What are the responsibilities and job description for the Senior Estimator (Mechanical/Plumbing) position at Williams Plumbing / Williams Civil Construction?
Williams Plumbing based in Belgrade Montana is looking for a Senior Estimator to lead the development of accurate, competitive cost estimates for large and complex mechanical and plumbing projects. This role goes beyond just building estimates - you’ll help shape bid strategy, mentor team members, and ensure consistency and quality across all estimating efforts.
If you have deep industry knowledge, strong analytical skills, and enjoy leading others while staying hands-on, this is a great opportunity to make an impact.
About Williams
Williams is the Northwest’s largest plumbing contractor. From hospitals to restaurants to high-end custom homes, we’re building Montana into the future. Our team is led by the most experienced plumbers in the industry. We have the largest apprentice program in the state. We have the manpower to take on the most exciting and ambitious projects. Plumbing is the foundation of our company and we take pride in training and retaining the best plumbers this side of the Rocky Mountains.
Located in beautiful Belgrade, Montana, outdoor adventures surround us. There’s no better place to live than Big Sky Country. Together, we build and play in Montana.
What You'll Do
At Williams, we take care of our team with competitive benefits, growth opportunities, and a culture that values work-life balance. Here’s what you can expect:
If you have deep industry knowledge, strong analytical skills, and enjoy leading others while staying hands-on, this is a great opportunity to make an impact.
About Williams
Williams is the Northwest’s largest plumbing contractor. From hospitals to restaurants to high-end custom homes, we’re building Montana into the future. Our team is led by the most experienced plumbers in the industry. We have the largest apprentice program in the state. We have the manpower to take on the most exciting and ambitious projects. Plumbing is the foundation of our company and we take pride in training and retaining the best plumbers this side of the Rocky Mountains.
Located in beautiful Belgrade, Montana, outdoor adventures surround us. There’s no better place to live than Big Sky Country. Together, we build and play in Montana.
What You'll Do
- 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
- 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, including cost drivers, constructability, and installation methods
- 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
- Strong leadership presence with experience mentoring estimators and influencing team standards and performance
At Williams, we take care of our team with competitive benefits, growth opportunities, and a culture that values work-life balance. Here’s what you can expect:
- Competitive Wage
- Comprehensive Health Coverage
- Medical Insurance: Choose from 3 affordable plans (including HSA and FSA options)
- HSA Employer Contribution: $600 for individuals, $1,200 for families (HDHP HSA plan)
- Telemedicine
- Dental & Vision Insurance
- Financial & Retirement Support
- 401(k) Employer Match: Up to 8% (based on company profitability)
- Company-Paid Life Insurance
- Voluntary Accident, Short-Term, and Long-Term Disability Insurance
- Time Off & Work-Life Balance
- Paid Time Off (PTO)
- 6 Paid Holidays
- Employee Assistance Program (EAP): Confidential support for mental health, financial planning, legal guidance, and more
- Growth & Development
- Williams Academy: In-person training, 60 online courses, and ongoing professional development
- Referral Bonuses: Get rewarded for bringing great people on board
- Extra Perks & Fun
- Pet Insurance
- Company Events: Archery Tournament, Golf Tournament & more!
- Perks include discounted gym memberships and savings on dog daycare and boarding
- Live & Work in the "Last Best Place": Enjoy the beauty and adventure of Montana!