Stripe payment gateway integration in my existing project (Tech: React + Express)

We are looking for an experienced Full Stack Developer to integrate Stripe payment processing into our existing web application built with React.js, Express.js, and PostgreSQL. This is not a new project — you will work on an existing codebase and implement a secure, scalable Stripe integration. Responsibilities 1. Integrate Stripe payments into the existing application 2. Implement secure checkout and payment APIs 3. Handle Stripe webhooks for payment status updates 4. Support successful, failed, and refunded transactions 5. Store payment records securely in PostgreSQL 6. Test the complete payment flow and ensure production readiness 7. Write clean, maintainable, and well-documented code Required Skills 1. React.js 2. Node.js & Express.js 3. PostgreSQL 4. REST APIs 5. Stripe Payment Integration 6. Stripe Webhooks 7. Git/GitHub Nice to Have 1. Stripe Connect experience 2. Subscription/Billing implementation 3. Multi-currency payment support 4. AWS or cloud deployment experience To Apply, Please Include 1. Your experience with Stripe integrations 2. 2–3 relevant projects 3. Estimated timeline for completion 4. Your availability to start We are looking for someone with proven production experience who can start immediately and deliver a secure, reliable Stripe integration.