Staff Billing Engineer - Metering & Payments

ComfyUI; San Francisco (CA); On-site; USD 160,000 - 240,000; Full time

Job summary

ComfyUI, SF-based, is seeking a backend-focused billing engineer to own usage metering, payments, credits, and subscriptions. You will drive reliability across checkout, invoicing, and refunds while enabling flexible pricing and new models for creators, teams, and enterprises.

You will work with Stripe, Metronome, Temporal, and a modern stack (Go, PostgreSQL, Redis) to evolve a billing platform that scales with growing GPU compute and model API usage.

Qualifications

• Experience building and operating billing or payments systems in production with ownership of usage metering, credits, or consumption-based pricing.
• Direct experience integrating Stripe and handling subscriptions, invoices, webhooks, and payment failures beyond the happy path.
• Ability to reason about money in distributed systems: idempotency, concurrency, reconciliation, rounding, recovery after partial failure.
• Strong backend engineering skills with relational data modeling and reliable APIs.
• Capacity to explain technical tradeoffs to Finance, Product and Support.

Responsibilities

• Capture usage reliably and build metering for GPU compute and partner model APIs, ensuring every billable event is recorded once and attributed correctly.
• Own the payment lifecycle: improve checkout, subscriptions, credits, plan/seat changes, prorations, refunds, and failed-payment recovery; keep systems consistent when events arrive late.
• Reconcile charges, payments, and credits with automated checks and audit trails; recover safely when credits don’t arrive.
• Make new pricing easier to ship by building reusable pricing and entitlement systems for creators, teams, and enterprise customers.
• Limit financial abuse by improving spend controls and detection of fraud across checkout and usage; collaborate with Support and Finance on disputes.
• Provide clear answers to customers and teammates; partner with product and frontend engineers on billing experiences and tools for Support, Sales and Finance.

Job description

ComfyUI, SF-based, is seeking a backend-focused billing engineer to own usage metering, payments, credits, and subscriptions. You will drive reliability across checkout, invoicing, and refunds while enabling flexible pricing and new models for creators, teams, and enterprises.

You will work with Stripe, Metronome, Temporal, and a modern stack (Go, PostgreSQL, Redis) to evolve a billing platform that scales with growing GPU compute and model API usage.