I'll integrate Stripe into your SaaS end to end — Checkout, subscriptions, customer portal, and webhook handling for clean billing state. You get production-ready payments without losing weeks to edge cases. Includes: Checkout + subscription setup, webhook handlers (with retries on transient 5xx), customer portal, and a short handoff doc. Built recently for showkit.dev. Fixed scope, 50% deposit upfront, delivered in 5 days.