GovCon Billing / Accounts Receivable Clerk

Terrestris Global Solutions • Woodbridge, VA

7d • $50,000 - $60,000

About The Position

Terrestris is seeking a Junior GovCon Billing / Accounts Receivable Clerk to support its Finance & Accounting team. The position supports daily accounts receivable and billing operations, including government contract billing, invoice preparation and submission, payment processing, account reconciliation, collections support, financial recordkeeping, customer and contract setup, and expense processing. It is suitable for accounting professionals ranging from entry-level to mid-level who want to develop a career in government contracting. The ideal candidate is detail-oriented, organized, dependable, comfortable working with numbers, and able to interpret contract requirements and apply them to accurate billing. An understanding of government contracting and federal invoicing is needed, and hands-on government contract billing experience is strongly preferred.

The clerk reads customer and government contracts; sets up customer, contract, and billing details in an accounting or ERP system; prepares and submits invoices; applies contract-specific billing methods; and monitors invoice status through approval and payment. Invoices may cover labor, travel, other direct costs, and reimbursable expenses. The role also reviews supporting documentation for accuracy, completeness, and contract compliance, and follows up on invoice issues.

Requirements

• Authorization to work permanently in the United States without sponsorship.
• High school diploma or equivalent.
• At least 1 year of experience in government contract billing, accounts receivable, accounting, bookkeeping, finance, or a related field.
• Experience reading and understanding contracts and using contract terms to establish billing requirements.
• Experience setting up customers and contracts in an accounting or ERP system.
• Knowledge of government contract billing, including FFP, T&M, LOE, and milestone billing.
• Experience preparing and submitting invoices to government or commercial customers.
• Strong attention to detail and accuracy.
• Basic understanding of accounting principles.
• Comfort working with numbers and financial information.
• Proficiency with Microsoft Office, particularly Excel and Outlook.
• Strong organizational and time-management skills.
• Ability to handle confidential financial information appropriately.
• Ability to work independently and collaborate effectively with a team.
• Strong written and verbal communication skills.

Nice To Haves

• Experience submitting invoices through WAWF, IPP, or other customer or government invoicing portals.
• Associate's or Bachelor's degree in Accounting, Finance, Business, or a related field.
• 2–5 years of accounts receivable, billing, or government contract billing experience.
• Hands-on experience reading government contracts and setting up contract billing in an ERP or accounting system.
• Experience billing federal government contracts under FFP, T&M, LOE, and milestone contract types.
• Experience submitting and tracking invoices through WAWF, IPP, or government or customer billing portals.
• Experience reviewing contract funding, CLINs, billing periods, labor, travel, and other direct costs before submitting invoices.
• Experience processing employee travel and expense reports, including reviewing receipts, coding expenses, and ensuring compliance with company policies.
• Experience billing clients for reimbursable expenses, including travel and other billable costs.
• Experience with an accounting or ERP system such as Deltek Costpoint, Unanet, QuickBooks, NetSuite, Sage, Microsoft Dynamics, or similar software.
• Experience with government contracting or federal government invoicing.
• Familiarity with accounts receivable aging, reconciliations, collections, or cash application.
• Experience working in a professional services or government contracting environment.

Responsibilities

• Read and understand customer and government contracts, including billing terms, funding, contract line items, performance periods, and invoicing requirements.
• Set up customers, contracts, billing information, and applicable billing terms in the accounting or ERP system.
• Prepare, process, and distribute customer and government invoices accurately and on schedule.
• Review contracts and supporting documentation to ensure invoices meet contract requirements.
• Apply government contract billing methods, including Firm-Fixed-Price (FFP), Time & Materials (T&M), Level of Effort (LOE), and milestone-based billing.
• Determine the appropriate billing method based on contract terms.
• Prepare invoices for labor, travel, other direct costs, and reimbursable expenses in accordance with contract requirements.
• Submit government invoices through WAWF, IPP, or applicable government or customer invoicing portals.
• Track invoice submissions, status, rejections, suspensions, approvals, and payments, and follow up on outstanding issues.
• Review invoices and supporting documentation for completeness, accuracy, and compliance with contract requirements.
• Support daily accounts receivable and billing operations, including payment processing, account reconciliation, collections support, financial recordkeeping, and expense processing.

Benefits

• Health benefits
• Financial benefits
• Retirement benefits
• Paid leave
• Professional development
• Tuition assistance
• Work-life programs
• Award programs recognizing exceptional performance and demonstration of service standards

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: High school or GED