I will integrate payment gateway in java spring boot

S
smonir
S
smonir
Manirul
integrate payment gateway in java spring boot
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integrate payment gateway in java spring boot

About this gig

Payment integration expert | 13+ years | 100K+ daily transactions in production.

I integrate payment gateways into Java Spring Boot apps the way real fintech companies do not just happy-path tutorial code.

Gateways: Stripe · PayPal · Square · Razorpay · Braintree · Authorize.Net · bKash · Nagad · Rocket

What you get: Complete Spring Boot integration PCI compliance considerations Webhook handler & signature verification Idempotency keys no duplicate charges Retry logic with exponential backoff Circuit breaker pattern (Resilience4j) Refund & chargeback handling Automated reconciliation logic Full audit trail & transaction logging Edge case error handling Unit & integration tests Postman collection included

Most developers miss the hard parts webhook verification, idempotency, partial failures, race conditions & timeouts. I build systems that don't lose money or double-charge customers.

Production highlights:

  • 5+ gateways in one e-commerce platform
  • Payment orchestration with reconciliation
  • 100K+ daily transactions handled
  • 99.9% reliability via circuit breaker & retry

Message me first to discuss your gateway, use case & requirements. I'll provide an exact scope and timeline.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Testing procedures

  • Programming language

    • Java

  • Frontend framework

    • Bootstrap
    • jQuery
    • Next.js
    • React.js

  • Backend framework

    • Spring
    • Other

Get to know Manirul

Manirul

Senior Java Spring Boot Engineer 13 plus years Microservices Kafka Payment

5.0(7)
  • FromBangladesh
  • Member sinceApr 2017
  • Last delivery1 year

  • Languages

    English
✅ About Me I’m a Senior Java Backend Engineer with 13+ years of professional experience specializing in Java, Spring Boot, and scalable backend systems. I design and implement microservices, REST APIs, and secure architecture for fintech, e-commerce, and enterprise-grade platforms. I have hands-on experience in event-driven design (Kafka), high-performance caching (Redis), NoSQL integration (MongoDB), and modern DevOps practices (CI/CD, Docker, Kubernetes) to ensure seamless deployment and scalability.

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