I will build or fix your node js rest API with express

A
antoniosimental
A
antoniosimental
AntonioSimental
build or fix your node js rest API with express
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build or fix your node js rest API with express
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build or fix your node js rest API with expressbuild or fix your node js rest API with express

About this gig

Hi! I'm a backend developer specialized in Node.js, Express.js, and REST API development.


I will build, fix, or optimize your Node.js REST API using clean, scalable, and production-ready code. My goal is to help you create secure, fast, and reliable backend systems for your applications.


Services I offer:

  • Custom REST API development with Node.js and Express.js
  • Bug fixing and backend troubleshooting
  • Database integration (MongoDB, MySQL)
  • JWT authentication and API security implementation
  • Backend performance optimization and refactoring
  • API debugging and error fixing


I focus on clean architecture, scalability, performance, and maintainability so your backend can support real-world production workloads.


I have experience working with modern backend development practices and writing well-structured, readable, and documented code.


Before placing an order, please message me to discuss your project requirements and choose the best package for your needs.


Let's build a secure, scalable, and high-performance backend for your project.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Source control

  • Programming language

    • JavaScript

  • Frontend framework

    • Next.js
    • React.js

  • Backend framework

    • Express.js
    • Next.js
    • Node.js

Get to know AntonioSimental

AntonioSimental

Node js Developer for REST APIs and Backend Fixes

  • FromMexico
  • Member sinceFeb 2026

  • Languages

    English, Spanish
JavaScript developer focused on building and improving backend systems. I specialize in REST APIs using Node.js, database integration, and authentication systems. I also develop responsive front-end applications with React and build cross-platform desktop apps using Electron. Clean structure, clear communication, and reliable delivery. Feel free to message me before ordering.

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