Administrative Assistant

Administrative Assistant at Wanzek Construction, Inc., a Mas Tec Company

This is a full-time position located in our Fargo, ND office.

Responsible for performing a variety of administrative functions supporting all levels of management. Tasks require a significant level of trust and self-discipline/confidential discretion.

Mas Tec Renewables, comprised of Wanzek Construction, IEA Constructors, and White Construction, combines over 20 years of experience in renewable energy construction. Depending on your position and project, you may work for one or more of our companies over your career with us. Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in Power, #17 Top 50 Domestic Heavy Contractors, #20 Transportation Contractor).

We embrace diverse perspectives among our employees and across all levels of our business, including our suppliers, community partners, and clients. We have built a multidimensional workforce that brings valuable differences in perspectives, work ethics, and approaches to our organization. By collaborating across departments, we foster innovation and encourage everyone—from interns to executives—to share their ideas and make an impact.

Our goal is to create a respectful work environment where all employees feel valued, included, and empowered to become innovative leaders in our industry. The Mas Tec Renewables market sector is part of the Mas Tec Clean Energy & Infrastructure business segment. Mas Tec’s Clean Energy & Infrastructure (CE&I) segment generates over $4 billion in annual revenue, providing construction services across industrial, renewables and infrastructure sectors.

Our renewables sector focuses on solar, wind and battery storage. Sustainability and safety are foundational to our culture and influence everything we do. Mas Tec, a minority‑owned Fortune 500 company, has shaped the construction industry for more than 90 years. With over 35,000 employees and 400 offices nationwide, we provide flexibility and career growth in dynamic work environments.

• Provide excellent customer service to both internal and external clients
• Communicate messages to the appropriate parties in a timely manner
• Manage SharePoint and Outlook calendars for designated leaders
• May support with data entry in various systems (i.e. Salesforce)
• Support with verification of data accuracy in various systems
• Complete Monthly Expense Reports for designated leaders
• Know where/how to locate all personnel in the office/shop/field
• May address and ship project plans and documents
• Order, copy and return plans
• Use UPS Online World Ship, Fed Ex and other carriers if necessary to send out all packages
• Assist with special projects as needed or requested from HR, AP, PM’s, etc.
• Maintain inventory and order office supplies, equipment and the Company forms
• Type memos, correspondence, reports and other documents
• Other administrative duties as assigned in order to support Renewables Operations
• May assist in sending out holiday gift cards and gifts
• May coordinate offsite meetings
• Assist in site signage coordination
• Assist in assessment and maintenance of memberships and associations
• May assist with various committees (Belief Builders, United Way, etc.)
• Back‑up in assisting Executive team as needed
• May create and maintain distribution lists
• Assist in travel arrangements for employees
• Assist in creation and management of organizational charts
• May assist in coverage for Office Coordinator as needed
• Other duties as assigned

• Associate’s degree or equivalent preferred
• Minimum of 2 years of experience in office support or administrative roles

• Take reasonable care of your own and others’ health and safety and of those who may be affected by the day-to-day delivery of this role by taking personal responsibility for working toward the company’s Zero Injury principles
• Proficiency in Microsoft Office Suite (Word, Excel, Outlook, PowerPoint, SharePoint, Teams, etc.) required
• Ability to meet deadlines
• Strong organization and multitasking skills to manage various…