Demo

Assistant Project Manager, Heavy Civil Construction

Onyx Corporation
Acton, MA Full Time
POSTED ON 4/8/2026
AVAILABLE BEFORE 10/3/2026

Job description:

ONYX CORPORATION, a family owned and operated company for 30 years, is hiring for a full-time Assistant Project Manager to join our growing team. Onyx is an established and well-known staple in the surrounding communities that has gained our excellent reputation based solely on word of mouth and referrals from clients, architects, engineers and builders. Our work involves large scale public site work projects, high end residential landscape, and a sand & gravel operation.


ASSISTANT PROJECT MANAGER

JOB DESCRIPTION

Job Summary:

To assist project managers in organizing and coordinating the project. On each project this is expected in order to complete the work safely, on schedule, within budget, and to the quality of workmanship specified.

Duties/Responsibi lit ies:

Assist Project Manager with all aspects of assigned projects, having a full understanding of the scope of work, budget, and project schedule.

  • Assist with obtaining pricing from vendors and subcontractors, ensure orders are to spec and within budget.
  • Assist with the preparation of submittal packages and buyout for projects, ensure materials are ordered to meet schedule milestones.
  • Prepare and maintain Request for Information (RFI) orders regarding design details.
  • Maintain B2W Track for additions to work items and quantity claiming.
  • Review and cost code vendor and subcontractor invoices.
  • Assist with developing/negotiation/submitting pay requisitions for projects.
  • Job cost, project management, and scheduling software systems used daily.

Required Skills/Abili t ies:

  • Comfortable working in a team environment
  • Must be comfortable communicating with all levels of Management,

Owners/Architects/Design Engineers, Site Foreman, Laborers & Operators.

  • Knowledge of construction procedures, equipment operation, and current OSHA safety standards
  • Ability to read drawings, plans and engineering specifications.
  • Excellent organizational, time management, and communication skills
  • Proficient in Microsoft Excel
  • Experience with Bluebeam or similar PDF viewer/editing software is preferred.

Education and Experience:

  • A minimum of 2 years construction industry experience.
  • Construction Management degree preferred.
  • OSHA 10 certification
  • Valid driver’s license

Physical Requirements:

  • Prolonged periods sitting at a desk and working on a computer.
  • Must be able to work in all types of weather, including extremely hot and extremely cold temperatures.
  • Must be able to lift and move up to 50 pounds.

Job Type: Full-time


Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Disability insurance
  • Health insurance
  • Life insurance
  • Paid time off
  • Parental leave
  • Vision insurance

Compensation Package:

  • Weekly pay

Work Location: In person

Salary.com Estimation for Assistant Project Manager, Heavy Civil Construction in Acton, MA
$65,860 to $82,315
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