Senior Mechanical Estimator (Mining) | Multi-Discipline

Loenbro; Phoenix (AZ); On-site; USD 110,000 - 150,000; Full time

Job summary

Loenbro, LLC is seeking a Senior Mechanical Estimator (Mining) to develop accurate cost estimates across structural, piping, mechanical equipment, civil earthwork, foundations, and electrical scopes for mining and heavy industrial projects in Gilbert, AZ. You will work closely with Precon SMEs and cross-functional teams to craft competitive bids.

The ideal candidate combines strong technical craft knowledge with commercial acumen, reads complex drawings, and builds relationships with clients,

Qualifications

• 5+ years estimating experience in industrial or mining construction.
• Ability to read and interpret civil, structural, mechanical, and piping drawings and specifications.
• Proficiency with HCSS HeavyBid estimating software or comparable platform.
• Proficiency with Microsoft Project and strong Excel skills.
• Working knowledge of MSHA regulations and mining site safety requirements.
• Strong written and verbal communication skills; ability to present estimates clearly.
• Valid driver's license and ability to travel to mine sites.

Responsibilities

• Prepare detailed quantity takeoffs and cost estimates for structural steel fabrication and erection, piping, mechanical equipment setting, civil earthwork, concrete, and electrical scopes when applicable.
• Analyze RFPs, RFIs, drawings, specifications, and scopes of work to identify cost drivers and risks.
• Develop labor hour estimates using historical production rates and established databases.
• Solicit, evaluate, and level subcontractor and vendor quotes for scopes outside self-perform capability.
• Build and maintain HeavyBid estimate templates, unit cost databases, and cost coding structures.
• Structure estimates so labor hours, crew makeup, quantities, and production rates can be exported for CPM scheduling.
• Compile complete bid packages and coordinate with Operations, Project Executives, and Safety to validate assumptions and constructability.
• Attend site walks, pre-bid meetings, and client interviews to gather scope clarity and build relationships.
• Coordinate with Engineering on redlines and constructability feedback.
• Track win/loss outcomes and capture lessons learned for future bids.

Skills

Estimating experience

Read drawings

HCSS HeavyBid

Microsoft Project

MS Excel

MSHA regulations

Travel

Communication

Education

Degree in Construction Management/Engineering

Tools

HeavyBid

Microsoft Project

Job description

Loenbro, LLC is seeking a Senior Mechanical Estimator (Mining) to develop accurate cost estimates across structural, piping, mechanical equipment, civil earthwork, foundations, and electrical scopes for mining and heavy industrial projects in Gilbert, AZ. You will work closely with Precon SMEs and cross-functional teams to craft competitive bids.

The ideal candidate combines strong technical craft knowledge with commercial acumen, reads complex drawings, and builds relationships with clients,