AR​/Billing Specialist

Cirrascale Cloud Services provides high-performance cloud infrastructure purpose-built for deep learning, generative AI, and large-scale AI inference workloads. We specialize in dedicated GPU cloud solutions tailored to the unique needs of startups, research labs, and enterprise AI teams. Our mission is to accelerate AI innovation by combining powerful hardware with white-glove service and flexible, custom-built environments.

The Senior Accounts Receivable, Billing & Collections Specialist is responsible for managing the customer billing and collection cycle, from contract and order review, billing setup, and invoice preparation through cash application, account reconciliation, and collection.

This role supports a complex B2B cloud infrastructure environment with highly customized customer arrangements, including recurring services, usage-based billing, minimum commitments, customer deposits and prepayments, milestone-based charges, one-time fees, hardware transactions, and other negotiated commercial terms. The successful candidate must be comfortable reviewing executed agreements, order forms, purchase orders, amendments, and supporting usage data to ensure invoices are complete, accurate, and consistent with contractual terms.

• Review executed customer agreements, order forms, purchase orders, amendments, pricing schedules, and other supporting documentation to establish and maintain accurate billing requirements.
• Generate and issue accurate and timely customer invoices in accordance with contractual pricing, billing frequency, service periods, usage, milestones, minimum commitments, payment terms, and other negotiated provisions.
• Support billing for recurring cloud and managed services, usage-based compute services, one-time/non-recurring charges, customer prepayments and deposits, hardware transactions, and other customer-specific arrangements.
• Validate usage reports and other operational data against contractual pricing before invoicing and investigate discrepancies between system-generated usage information and customer-specific contracted rates.
• Confirm service commencement dates, deployment status, acceptance criteria, billing milestones, and other triggering events with Operations and Accounting before billing when required.
• Maintain accurate customer billing schedules and supporting documentation for contract modifications, renewals, expansions, credits, and other changes.
• Review customer purchase orders and billing instructions for consistency with executed agreements and elevate discrepancies before invoices are issued.
• Coordinate with Accounting regarding transactions requiring special consideration, including customer deposits, advance billings, unbilled amounts, credits, variable or usage-based charges, and principal-versus-agent/pass-through arrangements.
• Support appropriate sales tax treatment by maintaining customer exemption documentation and coordinating questions regarding taxable and non-taxable charges with Accounting/Tax team.
• Maintain a clear audit trail supporting the calculation and contractual basis for each material customer invoice.

• Maintain billing schedules and provide complete and accurate billing information to support ASC 606 revenue recognition and month-end close.
• Understand and appropriately distinguish between customer billing, cash collection, deferred revenue/contract liabilities, unbilled amounts, and recognized revenue.
• Assist Accounting with reconciliations between customer contracts, billing schedules, invoices, the AR subledger, and related general ledger accounts.
• Identify contract changes, billing adjustments, credits, service commencement changes, or other developments that could affect revenue accounting and accelerate them to the appropriate Accounting personnel.
• Support month-end accruals and reconciliations for unbilled receivables, customer prepayments, deferred billings, and other billing-related balances, as assigned.
• Prepare supporting schedules and documentation for internal and external audit requests related to customer contracts, billing, accounts receivable, and revenue.

• Monitor accounts receivable aging and proactively contact customers regarding outstanding balances through professional written and verbal communications.
• Research and resolve billing discrepancies, payment disputes, short payments, unapplied cash, credits,…