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About Core Services

Through a variety of essential positions, the teams at Core Services partner with American companies in the building industry to successfully execute commercial construction projects throughout the United States.

Our culture and model of work means that, as a Core Services team member serving these companies, you will be incorporated into the workflows of the department(s) with which you work. You will be considered an extension of these teams and offices, and part of a trustworthy team that takes care of fundamental project details.

About Core Services
Core Services - Types of roles

Types of roles at Core Services are in these departments:

  • Accounting
  • Administration
  • Constructability Review
  • Estimating
  • Executive Assistant
  • Marketing
  • Engineer Support
  • Change Management
  • Scheduling
  • VDC

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Core Services - Join our team!

About W.E. O’Neil

Core Services is a division of W.E. O’Neil Construction, an American construction company. W.E. O’Neil developed Core Services to assist and enhance its operations and is now extending these services to other exceptional firms in the building industry.

Established in 1925, W.E. O’Neil is a 100% employee-owned, nationally ranked general contractor. Through four generations of family leadership and nearly 100 years of experience, the O’Neil name has been synonymous with quality professional construction services and integrity. Headquartered in Chicago, IL, W.E. O’Neil builds across the U.S., with locations in Arizona, California, Colorado, Illinois, Tennessee, and Texas.

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