Accounting Specialist – Accounts Receivable

Active Security Consulting LLC•Loudoun Valley Estates, VA

2h•$46,500 - $67,000•Onsite

About The Position

The Accounting Specialist – Accounts Receivable owns the billing-to-cash cycle for assigned projects and customer accounts. The role prepares and issues accurate, timely customer invoices, applies cash receipts, maintains the accounts receivable aging, and leads collection follow-up. It ensures contracts are correctly set up in Active Security’s accounting system so billing milestones, progress billing, and agreement billing occur on schedule and according to contract terms. The position reports directly to the Finance Department lead and works closely with project and program managers, contracts staff, and the finance team to resolve billing disputes, reconcile customer accounts, and support month-end close. The role is accountable for accurate A/R records, revenue recognition support, and the billing side of project P&Ls for assigned projects. Success is measured by timely and accurate invoicing, DSO and past-due balances meeting finance targets, accurate cash application and monthly A/R-to-general-ledger reconciliation, prompt resolution of disputes and short-pays, monthly review of unbilled revenue and billing milestones, and complete customer and contract setups before first invoices.

Requirements

High school diploma or equivalent required.
At least 3–5 years of accounting experience, including at least 2 years focused on accounts receivable, billing, or collections.
Proficiency in Microsoft Office, particularly Excel, and experience with accounting or ERP software.
Strong understanding of the order-to-cash cycle, cash application, and A/R reconciliation.
Ability to read contracts and POs to identify billing terms, spot discrepancies, and maintain accurate records.
Confident, professional communication with customers about collections and disputes, and ability to coordinate with project managers to obtain billing information on time.
Ability to work independently and collaboratively while managing multiple priorities and meeting deadlines.
Ability to work standard business hours, with flexibility to support critical accounting deadlines, month-end close, audits, and other business needs.
Strong oral and written communication skills to interact with peers, supervisors, and clients.
Detail-oriented analytical and problem-solving skills.
Must pass a background check, have a valid driver’s license, and be eligible for U.S. Government Security Clearance.

Nice To Haves

Associate’s degree in Accounting, Finance, Business Administration, or a related field.
Experience with project-based or contract billing.
Government contract billing experience, including WAWF/PIEE and progress or milestone billing.

Responsibilities

Prepare, review, and issue customer invoices from PROCAS and ConnectWise, including milestone, progress, time-and-materials, and recurring agreement billing.
Work with Program Managers to confirm billing schedules, percent complete, and billable time and materials before invoicing.
Submit government invoices through customer portals such as WAWF/PIEE and commercial customer portals as required.
Apply customer payments, including checks, ACH, wires, and credit cards, and reconcile deposits to bank activity.
Maintain the A/R aging and conduct regular aging reviews with the finance lead and project teams.
Lead collection activities, including payment reminders, statements, past-due follow-up, and escalation of at-risk accounts.
Research and resolve billing disputes, short-pays, credits, and unapplied cash.
Set up new customers and contracts in company systems, including billing contacts, credit terms, tax status, and PO/contract values.
Track customer POs and contract funding against billings, and flag low remaining funding or periods of performance.
Reconcile the A/R subledger to the general ledger and support month-end and quarter-end close, audits, and cash forecasting.
Prepare A/R reports for finance leadership, including aging, DSO, collections forecast, and unbilled revenue.
Provide backup support for A/P, expense reporting, and credit card reconciliation as needed.
Perform data entry and quality control for billing and customer records across company systems.