Estimator

Mangrum Career Solutions LLC
Rancho Cucamonga, CA

Estimator – Underground Wet Utilities Construction

About the Company

We are a privately held, first-rate heavy civil contractor with a strong track record of growth. Our work spans some of the most complex infrastructure in the country, including:

  • Underground Utilities: Gas, Water, Sewer, Fiber Optic, Electrical

  • Structures & Civil: Foundations, Bridges, Highways, Airports, Sitework

  • Power & Utilities: Substations, Power Plants, Transmission & Distribution

  • Emergency Management: Storm response, shoreline stabilization, debris removal

  • Renewables: Solar installation and construction management

We are a nationally recognized industry leader , ranked among the ENR Top 400 Contractors , known for disciplined execution, strong planning, and a relentless focus on safety.

Position Overview

The Estimator is responsible for the accurate and timely preparation of cost estimates for major infrastructure and utility projects. This role requires deep knowledge of construction means and methods, cost structures, and engineering principles , with a strong ability to evaluate risk and competitiveness in high-value bids.

You will play a critical role in supporting bids for major utility clients across Southern California and partnering closely with project management and operations teams.

Key Responsibilities

  • Lead estimating efforts for major utility and infrastructure projects in Southern California.

  • Determine accurate labor, equipment, and material costs .

  • Perform detailed quantity takeoffs and pricing analysis.

  • Solicit and evaluate vendor and subcontractor quotes .

  • Review bid documents and assess project risks and logistics .

  • Analyze competitive bids from subcontractors and suppliers.

  • Review estimates and pricing strategies with the Project Management team .

  • Prepare estimates at various stages of completion.

  • Support post-bid buyouts and pre-construction activities.

  • Participate in pre-construction meetings with clients, owners, subcontractors, and engineers.

  • Perform additional estimating and support duties as required.

Qualifications

  • Bachelor’s degree in Civil Engineering or Construction Management .

  • Strong experience in underground utilities and heavy civil construction .

  • Public works experience is a plus.

  • Proficiency with estimating software ; HeavyBid experience strongly preferred.

  • Advanced skills in MS Office .

  • Experience with on-screen takeoff tools such as Bluebeam or PlanSwift .

  • Strong understanding of construction costs, scheduling, and engineering principles .

  • Familiarity with horizontal and infrastructure projects .

  • Highly organized, detail-oriented, and adaptable in fast-changing environments.

  • Proven ability to prioritize workload and meet deadlines consistently.

  • Excellent written and verbal communication skills.

Why Join Us

You’ll be part of a top-tier heavy civil organization with the scale, stability, and reputation to support long-term career growth. This is not a small-job estimating role. You’ll be working on major infrastructure programs , influencing bid strategy, and partnering with experienced leadership on projects that shape communities.

Compensation & Benefits

We offer a strong total rewards package, including:

  • Medical, Dental, and Vision Insurance

  • Health Savings Account (HSA)

  • 8 Paid Holidays

  • Paid Time Off

  • 401(k) with Company Match

Posted 2026-01-15

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