Office Manager

Epicosity LLC; Sioux Falls (SD); On-site; USD 52,000 - 63,000; Full time

Job summary

Epicosity LLC, a full-service advertising agency in Sioux Falls, SD, seeks an organized Office Manager to keep daily operations running smoothly for clients and staff alike. The role emphasizes front-desk excellence, finance support, and vendor coordination.

You will help maintain office culture, organize events, and coordinate travel for staff as needed. Strong attention to detail and a proactive, people-first approach are essential for success at Epicosity.

Qualifications

• Experience coordinating front-desk or office operations
• Solid understanding of basic accounting/billings tasks
• Strong communication and time-management abilities

Responsibilities

• Greet guests and manage the front-desk experience for clients and staff
• Oversee accounts payable, invoices, vendor statements, and timely payments
• Coordinate office operations, supplies, facility needs, and vendor relationships
• Plan and coordinate office culture events and team activities

Skills

Organizational skills

Attention to detail

People-oriented

Job description

At Epicosity, we're a full-service advertising agency that guides our clients and staff on a journey to awaken their inner champion. Our work spans branding, digital, web, video, and media — and it's earned recognition locally, regionally, and nationally. We've also been recognized as one of the Midwest's best places to work by Prairie Business Magazine. That culture doesn't happen by accident, and the right Office Manager plays a big part in keeping it thriving.

We're looking for an organized, detail-obsessed, people-first Office Manager who takes pride in keeping things running smoothly — and who genuinely loves being the person everyone can count on.

What You'll Do:

Client & Guest Experience

• Be the first face and voice of Epicosity — greeting guests and callers with warmth, professionalism, and energy
• Never miss an opportunity to excite and delight clients

Finance & Billing

• Manage accounts payable end-to-end: reviewing invoices, maintaining documentation, reconciling vendor statements, and distributing checks
• Process monthly client invoices and manage timely collection of outstanding receivables
• Handle 1099/W-9 maintenance, vendor inquiries, and billing issue resolution
• Support the CEO and VP of Finance with accurate, timely financial tasks

Office Operations

• Oversee office supply inventory and manage relationships with environmentally responsible, cost-effective vendors
• Keep the office organized, tidy, and running like clockwork
• Coordinate with vendors for cleaning, technology, trash, and other facility needs
• Sort and distribute mail; prepare US, UPS, and FedEx shipments as needed
• Manage employee travel arrangements and coordinate tradeshow logistics
• Maintain organized, clearly labeled filing systems in accordance with agency processes

Culture & Events

• Plan and coordinate office culture events that bring the team together and reinforce Epicosity's intentionally positive workplace
• Champion the employee experience by organizing celebrations, team activities, and internal initiatives that make Epicosity a great place to work