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MasTec

Infrastructure engineering and construction for energy

Estimating Intern

Proposal ManagementPosted on Nov 6
Internship · Summer 2027Rockford, IL, USA$20 - $21 /hr

About the Job

Requirements

  • Currently pursuing an undergraduate four-year degree in Civil Engineering, Construction Management, Construction Engineering, or a related field.
  • Demonstrate strong analytical and mathematical skills.
  • Be detail-oriented and able to manage multiple tasks.
  • Be proficient in Microsoft Office, particularly Excel.
  • Have an interest in commercial and industrial construction.
  • Communicate and work effectively with a team.
  • Demonstrate a strong work ethic, deadline orientation, problem-solving ability, and adaptability.

Responsibilities

  • Assist estimators in preparing cost estimates and bid proposals.
  • Review project plans, specifications, and contract documents.
  • Perform quantity takeoffs and material calculations.
  • Research subcontractors, suppliers, and pricing information.
  • Help solicit and track subcontractor and vendor bids.
  • Maintain estimating databases and project documentation.
  • Support the preconstruction team with budgeting and value engineering efforts.
  • Participate in project meetings and gain exposure to client and subcontractor interactions.

About the Company

MasTec

Infrastructure engineering and construction for energy

MasTec is a North American infrastructure engineering and construction company focused on energy, utility, and communications networks. It engineers, builds, installs, maintains, and upgrades power plants, renewable energy facilities, and related infrastructure, and helps clients with site selection, sizing, materials, and construction planning. It differentiates itself by its large workforce, end-to-end capabilities across engineering, construction, maintenance, and upgrades, and its sector focus on utilities, communications, and government clients, including natural gas and renewable energy facilities. Its goal is to deliver reliable, safe, and efficient infrastructure that supports energy delivery, connectivity, and the expansion of renewable energy capacity.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Coral Gables, FL
Founded
1929

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