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I’m Shannon M. Heiser, an accounts payable and accounting professional with 25+ years of experience supporting high-volume invoice processing, vendor management, and month-end close. I’m known for accurate, compliance-focused work across 3-way matching, invoice reconciliation, payment processing, and general ledger support—always keeping things moving smoothly for both internal teams and vendors. I also bring strong skills in travel and expense auditing, corporate credit card administration, and IRS 1099 preparation and distribution. Across roles spanning multiple ERPs and reporting tools, I enjoy troubleshooting complex payment issues, improving process efficiency, and producing clear financial reporting using advanced Excel, Cognos/Crystal reporting, and systems such as SAP, Deltek Costpoint, JD Edwards, and Microsoft Dynamics.…I’m Shannon M. Heiser, an accounts payable and accounting professional with 25+ years of experience supporting high-volume invoice processing, vendor management, and month-end close. I’m known for accurate, compliance-focused work across 3-way matching, invoice reconciliation, payment processing, and general ledger support—always keeping things moving smoothly for both internal teams and vendors. I also bring strong skills in travel and expense auditing, corporate credit card administration, and IRS 1099 preparation and distribution. Across roles spanning multiple ERPs and reporting tools, I enjoy troubleshooting complex payment issues, improving process efficiency, and producing clear financial reporting using advanced Excel, Cognos/Crystal reporting, and systems such as SAP, Deltek Costpoint, JD Edwards, and Microsoft Dynamics.

Shannon M. Heiser

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I’m Shannon M. Heiser, an accounts payable and accounting professional with 25+ years of experience supporting high-volume invoice processing, vendor management, and month-end close. I’m known for accurate, compliance-focused work across 3-way matching, invoice reconciliation, payment processing, and general ledger support—always keeping things moving smoothly for both internal teams and vendors. I also bring strong skills in travel and expense auditing, corporate credit card administration, and IRS 1099 preparation and distribution. Across roles spanning multiple ERPs and reporting tools, I enjoy troubleshooting complex payment issues, improving process efficiency, and producing clear financial reporting using advanced Excel, Cognos/Crystal reporting, and systems such as SAP, Deltek Costpoint, JD Edwards, and Microsoft Dynamics.…I’m Shannon M. Heiser, an accounts payable and accounting professional with 25+ years of experience supporting high-volume invoice processing, vendor management, and month-end close. I’m known for accurate, compliance-focused work across 3-way matching, invoice reconciliation, payment processing, and general ledger support—always keeping things moving smoothly for both internal teams and vendors. I also bring strong skills in travel and expense auditing, corporate credit card administration, and IRS 1099 preparation and distribution. Across roles spanning multiple ERPs and reporting tools, I enjoy troubleshooting complex payment issues, improving process efficiency, and producing clear financial reporting using advanced Excel, Cognos/Crystal reporting, and systems such as SAP, Deltek Costpoint, JD Edwards, and Microsoft Dynamics.

Available to hire

I’m Shannon M. Heiser, an accounts payable and accounting professional with 25+ years of experience supporting high-volume invoice processing, vendor management, and month-end close. I’m known for accurate, compliance-focused work across 3-way matching, invoice reconciliation, payment processing, and general ledger support—always keeping things moving smoothly for both internal teams and vendors.

I also bring strong skills in travel and expense auditing, corporate credit card administration, and IRS 1099 preparation and distribution. Across roles spanning multiple ERPs and reporting tools, I enjoy troubleshooting complex payment issues, improving process efficiency, and producing clear financial reporting using advanced Excel, Cognos/Crystal reporting, and systems such as SAP, Deltek Costpoint, JD Edwards, and Microsoft Dynamics.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Work Experience

Accounts Payable Analyst at SHORT ELLIOTT HENDRICKSON, INC.

January 1, 2023 - January 1, 2026

Processed high-volume accounts payable transactions with accuracy and timeliness. Performed invoice validation, payment processing, and vendor account reconciliations, including 3-way matching of purchase orders, receiving documentation, and vendor invoices. Maintained vendor master records, researched and resolved invoice discrepancies/payment exceptions, and handled vendor inquiries. Prepared and posted journal entries for AP transactions while supporting internal controls and audit requirements. Collaborated cross-functionally and with vendors to improve payment efficiency and satisfaction.

Staff Accountant at ADVANCED IT CONCEPTS

January 1, 2022 - January 1, 2023

Audited and processed employee expense reports in SAP Concur, ensuring travel and expense policy compliance. Generated Cognos reports and supported Concur user access and system configurations. Administered corporate credit card programs (issuance, cancellations, and credit limit adjustments), processed AP invoices and credit memos in Deltek Costpoint, and reconciled credit card accounts while investigating transaction discrepancies. Prepared, reviewed, and distributed IRS Form 1099 documentation and supported financial controls through audit reviews and compliance monitoring. Used advanced Excel functions for financial analysis and reporting.

Invoice Reconciliation Analyst at THE BOLTON GROUP

January 1, 2020 - January 1, 2022

Investigated and resolved invoice and payment discrepancies for transportation carriers. Processed manual payments using SAP, Winshuttle, and Coupa. Performed invoice reconciliation and goods receipt investigations, working with vendors and internal stakeholders to resolve aging invoice issues. Maintained strong vendor relationships to support timely payment resolution.

Accounts Payable Analyst at COLE ENGINEERING SERVICES

January 1, 2017 - January 1, 2020

Processed AP invoices and credit memos in Deltek Costpoint and managed weekly payment processing and check disbursements. Administered corporate credit card programs and reconciled monthly statements. Maintained vendor master files and compliance documentation, prepared and filed IRS Form 1099 reports, and ensured regulatory compliance. Managed sales and use tax filings for multiple states and supported month-end close and financial reporting. Used Excel tools to analyze payment activity and identify financial trends.

Data & Systems Analyst at HOUGHTON MIFFLIN HARCOURT

January 1, 2014 - January 1, 2017

Developed operational and financial reporting solutions using Cognos and Excel. Analyzed structured and unstructured data to identify trends and process improvements. Led Concur configuration and implementation initiatives during acquisitions. Designed dashboards and reporting tools for business leadership and produced ad hoc reporting and data analytics for executive decision-making.

Senior Accounts Payable Analyst at SAFEMARK SYSTEMS

January 1, 2012 - January 1, 2014

Processed invoices and credit memos for multiple entities and managed weekly payment processing and disbursement functions. Administered American Express corporate card programs and audited expense reports for policy compliance. Prepared 1099s and W-9 documentation, reconciled month-end reports, and maintained vendor database records and master data. Posted journal entries and reconciled general ledger accounts while supporting financial analysis and special projects for executive leadership.

Senior Accounts Payable Team Leader at FARO TECHNOLOGIES

January 1, 2011 - January 1, 2012

Audited Concur expense reports and generated Cognos reports for Accounting. Trained users and provided Concur system support. Prepared accruals and recurring journal entries and oversaw annual 1099 reporting and compliance activities. Developed process improvements to enhance AP efficiency and strengthen financial controls.

Accounts Payable Assistant Manager at COX MEDIA GROUP

January 1, 2004 - January 1, 2011

Supervised AP operations and trained staff. Processed invoices, maintained vendor records, and ensured documentation compliance. Managed contractor payment uploads and vendor 1099 compliance. Reconciled corporate card transactions using SAP and Excel and maintained strong vendor relationships through timely communication and payment resolution.