What are the responsibilities and job description for the Accounting Manager position at Security Equipment Supply Inc?
Job Title: Accounting Manager
Company: Security Equipment Supply, Inc. (SES)
Location: Earth City, MO
Job Type: Full-Time | Exempt | Hybrid Work Model
About Security Equipment Supply (SES)
Security Equipment Supply (SES) is a second-generation, family-owned distributor of low-voltage electronics. Since 1982, we've grown to 16 locations across 11 states, delivering trusted solutions in access control, fire and life safety, surveillance, home entertainment, and more.
We’re in a transformative phase—modernizing operations, investing in technology, and enhancing customer and employee experiences. SES is committed to growing talent from within and creating meaningful career paths across the organization. Most roles are hybrid, providing flexibility while driving impact.
At SES, we don’t just work here — we care for what we’ve built and the people we work with.
Live the SES Way: Family • Respect • Celebration • Excellence • Integrity
Work the SES Way: Curiosity • Fun-Loving Spirit • Commitment to Growth
About the Role
Security Equipment Supply is looking for a Accounting Manager who thrives in an environment where the fundamentals of accounting are steady but the opportunities to improve systems, processes, and scalability are constant.
Yes, there are monthly reports and close cycles. But this is not a role where you simply run the same checklist every month.
You’ll be working on multiple initiatives at the same time, often at different stages—from improving the close process, to optimizing Microsoft Dynamics 365 Finance & Supply Chain, to strengthening controls and building a more scalable accounting engine for a growing company.
What You’ll Do
This role oversees General Accounting, Accounts Payable, and Accounts Receivable while partnering with leadership to ensure our financial infrastructure is built to support meaningful growth.
- Own the monthly close and reporting process with accuracy and discipline
- Work independently without needing constant direction
- Identify process improvements and system opportunities
- Manage multiple projects simultaneously while keeping the core accounting function running smoothly
- Turn complex accounting and ERP processes into practical, scalable solutions
Who You Are
If you’re the kind of Accounting Manager who gets things done, improves what’s broken, and doesn’t wait to be told where to add value, we’d like to talk with you.
What We’re Looking For
Education: Bachelor’s degree in Accounting or Finance
Training & Certifications: Holds a current CPA license in good standing; Strong GAAP knowledge and experience with audits and internal controls in system-driven environments.
Work Experience:
- CPA with strong GAAP knowledge 8–12 years of progressive accounting experience with team leadership
- Experience owning the close process, GL, AP, and AR
- Hands-on experience with Microsoft Dynamics 365 Finance & Supply Chain preferred
How We Measure Success
- Financial close timeliness, accuracy, and predictability
- Effectiveness and scalability of accounting operations
- Strength of internal controls and audit readiness,
- Working capital visibility and process efficiency
- Depth, stability, and performance of the accounting organization
Why Join SES?
You’ll have autonomy to run Accounting within a framework of business goals, compliance, and accountability. You’ll be part of a leadership team that values results, expects precision, and respects those who can deliver with confidence and urgency.
- Profit sharing & retirement: SEP IRA contributions and annual profit-sharing bonuses
- Health benefits: affordable medical, dental, and vision plans
- Career growth: ongoing development, advancement opportunities, and a promote- from-within culture
Work Environment and Physical Demands
- Standard office setting with occasional branch visits
- Ability to lift up to 25 lbs occasionally
- Some travel and occasional evening/weekend work required (<10%)
Ready to Take the Lead?
As part of our hiring process, we invite you to complete a brief personality survey to help us understand how you work best.
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Be part of a growing company where your work matters, your growth is supported, and your success is celebrated.