Senior Estimator (Mechanical/Plumbing)

About the role

Williams Plumbing based in Belgrade, Montana, is seeking a Senior Estimator to lead the development of accurate, competitive cost estimates for large and complex mechanical and plumbing projects. This role involves providing oversight and final validation of complex estimates, leading bid strategy and risk assessment, performing deep analysis of construction documents, directing vendor and subcontractor strategy, and mentoring the estimating team.

Responsibilities

• Provide oversight and final validation of complex estimates, ensuring accuracy, completeness, and alignment across all scopes
• Lead bid strategy and risk assessment in partnership with Estimating Manager, shaping pricing approach for high-value projects
• Perform deep analysis of construction documents to identify scope gaps, design risks, and cost exposures
• Direct vendor and subcontractor strategy, including leveling, negotiations, and final buyout recommendations
• Own final estimate development, including full cost modeling (labor, material, equipment, subcontractors, overhead, contingency)
• Mentor the estimating team, driving standards, consistency, and continuous process improvement

Requirements

Qualifications include 7+ years of estimating experience with a track record of leading large, complex mechanical/plumbing bids, expert-level knowledge of HVAC, plumbing, and piping systems, proven ability to own and deliver full-scope estimates independently for high-value, multi-trade projects, advanced expertise in interpreting drawings, specs, contracts, and identifying risk gaps before bid, demonstrated experience in leading bid strategy, subcontractor/vendor negotiations, and final pricing decisions, and strong leadership presence with experience mentoring estimators and influencing team standards and performance.

Benefits & Perks

At Williams, we offer competitive benefits, growth opportunities, and a culture that values work-life balance. These include:

• Competitive Wage
• Comprehensive Health Coverage (Medical, Dental, Vision)
• 401(k) Employer Match (Up to 8%)
• Time Off & Work-Life Balance (Paid Time Off, Holidays)
• Growth & Development (Williams Academy, Referral Bonuses)
• Extra Perks & Fun (Discounted Gym Memberships, Pet Insurance, Company Events)