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I will integrate payment gateways and webhooks in fastapi
Ennya P
About this gig
Are you looking for a secure, seamless payment gateway integration for your web application? I will integrate PayPal, Stripe or other into your stack with clean, production-ready code.
Whether you need a quick fix for an existing checkout or a fully automated payment architecture with webhooks, I've got you covered.
What I Can Do For You:
- Payment Gateway Integration: PayPal REST API, Mercado Pago, or Stripe.
- Backend Integration: FastAPI (Python), Node.js, or Express API setup.
- Frontend Integration: React / Next.js payment buttons and checkout modals.
- Webhook Implementation: Asynchronous handling for payment events (charge succeed, order captured, refund).
- Database Synchronization: Automatic stock adjustment, order state updates, and status tracking in SQL/NoSQL databases.
- Sandbox & Live Testing: Thorough end-to-end testing in developer mode before going live.
Why Choose Me?
- Clean & Scalable Code: Well-documented API logic ready for production.
- Security First: Safe credential management (environment variables, secure token handling).
- Clear Communication: Fast responses and regular updates on progress.
Please send me a message so we can choose the best package for you!
Get to know Ennya P
Ennya P
Backend Developer Secure REST APIs, Payment Gateways and Automations
- FromArgentina
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Spanish
Hi! I’m a Backend Developer specializing in building fast, secure, and scalable REST APIs using Python and FastAPI.
I help businesses and startups build and connect their backend systems:
Custom REST API Design & Architecture
Payment Gateways (PayPal, Stripe) & Real-time Webhooks
Automated Background Tasks (PDF generation, Email notifications)
Database Modeling (PostgreSQL, SQLAlchemy) & Authentication
My priority is delivering clean, well-documented code (Swagger/Postman) that is ready for production. Let’s bring your project to life!
My Portfolio
FAQ
Q: What information do I need to provide to start?
You will need to provide your project details, tech stack info, and API Client IDs/Secrets for the developer/sandbox mode of your payment provider.
Do you test the integration before making it live?
Absolutely. Every integration is thoroughly tested using Sandbox/Test credentials to ensure payments, errors, and webhooks function properly before live deployment.
Can you integrate Mercado Pago for Latin American businesses?
Yes, I integrate Mercado Pago SDKs and APIs for seamless checkouts in Argentina, Mexico, Colombia, Chile, and other supported countries.
