Accounting Support Specialist

ECS Ltd•Chantilly, VA

4h•Hybrid

About The Position

ECS Group of Companies are seeking an adaptable and detail-focused Accounting Support Specialist to support both Accounts Payable (AP) and Accounts Receivable (AR) functions, with a strong emphasis on account reconciliation, general ledger accuracy, and transaction integrity. This role requires critical thinking, problem-solving, and the ability to shift between AP and AR responsibilities based on department needs. The ideal candidate will bring a strong foundation in accounting principles and demonstrate the ability to resolve complex transactional issues in a dynamic, multi-entity environment.

Requirements

Associate’s degree in Accounting, Finance, or a related field required; Bachelor’s preferred.
2+ years of accounting experience with a focus in AP, AR, or GL accounting.
Experience working in a multi-entity environment is required; intercompany experience preferred.
Strong understanding of debits/credits and general ledger transaction flow.
Familiarity with ERP systems (e.g., Microsoft Dynamics 365, NetSuite, SAP) is strongly preferred.
Proficient in Excel and capable of working with large datasets to identify and resolve variances.
Comfortable researching and resolving complex transactional issues independently.

Responsibilities

Perform reconciliations of general ledger accounts related to AP, AR, cash, and other balance sheet accounts.
Investigate and resolve discrepancies between subledgers and the general ledger to ensure accurate financial reporting.
Assist with month-end close activities, including preparation of journal entries and reconciliation schedules.
Support audit requests by preparing reconciliations and documentation in accordance with internal controls.
Maintain documentation of reconciliations and ensure compliance with internal accounting policies and procedures.
Research and resolve complex AR issues, including misapplied or unidentified payments, overpayments, and short-pays.
Apply payments across multiple entities and subsidiaries, ensuring accuracy in intercompany and multi-entity structures.
Review and verify AR transactions are accurately recorded to the general ledger.
Assist with client refunds, credit memo applications, and revenue reclassification when needed.
Support a compliant BillPay process, including accurate application of client credit card payments and internal routing for approval and posting.
Work closely with billing, sales, and client services teams to troubleshoot client account issues and support accurate cash application.
Assist with review and entry of vendor invoices, ensuring proper coding to GL accounts and entities.
Support weekly payment processing by reviewing batches for accuracy and completeness.
Reconcile monthly company credit card activity, ensuring all receipts are collected, categorized, and matched to full payment amounts.
Research AP variances and ensure expense recognition aligns with company policy and period cutoffs.
Assist with vendor reconciliations and ensure proper posting of accruals and prepaids at period-end.