Senior Billing Specialist (Contractor)

Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team.

Job Title: Senior Billing Specialist (Contractor)

Location(s): Atlanta, GA
(Hybrid: 2-3 days onsite)

Position Summary
The Senior Billing Specialist (Contractor) supports the Retail Billing Operations team by performing complex billing activities including invoice creation, processing, review, and issue resolution. This role ensures accurate delivery of invoices by email or postal mail, tracks undeliverable invoices, and works with cross-functional partners to correct client contact information and delivery preferences. The contractor will work independently, meet defined SLAs, and contribute to process documentation and operational improvement.

• Invoice Creation, Processing & Review
  • Create invoices accurately and on schedule across assigned billing cycles.
  • Review invoices for pricing, contract compliance, tax accuracy, and system integrity.
  • Reconcile invoice data prior to release to ensure error-free distribution.
• Returned / Undeliverable Invoice Tracking
  • Log and track all returned or undeliverable invoices (postal returns, email bounce-backs, blocked domains, invalid email addresses).
  • Investigate and resolve root causes, including address inaccuracies, outdated contacts, or customer system issues.
  • Reissue corrected invoices and update billing profiles, delivery methods, or customer preferences as needed.
• Client Delivery Method Verification
  • Verify and update client invoice delivery methods (email or postal mail) to ensure accurate and timely distribution.
  • Maintain accurate customer contact records, including email addresses, mailing addresses, and designated billing recipients.
  • Conduct outreach to clients or internal teams when delivery failures occur to validate preferred communication channels.
• Complex Billing Issue Resolution
  • Research and resolve escalated requests such as credits/refunds, account reviews, pricing disputes, and cancellations.
  • Execute complex manual transactions and support investigations requiring cross-system validation.
  • Document findings, steps taken, and customer communication in SNOW/Salesforce.
• Operational Processing & SLAs
  • Process SNOW tickets, emails, and tasks within SLA standards.
  • Maintain reports and reconciliations for adjustments, cancellations, and delivery-related exceptions.
  • Support month-end close through reconciliation and exception cleanup.
• Process Standardization & Team Support
  • Contribute to SOPs and process documentation, especially around invoice distribution, delivery methods, and exception handling.
  • Identify patterns related to undeliverable invoices and recommend improvements to reduce repeat defects.
  • Provide peer support or informal training on complex workflows as needed.

• 5+ years billing operations, accounts receivable or similar experience.
• Strong proficiency with Excel (intermediate/advanced) and billing systems such as SAP, RMB, AX, AS400, Oracle AR, plus ServiceNow/Salesforce.
• Excellent attention to detail, analytical skills, and accuracy in high-volume environments.
• Clear, professional communication skills with experience handling escalations.
• Ability to work independently and meet deadlines consistently.

Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities.