Staff Accountant with 10+ Years in AP/AR & Reconciliations

Darnell Mathis

Katy, TX 989-***-**** *******.********@*****.*** www.linkedin.com/in/darnell-mathis

Staff Accountant Accounting Professional

AP/AR, Cash Applications, Reconciliations & Financial Reporting

Accounting professional with 10+ years of experience in AP/AR, cash applications, general ledger reconciliation, financial reporting, and month-end close in energy, oil & gas, and corporate environments. Skilled in resolving payment discrepancies, supporting audits, and improving financial processes and operations. Experienced in Agile financial project environments, collaborating with cross-functional teams to ensure accurate and compliant financial data and increase efficiency.

Expertise:

Accounts Payable Accounts Receivable Management Cash Applications & Payment Posting

General Ledger Reconciliation Journal Entries Month-End Close Financial Reporting Bank Reconciliation

Credit Card Settlement Multi-State Sales Tax Reporting SOX Compliance Internal Controls

Financial Process Improvement Wire Transfers, Prepayments & Check Runs Inventory Accounting Support

Stakeholder Collaboration Cross-Functional Communication Audit Preparation Agile Financial Project Support

PROFESSIONAL EXPERIENCE

Tek Systems – Contract Consultant 2023 – Present

Client: Northwest Natural, Business Analyst (2023 –2024)

Partnered with finance teams to resolve accounting discrepancies during SAP S/4HANA implementation.

•Supported process improvements by reducing manual reconciliation workloads.

•Developed and validated business requirements ensuring compliance and accurate reporting.

•Conducted change management and training sessions for stakeholders on system upgrades.

Talance Group – Contract / Full-Time Transition 2019 – 2023

Client: Knight Energy, Cash Application Specialist

Managed cash applications, payment posting audits, and reconciled general ledger entries in SAP.

•Resolved high-level payment discrepancies while maintaining SOX compliance.

•Processed AP/AR transactions, wire postings, and payment verifications.

•Prepared and analyzed financial statements for accuracy and regulatory compliance.

•Led training for accounting teams on financial systems and process updates.

Innovative Systems– Contract Consultant 2018 –2019

Client: Constellation Energy, Business Analyst

Reconciled accounts, researched variances, and processed AP/AR transactions.

•Managed wire postings, credit card settlements, and verified payments.

•Supported SOX compliance and collaborated with Risk Management to prevent operational disruptions.

•Functioned as liaison between accounting, billing, treasury, and collections teams.

Professional Alternatives– Contract Consultant 2017 –2018

Client: Rubicon Oilfield International, Account Analyst (2018)

Streamlined revenue processes during M&A and maintained SOX-compliant billing integrity.

•Performed cash applications for multiple billing entities and foreign currencies.

•Verified invoices, reconciled accounts, and supported month-end revenue recognition.

•Assisted with audit requests and identified system enhancement opportunities, reconciled over 1000 backlog invoices.

Professional Alternatives, Continued.

Client: Sysco, Corporate Accounting Reconciliation Analyst (2017)

Prepared journal entries, bank reconciliations, and financial schedules in SAP.

•Verified customer payment postings and audited deposits.

•Managed disputes for returned checks and ACH transactions.

Consumers Energy (Direct Hire) 2005 –2015

Accounts Payable Analyst III

Processed accounts payable (AP), analyzed payments, and assisted with unidentified customer payments.

•Managed billing processes for multiple contract types (Cost Plus, T&M, Firm Fixed Price).

•Streamlined AP processes to improve efficiency and accuracy.

•Produced weekly/monthly revenue reports and analyses for management.

SYSTEMS & TOOLS

SAP S/4HANA Oracle Dynamics 365 Sage Teams SharePoint MS Office

EDUCATION & CERTIFICATIONS

Bachelor of Arts (BA) in Business Administration, Minor in Finance, Northwood University, Cedar Hill, TX

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