Terrestris LLC

GovCon Billing, Accounts Receivable Clerk

Terrestris LLC
Posted 10/19/2026full-timeSpringfield • Virginia • United StatesJunior💰 $50,000 - $60,000 per yearWebsite
Apply

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in government contract billing, including FFP, T&M, LOE, and milestone billing, while ensuring compliance with contract requirements. Proficient in preparing and submitting invoices accurately and on schedule, with strong attention to detail and organizational skills.

Highest-signal resume keywords
Government Contract BillingInvoice Preparation and SubmissionAccounting/ERP System SetupAttention to DetailMicrosoft Excel Proficiency

Tech Stack

Tools & technologies
ERP

About the role

Key responsibilities & impact
  • Support daily accounts receivable and billing operations
  • Read and understand customer and government contracts, including billing terms, funding, contract line items, period of performance, and invoicing requirements
  • Set up customers, contracts, billing information, and applicable billing terms in the accounting/ERP system
  • Prepare, process, and distribute customer and government invoices accurately and on schedule
  • Review contracts and supporting documentation to ensure invoices comply with contract requirements
  • Apply government contract billing types, 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
  • Submit government invoices through WAWF, IPP, or applicable government/customer invoicing portals
  • Track invoice submissions, statuses, rejections, suspensions, approvals, and payments
  • Follow up on outstanding invoicing issues
  • Review invoices and supporting documentation for completeness, accuracy, and compliance
  • Support payment processing, account reconciliation, collections, financial recordkeeping, customer and contract setup, and expense processing

Requirements

What you’ll need
  • Authorization to permanently work in the United States without sponsorship
  • High school diploma or equivalent
  • At least 1 year of experience in government contract billing, 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
  • Comfortable 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 while also collaborating effectively with a team
  • Strong written and verbal communication skills
  • Experience submitting invoices through WAWF, IPP, or other customer/government invoicing portals is strongly preferred
  • Associate's or Bachelor's degree in Accounting, Finance, Business, or a related field is an advantage
  • 2–5 years of accounts receivable, billing, or government contract billing experience is an advantage
  • Hands-on government contracting billing experience is strongly preferred
  • Experience with Deltek Costpoint, Unanet, QuickBooks, NetSuite, Sage, Microsoft Dynamics, or similar software is an advantage

Benefits

Comp & perks
  • Health benefits
  • Financial benefits
  • Retirement benefits
  • Paid leave
  • Professional development
  • Tuition assistance
  • Work-life programs
  • Employee awards for exceptional performance and superior demonstration of service standards

ATS Keywords

✓ Tailor your resume
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Accounts ReceivableBilling OperationsContract ReviewFinancial RecordkeepingExpense ProcessingInvoicing ComplianceGovernment Contract TermsBilling Method DeterminationCustomer SetupPayment Processing
Soft Skills
Strong Organizational SkillsTime-Management SkillsWritten Communication SkillsVerbal Communication SkillsAbility to Work Independently
Tools & Technologies
WAWFIPPDeltek CostpointUnanetQuickBooksNetSuiteSageMicrosoft DynamicsMicrosoft OfficeExcel
Industry Keywords
Government Contract BillingFirm-Fixed-Price (FFP)Time & Materials (T&M)Level of Effort (LOE)Milestone BillingFinancial Information ManagementContract TermsBilling RequirementsAccounts Receivable ExperienceBookkeeping