Quickbooks Invoicing and Billing Specialist

About The Role

Gant Global Services is seeking a detail-oriented Invoicing Specialist to manage end-to-end invoicing for federal government clients and subcontractors in a fully remote environment. This role is hands-on and requires someone who is accurate, self-managed, and comfortable working with QuickBooks, spreadsheets, Microsoft Office 365, and multiple shared email inboxes.

Key responsibilities

• Create, review, and submit invoices for federal government customers and subcontractors in accordance with contract terms and client-specific requirements.
• Prepare and process invoices in QuickBooks and reconcile them to multiple Excel or Google Sheets tracking files.
• Monitor invoice aging and payment status; follow up on outstanding invoices to ensure timely collection and accurate accounts receivable reporting.
• Maintain organized, audit-ready documentation for each invoice, including timesheets, subcontractor invoices, purchase orders, funding documents, and approvals.
• Actively monitor and manage several shared billing and contract email inboxes to capture invoice requests, approvals, and questions from clients and subcontractors.
• Coordinate with project managers, contractors, and accounting to resolve discrepancies, correct billing errors, and implement client-specific billing formats or portals.
• Update and manage detailed tracking spreadsheets for contract funding, ceilings, task orders/CLINs, and subcontractor balances.
• Follow established invoicing procedures and internal controls to support compliance with government contracting requirements.
• Performs other tasks and duties as assigned
  
  

Required Qualifications

• 2 - 4 years of invoicing, billing, and/or accounts receivable experience, preferably in a government contracting or professional services environment.
• Strong QuickBooks experience (Desktop and/or Online) including invoice creation, adjustments, and reporting.
• Advanced skills with Excel or Google Sheets (e.g., filters, lookups, pivoting between multiple tabs or files).
• Exceptional attention to detail and accuracy while supporting multiple contracts, subcontractors, and deadlines.
• Self-managed and highly organized, with the ability to prioritize work and meet strict billing cutoffs in a remote setting.
• Excellent written and verbal communication skills. Comfortable working with stakeholders across finance, contracts, operations, and project teams.
• Experience with federal government contracts/portals. (Invoicing through IPP, Tungsten and/or PIEE portals is highly desirable.)
  
  

Work arrangement and benefits

• Full-time, remote position based in the United States, with core hours aligned to Eastern Standard Time.
• Paid Time Off (PTO) and company-paid holidays.
• Optional health benefits and a 401(k) plan.
• Opportunity to grow with Gant Global Services (GGS), Inc. and help refine invoicing processes, tools, and reporting as the organization scales.