• Investigate and resolve all client telecom carrier billing issues • Secure carrier credits/refunds • Track and monitor open disputes and ensure timely resolution, while maintaining thorough documentation for traceability and metrics • Ensure adherence to client financial controls, corporate policies, and telecom contract guidelines • Monitor compliance requirements related to telecom billing and SLA’s • Serve as a point of contact for carrier escalations, ensuring strong partnerships while advocating the company’s best interests

• Prepare, review, and issue customer invoices in accordance with contract terms and billing schedules, including reading and interpreting contracts to determine what needs to be invoiced and when. • Verify accuracy of billing data to ensure compliance with approved pricing and deliverables, including validating that what comes in from Salesforce reflects contractual obligations before invoicing out. • Perform revenue reconciliations including month-end comparisons of billed and recognized revenue, including maintaining and reconciling deferred revenue schedules and spreading multi-line invoices across the appropriate recognition periods. • Investigate and resolve discrepancies between billing schedules, revenue reports, and accounting records. • Maintain and update billing schedules, trackers, and related documentation. • Identify and correct missing, inaccurate, or duplicate billings. • Perform collections tasks, coordinate with and support the sales team by providing invoice copies, documentation, and clarification for outstanding accounts. • Coordinate with internal departments (sales operations, customer success, procurement, etc.) to resolve billing and revenue-related inquiries. • Provide necessary documentation during internal and external audits. • Maintain organized financial records in accordance with company policies and audit requirements. • Participate in the NetSuite implementation and user testing as we transition away from manual deferred revenue tracking; go-live is targeted for August 2026. • Perform additional finance and accounting duties as assigned.

• Generate reports and extract information using TOTVS RM • Prepare and validate billings based on payroll data and financial controls • Prepare and verify Excel spreadsheets to calculate charges and compose billing • Issue tax invoices (notas fiscais) and invoices • Contact clients to send billing, clarify questions, and follow up on outstanding items • Manage client portfolio and outstanding billing balances • Update financial systems and reports • Support vendor, consultant, and client registration processes • Monitor administrative and financial controls of the operation • Handle large volumes of information and multiple simultaneous demands

• Extract monthly billing data from the Zum portal for all assigned accounts • Conduct a structured validation of portal data against Operations adjustment submissions for each account • Apply account-specific contract rules to validated billing data • Prepare invoices in NetSuite for each assigned account using fully validated billing data • Submit completed invoices to the Manager and operations stakeholders for review • Issue approved invoices to the designated district accounts payable contacts via NetSuite • Provide billing data, supporting documentation, and account context to the Sr. Manager in support of dispute investigations • Maintain organized, complete billing records for all assigned accounts • Identify and escalate recurring data quality issues or systemic patterns to the leadership