Project Administrative Assistant

Mortenson is seeking a detail-oriented Project Administrative Assistant to support a dynamic project site in DeKalb, Illinois. This field-based role requires full-time onsite presence and the ability to interact with staff at all levels while maintaining flexibility, professionalism, and confidentiality.

Responsibilities

• Perform clerical tasks and operate basic office equipment
• Handle incoming calls, route to appropriate parties, and take messages
• File and maintain written records; create electronic copies for documentation
• Receive, sort, and log all deliveries into the computer database
• Prepare daily outbound deliveries
• Prepare materials for design and construction meetings
• Record and update meeting minutes for site meetings
• Procure consumable materials and office supplies
• Support Superintendent with equipment inventory tracking and organization
• Assist with entry of craft worker timecards
• Provide general support to the project team for day-to-day tasks
• Schedule, track, and log repairs and maintenance for work trucks
• Provide maps and directions to visitors, subcontractors, deliveries, or new employees
• Log all applicants into the Craft Applicant Tracking Spreadsheet

Requirements

• Associate’s degree in business or related administrative experience preferred
• Minimum of 3 years administrative experience, preferably supporting large teams
• Proficiency in Microsoft Office (Excel, Outlook, PowerPoint) and basic office equipment
• Strong written and verbal communication skills
• Highly organized with the ability to work independently or with minimal supervision
• Must be legally authorized to work in the U.S. without sponsorship (e.g., H1B, TN, etc.)

Benefits

• Medical and prescription drug plans with no-cost vision coverage
• Dental plan
• 401k retirement plan with employer match
• Paid time off, holidays, and other paid leaves
• Employer-paid life, AD&D, and disability insurance
• No-cost mental health tool and concierge with work-life resources
• Tuition reimbursement
• Adoption assistance
• Gym membership discount program

Pay

The base pay range for this role is $24.52 - $33.12 hourly. Actual pay may be higher in select locations: Denver, CO and Chicago, IL (+5%), Seattle, WA and Portland, OR (+10%), Washington, D.C. (+12.5%). Pay is determined based on knowledge, skills, experience, and internal equity.

About the Company

Mortenson is a top builder, developer, and EPC (Engineering, Procurement, and Construction) firm with expertise in markets such as sports, renewable energy, data centers, and healthcare. We focus on creating a built environment with lasting positive impact.