Payment Gateway Integration Services
Payment gateway and local method integration with fraud controls, retries, and reconciliation handled properly.
- Local payment methods matched to each market
- Payment state accurate through webhook handling
- Failed payments retried with dunning
- Reconciliation catching mismatches early
- Stripe
- PayPal
- Razorpay
- Node.js
- PHP
- PostgreSQL
- Webhook
- Source of truth
- Multi-method
- Per-market coverage
- 3-8 wk
- Typical integration
What payment gateway integration covers
Taking a card payment is straightforward. Handling everything around it — failures, retries, refunds, chargebacks, reconciliation, and regional methods — is where the actual work sits.
Local methods affect conversion
Card-only checkouts lose sales in markets where customers expect UPI, iDEAL, Klarna, or wallets. Method availability is frequently a larger conversion factor than checkout design in those markets, and it is a cheap fix.
Webhooks are the source of truth
Payment state changes asynchronously — captures, disputes, refunds, subscription events. Systems that rely on the browser redirect to confirm payment produce mismatched orders. We implement webhook handling with idempotency and retries so records stay correct.
Reconciliation prevents silent errors
Gateway records, order records, and accounting must agree. We build reconciliation so mismatches surface as alerts rather than being discovered at month end.
What we deliver
Key features and capabilities of our payment gateway integration work.
Gateway integration
Stripe, PayPal, Razorpay, and regional providers.
Local payment methods
UPI, wallets, bank transfer, and buy-now-pay-later per market.
Webhook handling
Idempotent processing of asynchronous payment events.
Subscription & recurring billing
Renewals, proration, and dunning for failed payments.
Reconciliation & reporting
Gateway, order, and accounting records kept in agreement.
How the engagement runs
A clear sequence with a visible output at every step — so you always know where the project stands.
- 01
Discovery & scoping
We map requirements, users, integrations, and constraints, then agree scope and a fixed quote before work starts.
- 02
Architecture & design
Technical architecture and user flows are agreed and prototyped before implementation begins.
- 03
Build & review
Development in reviewable increments, with a staging environment you can see and comment on throughout.
- 04
Launch & support
Performance and security checks, documented handover, deployment, and an agreed support window after go-live.
Technologies & tools
Chosen per project for fit, maintainability, and your existing stack.
- Stripe
- PayPal
- Razorpay
- Node.js
- PHP
- PostgreSQL
Industry applications
Sectors where we most often apply this service.
- E-Commerce & Retail
- SaaS & Technology
- Healthcare
- Real Estate
- Finance & FinTech
- Education
- Travel & Hospitality
- Professional Services
What's included at each level
Every engagement is scoped to your needs; these tiers show how scope typically grows.
| What's included | Starter | Growth | Enterprise |
|---|---|---|---|
| Gateway integration | Included | Included | Included |
| Webhook handling | Included | Included | Included |
| Local payment methods | Not included | Included | Included |
| Subscription billing & dunning | Not included | Included | Included |
| Reconciliation & reporting | Not included | Not included | Included |
Payment Gateway Integration: common questions
Which gateway should we use?
Stripe for most international businesses — excellent APIs and broad method support. Razorpay or similar where local methods and settlement matter more. Frequently the answer is more than one, routed by market.
Do you store card details?
No, and neither should you. Card data goes directly to the gateway via tokenisation, which keeps sensitive data out of your systems and your PCI scope minimal. We would decline to build anything that stored raw card numbers.
More from E-Commerce Development
Ready to talk about payment gateway integration?
Tell us what you need. We reply within one business day with questions or a call slot — and a fixed, written proposal after.