimator I, applying developing technical knowledge of materials, construction methods, and project specifications. Estimator II collaborates with sales, Pre‑Bid, and engineering teams to help ensure accurate scope development and competitive bid proposals.

• Independently performs material quantity takeoffs for standard and moderately complex projects.
• Interprets construction drawings, specifications, and notes to determine accurate material requirements.
• Identifies specialty materials with some guidance.

• Prepares scopes and provides material lists for sales and customers with increasing independence.
• Participates in pre‑takeoff and post‑takeoff discussions to support knowledge transfer.
• Works with contractors and sales teams to clarify scope, project needs, and standard value‑engineering opportunities.

• Communicates with vendors to obtain basic product information, lead times, or material guidance.
• Coordinates with the Pre‑Bid team to maintain accurate scope definitions.

• Continues to improve plan‑reading, takeoff accuracy, and product knowledge.
• Begins mentoring Estimator I personnel by answering questions and reviewing simple takeoffs.

• Growing technical expertise in infrastructure materials
• Solid analytical skills
• Effective communication with internal and external partners
• Ability to manage multiple tasks and deadlines
• Increasing confidence in takeoff responsibilities

• 2–4 years of estimation experience or related industry background
• Demonstrated ability to perform accurate takeoffs from plan sets
• Experience engaging with contractors or vendors preferred

• Associate degree or Bachelor’s degree preferred
• Construction Management, Engineering, or related discipline
• Equivalent industry experience considered

Core & Main is an Equal Employment Opportunity employer. Employment at Core & Main is based solely on a person’s merit and qualifications directly related to professional competence. Core & Main does not discriminate against any employee or applicant on the basis of race, creed, color, religion, national origin, nationality, ancestry, age, disability, veteran status, pregnancy or related condition (including breastfeeding), affectional or sexual orientation, gender identity or expression, marital status, status with regard to public assistance, citizenship, or any other basis protected by law.

None of the questions in this application are intended to elicit information regarding any protected characteristics, nor imply any limitation, illegal preferences or discrimination based upon non‑job‑related information or protected characteristics.

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