Razorpay checkout
UPI, cards, net banking and wallets in your website or app.
Payment gateway integration for websites and apps
Payments have to be correct every time. I integrate payment gateways into websites, web apps and Flutter mobile apps, including the server-side part many integrations get wrong: verifying payments with signatures and webhooks before an order is marked as paid.
I've integrated Razorpay in a production food-ordering platform, from app checkout to backend order updates.
- Razorpay
- Webhooks
- Laravel
- PHP
- FastAPI
- Node.js
- Flutter
- MySQL
- PostgreSQL
Payment gateway integration
Payment work I do
Server-side verification
Signature and webhook verification, so orders can't be faked.
Subscriptions & recurring billing
Plans, renewals and failed-payment handling for SaaS and memberships.
Refunds & reconciliation
Refund flows and matching payments to orders in your admin panel.
Flutter in-app payments
Native payment flow in Android and iOS apps.
Fixing broken integrations
Missing webhooks, duplicate orders and payment-status mismatches.
Deliverables
What's included
- Checkout on web and/or app
- Backend order and payment records
- Webhook handling and signature checks
- Refunds and status updates
- Test mode → live mode go-live checklist
- Documentation for your team
Get a development estimate
Tell me what you're building.
Share your idea or requirements and I'll reply with next steps and an estimate.
Discuss your project ↗Process
How the project works
- 01
Discovery call
We talk through your goals, users and must-haves. You get honest advice, including when something isn't worth building.
- 02
Scope & estimate
A written scope with milestones and a fixed quote or clear hourly estimate, so there are no surprises.
- 03
Build in milestones
Regular demos and test builds you can try, with feedback built into each milestone.
- 04
Test, deploy & launch
Testing, deployment to your servers or stores, and a launch checklist.
- 05
Support & growth
Fixes, updates and new features after launch, whenever you need them.
Portfolio
Relevant work
Food-tech platform
OneFoodDialer
- Platform
- Mobile · web backend
- My role
- App, backend, payments, API gateway
- Stack
- Flutter · Laravel · Razorpay · Kong
- Publisher
- Futurescape Technologies Pvt Ltd
Payment gateway integration pricing
Pricing approach
Every project is quoted after a short discovery call, as a fixed price for a clear scope or an hourly/monthly estimate for ongoing work. The main things that affect payment gateway integration cost:
- One-time payments vs subscriptions
- Web, app, or both
- Existing backend or new
- Refund and reconciliation needs
- Number of payment flows (orders, wallets, payouts)
Payment gateway integration FAQ
Common questions
Do you integrate Razorpay in Flutter apps?
Yes. I integrate Razorpay checkout in Flutter apps and verify every payment on the backend before confirming the order.
Why do I need webhooks if checkout already works?
Because users close apps, networks drop and callbacks fail. Webhooks let your server confirm the payment independently, which prevents unpaid orders and missing ones.
Can you fix my existing payment integration?
Yes. I'll audit the flow, fix verification and status handling, and add logging so issues are traceable.
Related services
Often combined with
Start your project.
Freelance payment gateway integration for startups and businesses in India and worldwide.