Assistant Project Manager

Company: East River Contracting
Location: Watertown
Posted on: February 18, 2026

Job Description:

Job Description Job Description East River Contracting is seeking a driven and detail-oriented Assistant Project Manager to support our Concrete and Framing Project Managers. This role is perfect for someone who thrives in a fast-paced construction environment and enjoys keeping projects organized, moving forward, and running smoothly from the office to the field. You’ll play a key role in coordinating documentation, tracking costs, supporting project logistics, and serving as a communication bridge between project managers, accounting, and vendors. Key Responsibilities Report directly to Project Managers and provide daily project support Manage submittals, RFIs, and project documentation Create and track Purchase Orders (POs) and Change Orders (COs) Approve credit card purchases and invoices Order concrete and coordinate material deliveries Handle permitting, licenses, and TERO paperwork Book hotels and travel accommodations for field staff Upload and distribute current plans and drawings to Procore Qualifications Strong organizational and communication skills Experience with construction workflows and documentation (concrete/framing preferred) Proficiency in Google Workspace and office software Detail-oriented with strong follow-through Ability to manage multiple priorities in a fast-paced environment Bilingual (Spanish/English) a plus What We Offer Competitive salary: $55,000–$70,000/year Growth opportunities within a growing construction company Collaborative and supportive team environment Benefits after 90 days: Health Insurance Reimbursement (up to $150/month) SIMPLE IRA wiht upt to 3% company match Performance-based raises Additional benefits discussed during the interview hc219956

Keywords: East River Contracting, Sioux Falls , Assistant Project Manager, Administration, Clerical , Watertown, South Dakota