Description
Job Title: Senior Mechanical Estimator
Company: Loenbro, LLC
Business Unit/Department: Estimating
Location: Gilbert, Arizona
Reports to: Pre-Construction Manager
Employment Type: Full-Time
FLSA Classification: Exempt
About Loenbro
Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S. Our market spans all industries and our service offerings include Critical Electrical, Mechanical & Structural, Soft Crafts, Inspection, Underground Maintenance and Installation, and Fabrication. Our expertise lies in simplifying the complex and establishing long-standing relationships with our partners. We have a national presence but a local approach—every customer benefits from our capabilities and our care.
At Loenbro, we don’t just offer jobs—we build careers grounded in integrity, teamwork, excellence, and purpose. Join a team where your expertise is valued, your growth is supported, and your work helps maintain and enhance the critical infrastructure that powers communities across the nation.
Job Summary
The Senior Mechanical Estimator is a key leader within the Estimating team, responsible for developing accurate, competitive, and comprehensive cost estimates for multi-discipline construction and industrial services projects supporting mining and heavy industrial clients. This role requires the ability to estimate across multiple service lines Structural Fabrication & Erection, Piping, Mechanical Equipment Setting, Civil Earthwork & Concrete, and (as a plus) Electrical and to synthesize those disciplines into cohesive, winning proposals.
The ideal candidate combines strong technical and craft knowledge with commercial acumen, is comfortable reading complex drawings and specifications across trades, and can build relationships with clients, engineers, and subcontractors throughout the pursuit and proposal process. Works with Precon SME Estimators to collaborate an all inclusive bid when needing assistance.
Essential Job Responsibilities
Estimating & Takeoffs
- Prepare detailed quantity takeoffs and cost estimates for structural steel fabrication and erection, process and utility piping, mechanical equipment setting and rigging, civil earthwork, concrete (foundations, slabs, structures), and electrical scopes when applicable.
- Analyze RFPs, RFIs, drawings, specifications, and scopes of work to identify all cost-driving elements and potential risks.
- Develop labor hour estimates using historical production rates, craft labor agreements, and established estimating databases.
- Solicit, evaluate, and level subcontractor and vendor quotes for scopes outside self-perform capability.
- Build and maintain HeavyBid estimate templates, unit cost databases, activity and cost coding structures, and historical production data across all service lines.
- Structure estimates so labor hours, crew makeup, quantities, and production rates can be cleanly exported and handed off to the Scheduling Department for CPM schedule development.
Proposal Development
- Compile complete, well-organized bid packages including cost narratives, schedules, exclusions and clarifications, and commercial terms.
- Coordinate with Operations, Project Executives, and Safety to validate assumptions, means and methods, and constructability.
- Support development of project execution plans, staffing plans, and schedule logic (5x10, 5x12, or other workweek models) as needed for client evaluation.
- Partner with the Scheduling Department to deliver estimate-driven inputs for Microsoft Project schedules, and validate that the resulting schedule aligns with estimated durations, manpower loading, and equipment utilization.
- Participate in bid strategy sessions and pricing reviews with leadership.
Client & Site Engagement
- Attend site walks, pre-bid meetings, and client interviews to gather scope clarity and build relationships.
- Respond to client RFIs during the bid period with technical and commercial input.
- Support post-award transition, providing estimate handoff and scope clarification to the project ops team.
Cross-Functional Collaboration
- Work closely with the Sales and Business Development team to align pursuits with pipeline strategy and account priorities.
- Coordinate with Engineering (internal or client-side) on redlines, design clarifications, and constructability feedback.
- Track win/loss outcomes and incorporate lessons learned into future estimates.
REQUIRED QUALIFICATIONS
- 5+ years of estimating experience in industrial or mining construction, with demonstrated exposure to at least two of the core service lines (Structural, Piping, Mechanical Equipment Setting, Civil/Concrete).
- Strong ability to read and interpret civil, structural, mechanical, and piping drawings and specifications.
- Proficiency with HCSS HeavyBid estimating software, or demonstrated ability to transition quickly from a comparable platform, along with advanced Microsoft Excel skills.
- Proficiency with Microsoft Project, or the ability to structure and export estimate data — activity coding, labor hours, crew composition, quantities, and durations — in a format the Scheduling Department can use to build an accurate CPM schedule.
- Working knowledge of MSHA regulations and mining site safety requirements.
- Strong written and verbal communication skills, with the ability to present estimates clearly to internal and client stakeholders.
- Valid driver's license and ability to travel to mine sites and client facilities as needed.
PREFERRED QUALIFICATIONS
Similar jobs
Est. 120,000 USD
About Loenbro Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S. Our market spans all industries and our service offerings include Critical Electrical, Mechanical &am…
Est. 95,000 USD
About Loenbro Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S. Our market spans all industries and our service offerings include Critical Electrical, Mechanical &am…
Est. 95,000 USD
About Loenbro Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S. Our market spans all industries and our service offerings include Critical Electrical, Mechanical &am…
Est. 95,000 USD
Job Title: Senior Commercial Electrical Estimator Company: Loenbro, LLC Business Unit/Department: Estimating Location: Centennial, COReports to: Chief Estimator Employment Type: Full-Time FLSA Classification: Exempt Abou…
Est. 95,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Field LeaderLocation: PhoenixReports to: VP, Mission Critical SouthwestEmployment Type: Full TimeFLSA Classification: Non-Exempt About Loe…
Est. 115,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Management Location: Turkey, TX / On-site Reports to: VP of Field OperationsEmployment Type: Full-Time FLSA Classification: About Loenbro…
Est. 115,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Management Location: Temple, TX / On-site Reports to: VP of Field OperationsEmployment Type: Full-Time FLSA Classification: About Loenbro…
Est. 115,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Management Location: Boise, ID / On-site Reports to: Service Line Manager Employment Type: Full-Time FLSA Classification: Exempt About Loe…
Est. 120,000 USD
Job Summary Loenbro is seeking an experienced Electrical/Mining Superintendent to lead electrical construction and maintenance activities across mining and heavy industrial projects. This position is responsible for over…
Est. 95,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Field LeaderLocation: TexasReports to: VP of Field OperationsEmployment Type: Full TimeFLSA Classification: Non-Exempt About Loenbro Loenb…
Est. 115,000 USD
Job Title: General Superintendent Company: Loenbro, LLC Business Unit/Department: Management Location: Afton, TX / On-site Reports to: Employment Type: Full-Time FLSA Classification: About Loenbro Loenbro is a trusted, l…
Est. 115,000 USD
Job Title: Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Centennial, CO On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt At Loenbr…
Est. 95,000 USD
About Loenbro Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S. Our service offerings include Critical Electrical, Mechanical & Structural, Soft Crafts, Inspecti…
Est. 110,000 USD
Job Title: Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Dallas, TX On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt At Loenbro, w…
Est. 85,000 USD
Job Title: Assistant Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Dallas, TX On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt At…
Est. 85,000 USD
Job Title: Assistant Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Phoenix, AZ On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt At…
Est. 115,000 USD
Job Title: Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Phoenix, AZ On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt At Loenbro,…
Est. 85,000 USD
Job Title: Assistant Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Centennial, CO On-siteReports to: Regional ManagerEmployment Type: Full-TimeFLSA Classification: Non-Exempt…
Est. 115,000 USD
Loenbro is seeking a Project Manager for our Structural/Mechanical Division. The successful candidate will oversee all aspects of our structural and mechanical projects, from initial scope to final completion, ensuring t…
Est. 95,000 USD
Job Title: Electrical Superintendent Company: Loenbro, LLC Business Unit/Department: Management Location: Boise, ID / On-site Reports to: Service Line Manager Employment Type: Full-Time FLSA Classification: Exempt About…
Est. 115,000 USD
Job Title: Senior Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Phoenix, AZ / On-SiteReports to: Regional ManagerEmployment Type: Full TimeFLSA Classification: Non-Exempt At…
Est. 115,000 USD
Job Title: Senior Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Centennial, CO / On-SiteReports to: Regional ManagerEmployment Type: Full TimeFLSA Classification: Non-Exempt…
Est. 120,000 USD
Job Title: Senior Project Manager Company: Loenbro, LLCBusiness Unit/Department: Project Management Location: Dallas, TX / On-SiteReports to: Regional ManagerEmployment Type: Full TimeFLSA Classification: Non-Exempt At L…
Est. 72,250 USD
Are you driven to grow, lead, and make a meaningful impact? At Apex, we’re building more than a consulting and engineering firm—we’re creating a place where your career accelerates, your contributions matter, and your po…
Est. 65,000 USD
Job Title: Quality Document Control Company: Loenbro, LLC Business Unit/Department: Quality Control Location: Westminster, CO / On-site Reports to: Director of Quality Employment Type: Full-Time FLSA Classification: Exem…
Est. 72,250 USD
Are you driven to grow, lead, and make a meaningful impact? At Apex, we’re building more than a consulting and engineering firm—we’re creating a place where your career accelerates, your contributions matter, and your po…
Est. 125,000 USD
At Zone 5 Technologies, we're redefining what's possible in unmanned aircraft systems. Our team of engineers and innovators is developing cutting-edge autonomous solutions that push the boundaries of UAS technology - sol…
Est. 62,400 USD
Job Title: Electrical Service Technician Company: Loenbro, LLC Business Unit/Department: Commercial/Industrial Location: Houston, TX Reports to: Area Manager Employment Type: Full-Time FLSA Classification: N-Non-Exempt A…
Est. 110,000 USD
Job Title: Electrical Superintendent Company: Loenbro, LLC Business Unit/Department: Electrical Location: Colorado / On-site Reports to: Project Manager Employment Type: Full-Time FLSA Classification: Non-Exempt About Lo…
Est. 115,000 USD
Job Title: Electrical QA/QC Manager Company: Loenbro, LLC Business Unit/Department: Commercial Location: Afton, TX Reports to: Director of Quality Control Employment Type: Full-Time FLSA Classification: N-Non-Exempt Abou…