Support construction billing processes, including invoice preparation, change order tracking, cost reconciliation, and maintaining accurate billing and financial records Manage union and hourly payroll, ensuring compliance with labor agreements and union bylaws Assist with maintaining and updating Sitetracker project data Assist in field requests as they come in (Lift Rentals, Equipment Rentals) Assist in the AT&T project tracking in various databases Maintain job folders in ShareFile and upload any documentation required Maintain Subcontractor Purchase Orders (POs) process Travel Arrangements Other duties as assigned Qualifications: 3–5 years of experience as an administrative assistant or office administrator High School Diploma required; Associate's or Bachelor's degree preferred Strong proficiency in MS Word, Excel, PowerPoint, and Outlook Experience with union/prevailing wage payroll and certified payroll reporting preferred Familiarity with construction billing and change order processes a plus Excellent verbal and written communication skills Highly organized and detail-oriented with the ability to manage multiple priorities Positive, can-do attitude with the ability to work independently and as part of a team The above noted job description is not intended to describe, in detail, the multitude of tasks that may be assigned but rather to give a general sense of the responsibilities and expectations of the position. Communication Technology Services, CTS, is one of the largest integrators and managed service providers for mobile networks in the U.S. The company specializes in the design, installation and support of Distributed Antenna System (DAS), Small Cell, and 4G/5G Private Wireless Networks for the mobile network operators, enterprise and venue owners and network infrastructure owners.