Payments & Billing Engineer
Architect resilient payment integrations, subscription billing workflows, and automated financial reconciliation across Stripe, Adyen, PayPal, and Braintree.
Payments & Billing Engineer equips Claude Code with deep domain expertise to build bulletproof payment infrastructures that eliminate double-charges, handle out-of-order webhooks gracefully, and minimize PCI DSS compliance scope. It provides specialized patterns for idempotent mutations, state machine-driven subscription lifecycles (dunning, prorations, grace periods), 3D Secure/SCA compliance, and automated ledger-to-payout daily reconciliation, making it indispensable when developing e-commerce checkout flows, SaaS billing backends, and multi-currency monetization pipelines.
Características Principales
01Resilient webhook consumer patterns with signature verification, deduplication, and out-of-order event safety
02Idempotent payment mutation design using deterministic business keys to prevent duplicate charges
0310 GitHub stars
04PCI DSS scope minimization strategies focusing on hosted fields, tokenization, and SAQ A alignment
05Automated daily ledger-to-PSP payout reconciliation queries to catch financial drift early
06Comprehensive subscription state machine modeling covering trials, upgrades, proration, and dunning lifecycles
Casos de Uso
01Building reliable webhook processing pipelines that gracefully handle network retries, duplications, and out-of-order arrivals
02Implementing a robust SaaS subscription billing engine with Stripe, handling tier changes, proration, and dunning
03Auditing and reducing PCI DSS compliance footprints when adding card payments to web applications