Office Administrator & Accounting Support

About 3rd Millennium Classrooms 3rd Millennium Classrooms is on a mission to change behavior through education. Since 1999, we have partnered with higher education institutions, court systems, secondary school districts, and organizations nationwide to deliver engaging, evidence-based courses that make a real difference. When you join our team, you’re not just selling a product — you’re helping people change their lives. Our culture is: Innovative — forward-thinking, agile, and unafraid to take smart risks that drive meaningful impact. Team-oriented — drama-free, respectful, and accountable; we collaborate across teams to make things right and deliver results. Tenacious — persistent and determined, we approach challenges with resilience and a growth mindset. Ethical and emotionally intelligent — we act with honesty, empathy, and professionalism in every interaction. About the role We’re looking for a highly organized, proactive, and detail-oriented Office Administrator to support day-to-day operations and help keep our team running efficiently. This role is ideal for someone who enjoys administrative responsibilities with light accounting functions, thrives in a fast-paced environment, and takes pride in accuracy, organization, and follow-through. As an Office Administrator at 3rd Mil, you’ll play a key role in office operations, customer support, and accounting billing/receiving processes. You’ll serve as a central point of coordination for Help Desk support and internal operations, working closely with teams across the company to support a well-organized, productive workplace. What you’ll do Answer incoming Help Desk support calls and ensure timely assistance Expedite resolution of support requests through JIRA to maximize customer satisfaction Identify patterns or recurring issues and proactively alert technical staff Share insights from frontline support with internal teams to improve processes Support Client Success with kit assembly and shipping as needed Manage office inventory, including mailing, print, and conference supplies Coordinate conference logistics and preparation Handle shipping and deliveries (USPS, UPS, FedEx, etc.) Run errands and provide general support to the physical office team Process and deposit checks; assist with invoice payments Investigate and resolve customer chargebacks Maintain office cleanliness and coordinate cleaning/maintenance services Plan and organize team events, outings, and celebrations Manage digital systems including HubSpot basics and Vonage phone system Maintain shared calendars and organize paper/digital files Support cross-functional teams by taking on additional tasks as needed Continuously improve through feedback and professional development What you’ll bring Understanding of A/R and A/P processes Experience with Google Workspace and Microsoft Office tools Excellent organizational, prioritization, and time management skills Strong communication skills (verbal and written) Attention to detail and strong proofreading ability Ability to multitask and manage competing priorities effectively Comfort working independently in a fast-paced environment Proactive, problem-solving mindset Ability to quickly learn new systems and technologies Openness to feedback and a growth-oriented attitude Performance Expectations Answer Help Desk calls promptly and return voicemails within one hour Respond to or reassign all JIRA tickets within one hour Escalate critical issues to the appropriate team members quickly Maintain adequate office and mailing supply levels at all times Process mail, shipments, and deposits daily Ensure office cleanliness and coordinate maintenance as needed Successfully plan and execute team events and office activities Contribute to process improvements through proactive communication Dedicate at least 5 hours per month to professional development Benefits Health, dental, and vision insurance Health savings account (HSA) with company match 401(k) with company match Long-term Disability insurance Paid time off and holidays Opportunities for professional growth and advancement Ready to make an impact? Apply today and help us make an impact nationwide through meaningful, behavior-changing education. #J-18808-Ljbffr