Commercial Mechanical Estimator

Executive Overview:

AMS Mechanical Systems, Inc. is a 50 year Mechanical contracting firm serving the commercial, industrial, refrigeration and nuclear industries (PMT).

During its 50 year existence, AMS has grown from a small refrigeration contractor with a few employees to a multi-discipline and multi-market MEP contractor with more than 500 employees. This growth combined with our diversification, the increased utilization of technology and fabrication has brought many new challenges to our workflow and operating processes.

Commercial Mechanical Estimator

We have an immediate opening for an Estimator experienced in commercial / industrial mechanical projects with a background in plan and spec estimating. We are located in the western suburbs of Chicago. This is a full time position.

Roles and Responsibilities

  • Analyze drawings and specifications.
  • High attention to detail.
  • Understand contractual terms and conditions.
  • Issue intelligent and perceptive RFIs.
  • Performs quantity take-offs for piping systems and mechanical equipment for industrial piping and mechanical systems.
  • Assemble accurate and well organized estimates in a timely manner.
  • Organize sub‐contractor and vendor quotations, and insure quotes meet contract documents.
  • Maintain relationships with sub‐contractors and clients.
  • Prepares, coordinates, and evaluates subcontractor bid packages.
  • Assemble material and labor costing information for the company historical database.
  • Formulate cost break down from estimates for project managers pre-construction budgeting.
  • Attend pre-bid walk-thru’s periodically.
  • Work with other company estimators assembling multi trade proposals.

Qualifications and Experience

  • Previous experience estimating commercial projects.
  • Computer estimating software experience. QuickPen AutoBid experience preferred.
  • Experience with plumbing and HVAC take off a plus.
  • Proficient with Microsoft Office Software (i.e. Word, Excel, Project).
  • Exceptional communication skills.
  • Strong math and analytical skills.
  • Ability to read and interpret drawings and specifications. Knowledge of Piping Plan, Isometric and detail drawings.
  • Graduate from recognized engineering or construction management program is an asset.
  • Mix of field and office experience will be helpful.
  • Minimum 3 years experience working in the construction field in similar or related position.


  • We are an employee owned company (ESOP)
  • Competitive salary
  • Health/Dental/Vision/Aflac insurance
  • Annual bonus based on performance
  • 401k

No relocation expenses will be offered.

We are an equal opportunity employer!

What We Offer

AMS Mechanical Systems, Inc., is an Equal Opportunity Employer

Continuing education incentives

Medical/dental/vision insurance

Life and accidental death insurance

Long-term disability insurance

401k/profit sharing

Paid vacation time and holidays