I will integrate stripe api, fix payment gateway, webhook, paypal checkout billing


About this gig
Are you struggling with Stripe API errors, failed payments, webhook issues, or broken checkout flows?
Or do you need a reliable payment system built from scratch using Stripe or PayPal?
I help businesses, SaaS founders, and startups build secure, scalable, and fully automated payment systems that work flawlessly.
What I Can Do For You:
- Stripe API integration (one-time & subscription payments)
- Fix Stripe errors, failed payments, and webhook issues
- Build secure webhook systems (idempotent, no duplicates)
- PayPal integration & checkout setup
- Custom billing logic (subscriptions, renewals, access control)
- Payment gateway integration for web apps & SaaS
- Debug and optimize existing payment flows
- Connect payments to your database, CRM, or backend
️Advanced Features You'll Get:
- Secure API integration (OAuth, tokens, validation)
- Webhook reliability (retry handling, logging, event tracking)
- Subscription lifecycle handling (active, canceled, past_due)
- Access control logic (payment access automation)
- Clean, scalable backend structure
- Real-time payment status updates
Every project is different.
Message me before ordering so we can define the best solution for your system.
Get to know Arch Rafael
Licensed Structural Engineer, PE Stamps and Permit Drawings USA Ready
- FromUnited States
- Member sinceMay 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German
FAQ
Can you fix Stripe webhook errors or duplicate events?
Yes. I implement proper webhook handling with idempotency to prevent duplicate processing.
Do you support subscription billing and recurring payments?
Absolutely. I handle full subscription lifecycle including renewals, cancellations, and failed payments.
Can you integrate Stripe or PayPal into my existing app?
Yes. I can connect payment systems into your current backend, frontend, or SaaS platform.
How do you secure payment data and APIs?
I follow best practices including validation, token security, and safe webhook verification.
What if my payment flow is already broken?
No problem. I specialize in debugging and fixing complex payment and API issues.
