Administrative Assistant

Administrative Assistant at Momentum Project Management

At Infinity, energy isn’t just encouraged—it’s expected. We live by Energy, Excellence, and Execution
, and we deliver Life-Changing Experiences for our employees every single day.

Recognized by the Detroit Free Press
, Des Moines Register
, and Corridor Business Journal
, Infinity is a multiple-time recipient of Top Workplaces and Coolest Places to Work awards. These honors reflect what our team already knows: when high performers are supported, recognized, and challenged, incredible things happen.

From a casual dress code and a vibrant break room to team events and community impact initiatives, Infinity is a place where performance meets purpose—and where people actually enjoy showing up.

At Infinity, we invest in people who want to grow, win, and build something meaningful:

• Competitive hourly base pay + commission
• Paid Time Off (vacation, personal, sick) plus 7 paid holidays
• 401(k) with company match after 6 months — 100% vested immediately
• Best-in-class Blue Cross Blue Shield health benefits for full-time employees
• Clear career pathing & internal promotions — we promote from within
• Award-winning training program starting Day 1
• A strong 10X performance culture, with certification for every team member

Infinity is seeking a high-energy Administrative Assistant who thrives in a fast-paced, performance-driven environment. This role is a critical hub of our office—combining administrative support, front-desk presence, and facilities coordination. You’ll be the first impression for guests, a trusted resource for employees, and a proactive partner in keeping the workplace organized, efficient, and ready to perform at a high level every day.

• Serve as the first point of contact for guests, vendors, and incoming calls
• Provide administrative support across leadership and departments
• Schedule meetings, manage conference rooms, and assist with travel coordination
• Receive, sort, and distribute mail and deliveries
• Manage office supply inventory and place orders proactively
  
  Partner with vendors and building management on facilities needs
• Support onboarding by preparing work spaces and welcome materials
• Help plan and execute company events, celebrations, and engagement activities
• Keep front desk, breakroom, and shared spaces organized, stocked, and guest-ready
• Take on additional administrative or facilities projects as needed

You’re organized, upbeat, and take pride in being the person others can rely on. You bring structure to chaos, warmth to every interaction, and ownership to everything you do.

• 2+ years in an administrative, receptionist, or office support role
• Strong written and verbal communication skills
• A friendly, professional, service-oriented mindset
• Excellent organizational and multitasking abilities
• Proficiency in Microsoft Office (Outlook, Word, Excel, Teams)
• Experience working with vendors or managing office supplies (preferred)
• A self-starter mentality and comfort in a fast-moving environment
• The discretion to handle confidential information with integrity

• Ability to sit and work at a computer for extended periods
• Ability to lift up to 25 pounds (supplies, packages, event setup)

If you’re looking for more than just a job—and want to be part of a culture that values accountability, growth, and results—Infinity is the place for you.