Accounts Receivable & Commercial Operations Coordinator

About the role We are seeking a proactive and detail-oriented Senior AR & Commercial Operation Co to take full ownership of our end-to-end billing, invoice delivery, payment collection, and commercial data auditing. Stationed at our Bangkok office, you will handle hands-on billing operations while acting as an internal controller to cross-check project statuses, monitor cost inputs, and support our CFO in cash flow management. Key responsibilities Execute Billing Operations: Prepare, issue, and deliver Invoices, Tax Invoices, Billing Notes (ใบวางบิล), and Official Receipts to customers according to project milestones and payment terms. Payment Collection & Follow-up: Actively follow up with client procurement/finance departments to collect payments, clear overdue balances, and ensure zero-missed billing timelines. Tracker Management: Maintain and update the daily Master Billing & Collection Tracker (Invoice/Billing numbers, issue dates, due dates, payment status, and accumulated collections). Verify sales orders, POs, delivery receipts, and credit terms before initiating the billing process. Calculate sales commissions based on actual cash collected. Act as an internal controller cross-checking project completion statuses between Sales Support and the Factory. Monitor and follow up with the Plant Manager to ensure actual project costs are accurately recorded in the Master Tracker. Audit document completeness and flag discrepancies or delayed billings to management immediately. Prepare weekly Cash Collection Reports, AR Aging summaries, and Pending Cost update statuses for the Fractional CFO and executive team. Provide weekly operational data to support Cash Flow Forecasting.