Office Manager

Socket.dev; Sioux Falls (SD); On-site; USD 42,000 - 56,000; Full time

Job summary

Epicosity, a full-service advertising agency in Sioux Falls, SD, is seeking an organized Office Manager to keep our fast-paced office running smoothly and support a culture-driven team.

You’ll be the first face for guests, manage finance and billing tasks, oversee office operations, and coordinate events that reinforce Epicosity’s positive workplace.

If you enjoy detail-oriented work and serving as the go-to person, this role offers growth and a vital business-support function.

Qualifications

• Associate's degree or two-year equivalent in business administration, accounting, or a related field.
• Strong data entry and general math skills.
• Exceptional organizational skills and attention to detail.

Responsibilities

• Be the first face and voice of Epicosity — greeting guests and callers with warmth, professionalism, and energy
• 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
• 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
• 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
• Associate's degree or two-year equivalent in business administration, accounting, or a related field
• Strong data entry and general math skills
• Exceptional organizational skills and attention to detail

Skills

Data entry

General math skills

Organizational skills

Attention to detail

Education

Associate degree in business

Job description

We're Hiring: Office Manager | Epicosity | Sioux Falls, SD

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

What We're Looking For:

• Associate's degree or two-year equivalent in business administration, accounting, or a related field
• Strong data entry and general math skills
• Exceptional organizational skills and attention to detail