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Senior Billing Manager

Retell AI - Redwood City, CA, United States - In-office - posted 2026-10-14

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Salary: USD 190,000 - 230,000 / annual

Retell AI is a voice AI platform transforming customer experience for enterprises like CVS/Aetna, American Airlines, Lenovo, and Grab. The company has scaled from $5M to $80M ARR in under two years and is now valued at over $1.5B, backed by Y Combinator and other leading investors. You will be Retell's first billing owner, building the accounts receivable function from zero to one. This is a high-impact role where you'll establish the processes, systems, controls, and eventually lead a team that ensures invoices go out on time and cash comes in predictably. Key responsibilities: - Build the enterprise AR process from scratch: invoicing, collections cadence, and cash application - Own collections for enterprise accounts: manage aging, DSO, and disputes - Set up invoicing for large contracts with committed-spend and usage-based terms - Collaborate with Sales, Customer Success, and customers' AP teams on escalations - Select and implement AR and billing tools; automate processes where possible - Guide contract accountants and report on AR health You'll work in a fast-growing environment where you can ship v1 in a week rather than plan for a month. The role requires comfort moving between spreadsheets and customer calls, and the ability to own ambiguous problems. Retell values zero-to-one builders who can demonstrate collections results (lower DSO, fewer aged balances) and sound judgment in enterprise customer disputes. The company offers relocation support and is open to sponsoring work authorization (H-1B, TN, L-1, E-3, F-1 OPT/CPT). Benefits include 100% medical/dental/vision coverage, $70/day DoorDash credit, $200/month wellness reimbursement, $300/month commuter reimbursement, $75/month phone reimbursement, and $50/month internet reimbursement. REQUIREMENTS: Must have: - 6+ years in AR, billing, or collections, including enterprise B2B - Demonstrated experience building an AR or collections process from scratch at a high-growth SaaS or usage-based company - Hands-on proficiency with billing and finance tools (e.g., Stripe, NetSuite, QuickBooks) - Confidence working with large customers' AP and procurement teams - Solid accounting fundamentals: AR aging, cash application, reconciliations Nice to have: - Experience with usage-based or committed-spend contracts - CPA or audit experience - First finance ops hire at a startup

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