I will build a secure fintech payments backend integration

H
hasnaat93
H
hasnaat93
Hasnat Ahmed
Algumas informações são exibidas no idioma inglês.
build a secure fintech payments backend integration
Tela Inteira
build a secure fintech payments backend integration
Tela Inteira
Tela Inteira
build a secure fintech payments backend integrationbuild a secure fintech payments backend integrationbuild a secure fintech payments backend integration

Sobre este Serviço

I help businesses integrate secure, production-ready payment and fintech backends into their existing products. Whether you need a single payment gateway connected (Stripe, PayPal, Razorpay) or a full transaction platform with ledgers and reconciliation, I build it directly into your current stack. What I deliver: payment gateway integration and checkout flows, webhook handling for payment events, refunds/chargebacks logic, transaction database design, fraud/risk checks, and clean API documentation. Tech stack: Node.js/Express, Java, Python, PostgreSQL/MySQL, REST APIs, Stripe/PayPal/Razorpay SDKs. Security is non-negotiable for money-moving systems - I follow PCI-DSS-aware practices, idempotent transaction handling, and add logging/alerting for production trust. You get full source code, documentation, and post-delivery support. Message me with your stack and what you need connected.

  • Especialidade

    • Desempenho
    • Segurança
    • Banco de Dados

  • Linguagem de programação

    • JavaScript

  • Estrutura de front-end

    • React.js

  • Estrutura de back-end

    • Express.js
    • Node.js

Conheça mais sobre Hasnat Ahmed

Hasnat Ahmed

Full Stack Spring Boot and AI Automation Developer

5,0(19)
  • A partir dePaquistão
  • Membro desdemar. de 2022
  • Responde em aprox.:1 hora
  • Última entrega7 meses

  • Idiomas

    Inglês
Hi, I am Hasnat Ahmed, a full-stack and backend developer with 2+ years of experience building web applications, backend systems, and AI-powered automation. I specialize in Spring Boot and Java microservices, MEAN/MERN stack development, and AI/chatbot automation integration. Core skills: Java, Spring Boot, Node.js, React, Angular, Python, REST APIs, and databases (MySQL, MongoDB, PostgreSQL). I deliver end-to-end projects with clean code and clear communication. Quality and your time are my top priorities.

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