Billing Specialist
Posted 16 Sep 2026
Advertised as “Senior Billing Specialist”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 5+ yrs
- Management level
- Individual contributor
- Employment
- Hybrid
No salary listed for this role.
Field of studyAccounting, Business Management (or related)
Study levelAssociate degree
Our team of talented individuals is what makes us successful. To support our team, we provide a balanced mix of benefits and programs. Your total rewards package includes competitive pay, benefits, and perks, flexible work-life balance, professional development opportunities, and performance and recognition programs. We offer a comprehensive benefits package that includes medical, dental, vision, life, and disability, voluntary benefit programs (critical illness, hospital, and accident), health savings and flexible spending accounts, and retirement 401K plan. One of our fundamental principles is to offer competitive health and welfare benefits to our team members, providing coverage and care for you and your family. Full-time employees working at least 30 hours a week on a regular basis are eligible to participate in our benefits and paid leave programs. We pride ourselves on our collaborative work environment and culture, which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation.
Seneca Holdings has an immediate opening for a qualified Sr. Billing Specialist and will report to the Manager of Billing. This position is located in Williamsville, NY.
Roles and Responsibilities include but are not limited to:
- Responsible for daily processing of company invoices in a high-volume multi-company environment. Includes generating project based invoices for labor hours, travel, ODC/Material, project progress payments, submitting for payment and posting in the accounting system
- Manage billing for a variety of contract types, including Cost-Reimbursable, Time & Materials (T&M), Firm Fixed Price (FFP) for government and commercial contracts, utilizing an ERP system.
- Review contracts, modifications, funding documents, and billing schedules to ensure compliance with contractual terms and award requirements
- Demonstrate a strong understanding of fiscal year requirements, accounting periods, and contract funding timelines to ensure invoices are posted to the appropriate billing period and accounting cycle
- Will create supplemental billing templates in Excel
- Review associated backup documentation to ensure accuracy and identify any missing or incomplete information required for billing, including travel receipts, expense reports, timesheets, and other supporting documentation
- Will interact and understand the various government/customer invoicing platforms required in submitting invoices including WAWF, IPP and GSA
- Will be responsible for maintaining electronic billing files
- Follow up on billing issues, rejections and resolution of past due invoices
- Working closely with Project Controls, Accounts Receivable, and Payroll departments, as well as Program Managers as necessary