Payment → Verify → Process → Confirm.
A slow checkout or unverified browser redirect destroys transaction conversion and creates ghost orders. We engineer hardened, server-side payment pipelines with cryptographic HMAC-SHA256 signature verification, instant UPI intent, and asynchronous webhook reconciliation.
Where Most Online Payment Integrations Fail
Flawed payment code leads to lost orders, ghost balances, customer chargebacks, and checkout abandonment.
Lost Pending Orders
If a buyer closes their mobile browser before the bank redirects back to your success page, the payment is captured but the order never triggers.
Client-Side Manipulation
Amateur integrations passing price amounts directly from HTML form fields allow malicious users to alter ₹5,000 items to ₹1 in Developer Tools.
Slow UPI Intent Handoff
Requiring mobile shoppers to manually type their Virtual Payment Address (VPA) instead of deep-linking Google Pay or PhonePe makes many shoppers abandon the payment.
Missing Gateway Settlement Logs
Lack of automated webhook syncing creates manual reconciliation headaches at month-end when trying to match bank deposits against GST invoices.
What EthicsComputer Integrates
From domestic Indian UPI AutoPay mandates to international multi-currency Stripe checkouts.
Razorpay & Cashfree Checkout
Direct integration supporting seamless UPI intent, Credit/Debit cards with tokenization, Net Banking, and cardless EMI.
Stripe Multi-Currency Checkout
Global payment gateway accepting USD, EUR, GBP, and international cards with 3D Secure 2 authentication and automated foreign currency conversion.
Dynamic UPI QR Code Generation
Generate instant transaction-specific QR codes on desktop checkout and billing kiosk screens with automatic polling for payment confirmation.
UPI AutoPay & Recurring Mandates
Automated recurring subscription debits under RBI e-mandate rules via UPI AutoPay, eliminating manual monthly invoice follow-ups.
Server-Side Webhook Receivers
Asynchronous background webhook endpoints that process payment events with guaranteed idempotency, preventing double-crediting of customer wallets.
Split Settlements & Vendor Payouts
Marketplace platforms with automated commission deduction and instant vendor account settlements via Cashfree/Razorpay Payout APIs.
Cryptographic Integrity & Fraud Defense
Financial transactions require absolute cryptographic verification. We engineer multiple defense layers ensuring that not a single rupee can be falsified.
Supported Payment Gateways & SDKs
We maintain direct SDK integration experience across leading Indian and global payment processors.
13 services · Payments & FinTech
Every Payment Gateway & FinTech service we offer
Razorpay, Cashfree, PayU, Easebuzz and UPI integrations, payouts, BBPS/AEPS and reconciliation systems built to be audit-ready.
Browse all practicesCovered on this page: Payment Gateway Integration
Frequently Asked Payment Questions
Which payment gateway should our business choose in India?
For domestic Indian transactions, Razorpay, Cashfree and PayU are widely used and support UPI, cards and net banking; compare their current pricing, settlement cycles and documentation for your business. For international cards and currencies, check which gateways currently onboard Indian businesses for international payments and what documents they require.
How do you prevent payment fraud and amount tampering?
We enforce strict server-side transaction generation and cryptographic HMAC-SHA256 signature verification on all webhook callbacks. Transaction amounts are never trusted from the client-side browser.
Can we accept recurring monthly payments via UPI in India?
Yes. We integrate UPI AutoPay and e-Mandate protocols that allow customers to authorize recurring monthly or annual subscription debits directly from their UPI apps (Google Pay, PhonePe, Paytm).
What happens if a customer closes their browser immediately after paying?
Because our architecture relies on asynchronous server-to-server (S2S) webhooks rather than client-side redirects, the gateway notifies the backend directly. The order is fulfilled, access is granted, and confirmation is sent even if the user closed their tab.
Automated ledger reconciliation, bank statement syncing, and corporate compliance.
Custom e-commerce platforms, multi-tenant billing engines, and transactional databases.
Lightning-fast mobile checkout interfaces engineered for sub-second Core Web Vitals.
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Tell us what you're trying to build, improve or fix. We'll start with the technical requirement.
