Software Engineer, Billing

Job description

Our mission is to automate coding. The first step in our journey is to build the best tool for professional programmers, using a combination of inventive research, design, and engineering. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truth-seeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code. ABOUT THE ROLE We're hiring a Software Engineer, Billing to evolve the systems that power how Cursor charges and reconciles revenue across millions of developers and enterprise teams. You will work across the billing stack — usage metering pipelines, subscription and entitlement systems, payment integrations, and the ledger layer — to make billing accurate, scalable, and transparent. This is a deeply technical IC role. It is not a finance ops role, and it is not a backend generalist role wearing a billing hat. WHAT YOU’LL DO - Implement usage and billing systems changes end-to-end, from updates in the UI and raw usage events at the edge to invoiced amounts in Stripe, including the metering pipeline, aggregation logic, entitlement enforcement, and ledger. - Evolve our ledger system that serves as the source of truth for customer balances, credits, overages, and adjustments — with the correctness guarantees that financial systems require. - Integrate deeply with Stripe including subscriptions, usage records, invoices, webhooks, and edge cases like mid-cycle plan changes, prorations, and failed payment recovery. - Build billing APIs and internal tooling that product, finance, and customer success teams depend on to query customer state, issue credits, and investigate billing anomalies. - Improve observability across the billing pipeline — metering lag, reconciliation discrepancies, invoice accuracy — so the team can quickly detect and debug billing regressions. - Partner with product, infrastructure, and finance teams to ship new pricing models with confidence and minimal operational risk. - You will own usage & limits across the product family, payments (stripe + daily jobs), grants & promotions, ledger, and internal data insights. You will be a technical authority on billing correctness and scale. - You will not own tax compliance, or general finance infrastructure unless it intersects directly with the billing system. - You will not be a backend generalist who contributes to billing occasionally. This is the core of your scope. - Revenue accuracy is part of the job, but the goal is to build systems with enough correctness and observability that billing is boring — not to manually reconcile every edge case. YOU MAY BE A FIT IF - You’ve shipped a usage-based billing system in production and have opinions on metering architecture, idempotency, and exactly-once semantics. - You’ve integrated deeply with Stripe, understand its data model, and have dealt with erroring webhooks. - You’ve built or maintained a financial ledger and understand why it’s required. - You care about correctness and making sure customer’s don’t have to manually review their invoices. - You can hold the tension between "move fast" and "do not lose revenue or trust." - You feel comfortable shipping features end-to-end - scaling up infrastructure to tweaking a UI component. #LI-DNI