/Integration

Payment Gateways & API Engineering

Service Overview

I build the invisible layer that makes everything connect reliably — complex Stripe flows, subscription billing, local payment gateways, third-party API orchestration, and real-time webhooks. These are not demo integrations. They are production-tested across 10+ commercial products handling thousands of live daily transactions, where failure is not an option.

Key Features

/ Stripe Terminal, subscription billing, and invoice automation
/ SSLCommerz and local payment gateway integration
/ Third-party API orchestration and webhook event handling
/ Real-time notification systems and event broadcasting
/ Secure API authentication with JWT and Laravel Sanctum
/ Idempotency handling to prevent double charges or duplicate events

Tools & Technologies

#Stripe#SSLCommerz#REST API#Webhooks#Node.js#Laravel

My Process

01. Integration Mapping

Documenting all data flows, webhook events, failure scenarios, and edge cases before writing any implementation code.

02. Secure Implementation

Building idempotent, fault-tolerant integrations that handle network failures, retries, and edge cases gracefully without data loss.

03. Testing & Monitoring

End-to-end testing of all payment flows and webhook events, with structured logging and alerting in production.

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