Staff Accountant & Internal Controls Consultant

MICHELLE ZUMSTEIN

Staff Accountant Internal Controls Consultant Full-Cycle Accounting

Johnson Valley, CA • 714-***-**** • ************@*******.*** linkedin.com/in/michelle-zumstein-b9205823

EXECUTIVE PROFILE

Results-driven accounting professional with over 20 years of progressive experience leading full-cycle accounting, month-end close, accounts payable, payroll, financial reporting, internal controls, and operational improvements. Trusted advisor to executive leadership with extensive experience supporting multi-entity organizations, charter schools, healthcare, manufacturing, and professional services. Recognized for improving accounting processes, strengthening compliance, and delivering accurate financial information in remote environments.

CORE EXPERTISE

• Full-Cycle Accounting

• Month-End Close

• Financial Reporting

• General Ledger

• Accounts Payable/Receivable

• Payroll & Benefits

• Internal Controls

• Audit Preparation

• Grant Compliance

• SOP Development

• Process Improvement

• Multi-Entity Accounting

TECHNOLOGY

• Sage 100C

• QuickBooks

• Bill.com

• Concur

• MAS 90

• ACCPAC

• ADP

• Paychex

• Axios

• Excel (PivotTables, XLOOKUP, VLOOKUP)

• Word • Outlook • Teams • SharePoint

SELECTED ACHIEVEMENTS

Over 20 years of progressive accounting leadership across education, healthcare, manufacturing, and professional services.

Processed 100–200 vendor invoices weekly while consistently meeting payment deadlines and maintaining high accuracy.

Led the transition to a paperless accounting environment, improving efficiency, audit readiness, and document retention.

Supported successful SOC 2 documentation efforts and strengthened internal controls.

Managed payroll, HR administration, grants, vendor management, and RFP coordination for multiple charter schools.

Maintained 15+ years of continuous advancement with Medata, demonstrating long-term reliability and performance.

PROFESSIONAL EXPERIENCE

ADKINS & COMPANY Internal Controls Consultant (Independent Contractor) Apr 2025 – Present

Process 100–200 vendor invoices weekly for four charter schools while ensuring timely and accurate payments.

Administer payroll, employee benefits, 401(k), HR onboarding, and personnel records.

Manage vendor onboarding, W-9 compliance, contract administration, and audit documentation.

Develop SOPs and strengthen internal controls to improve efficiency and compliance.

Coordinate RFPs, grant documentation, and regulatory reporting. MEDATA, INC. Staff Accountant Dec 2010 – Apr 2025

Managed full-cycle accounting using Sage 100C including AP, AR, GL, reconciliations, cash management, and financial reporting.

Supported month-end close, journal entries, balance sheet reconciliations, and financial statements.

Managed Concur expense reporting and ERP integration.

Modernized accounting workflows by leading digital transformation initiatives.

Maintained SOC 2 compliance documentation and internal controls. INDEPENDENT CONTRACTOR Full Charge Bookkeeper Apr 2009 – Dec 2010

Provided accounting services for manufacturing, healthcare, retail, and professional services clients.

Managed AP/AR, payroll, bank reconciliations, inventory, QuickBooks implementations, and financial reporting.

Clients included:

Majestic International Spice – Los Angeles, CA

RBP Manufacturing – Anaheim, CA

Air & Power Tools Specialties – Artesia, CA

Elite Off Road Performance – Anaheim, CA

Taco Bell Corp. / Yum.com – Irvine, CA

Hans Karge DDS – Los Ángeles, CA

Kluger Architects – Signal Hill, CA

BUSINESS PHONES DIRECT Full Charge Bookkeeper / Office Manager Sep 2003 – Feb 2009

Directed accounting operations, payroll, inventory, HR administration, and executive support using ACCPAC. WILLIAMS & RIBBS LLP Full Charge Bookkeeper May 1999 – Sep 2003

Maintained accounting records, billing, reconciliations, tax support, and AP/AR using MAS 90. References upon request.

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