Administrative Assistant

** About Us*
* Three Rivers Management, Inc. (TRMI) is a subsidiary of Heidelberg Materials North America, one of the world's largest suppliers of building materials. Heidelberg Materials North America operates over 450 locations across the U.S. and Canada with approximately 9,000 employees. TRMI manages, among other things, the historical asbestos liabilities, and environmental liabilities at RCRA, CERCLA, and state-regulated sites nationwide associated with the discontinued manufacturing operations of various subsidiaries of Heidelberg Materials.

** What You'll Be Doing*
* + Prepare and process purchase requisitions, purchase orders, and expense reports.

+ Maintain accurate records in electronic systems and manage document storage.

+ Coordinate meetings, logistics, and presentation materials in standard company format.

+ Handle confidential information and ensure timely communication across teams.

+ Support office operations, including mail distribution, supply management, and vendor coordination.

** What Are We Looking For*
* + High school diploma required; post‑secondary education a plus.

+ Minimum of 5 years of administrative support experience in a professional setting preferred.

+ Advanced proficiency in Microsoft Office Suite (Outlook, Word, Excel, PowerPoint), with knowledge and experience using Microsoft Copilot a plus.

+ Knowledge and experience with business applications such as OnBase, SAP, Ariba, and Concur is preferred but not required.

+ Ability to adapt to changing priorities and work independently while maintaining confidentiality.

+ Current Pennsylvania Notary license is preferred but not required; however, it should be obtained within 3-6 months of hire.

** Work Environment*
* TRMI's office is located in Pittsburgh, PA, with in-office, in-person work expected 2 to 3 days per week and flexible remote/hybrid work options available for the non-office days. This role operates in a professional office setting with routine use of standard office equipment. Occasional overtime may be required.

** What We Offer*
* + Salary: $51,580.00 - $60-500.00

+ 401(k) retirement savings plan with an automatic company contribution as well as matching contributions

+ Highly competitive benefits programs, including:

+ Medical, Dental, and Vision along with Prescription Drug Benefits

+ Health Savings Account (HSA), Health Reimbursement Account (HRA) and Flexible Spending Account (FSA)

+ AD&D, Short- and Long-Term Disability Coverage as well as Basic Life Insurance

+ Paid Bonding Leave, 15 days of Paid Vacation, 40 hours of Paid Sick Leave and 10 Paid Holidays

Equal Opportunity Employer - Minority / Female / Veteran / Disabled

** Req
** JR

As part of our hiring process, we may use AI-assisted tools to support the screening and evaluation of candidate applications and interviews. These tools help streamline the initial assessment, but all decisions about candidate advancement are made by human recruiters and hiring managers. While technology supports early steps, every interview will be handled by experienced recruiters and hiring managers to provide a personal touch.