Senior Biller

By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide.

Ownership of billing cycle on specific projects assigned, including preparation, posting, and collection.
• Prepare and submit invoices for government contracts (T&M, CPFF, FFP, etc.)
• Ensure compliance with FAR, DFARS, and contract-specific billing requirements
• Maintain detailed billing records and support month-end close processes
• Collaborate with contracts, finance, and project teams for accurate invoice submissions, including preparation of backup supporting documentation as required.
• Assist with collections follow-up and resolve invoice discrepancies
• Utilize billing systems such as Deltek Costpoint
• Ability to communicate with Project Managers and Finance on billing issues or re-classes as needed
• Assist with entering accounts payable vouchers
• Other duties as assigned

• 3+ years of GovCon billing experience
• Strong understanding of government contract types and invoicing structures
• Familiarity with government compliance regulations (FAR/DFARS)
• Experience using Costpoint, Unanet, or similar systems preferred
• Excellent attention to detail, organizational, and communication skills