ComfyUI

Full-stack Engineer

• Build reliable metering for GPU compute and partner model APIs
• Handle delayed events, retries, and partial failures so billable events are recorded once and attributed correctly
• Improve checkout, subscriptions, credit top-ups, plan and seat changes, prorations, refunds, and failed-payment recovery
• Keep Stripe, Metronome, and application state consistent across late events and partial system failures
• Build automated reconciliation across usage records, invoices, payments, and credit balances
• Detect discrepancies, provide audit trails, and safely recover missing credits after successful payments
• Own production reliability and turn incidents into lasting improvements
• Build reusable pricing and entitlement systems for individual creators, teams, and enterprise customers
• Improve spend controls and detection of suspicious usage, payment fraud, and credit abuse
• Partner with Product and frontend engineers on billing experiences
• Build tools for Support, Sales, and Finance to investigate charges and resolve issues safely

Staff Software Engineer, Billing