I will fix javascript and react, nodejs bugs quickly and perfect

M
marcus__1406
M
marcus__1406
Marcus O
Parte de la información aparece en idioma inglés.
fix javascript and react, nodejs bugs quickly and perfect
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fix javascript and react, nodejs bugs quickly and perfect

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Is your JavaScript, React, or Node.js application not working properly?



Dealing with errors, broken features, failed API requests, or unexpected behavior? I can help you find the root cause and get your application working again.

I can fix:

  • JavaScript and React bugs
  • Node.js and Express backend issues
  • REST API and integration problems
  • Authentication and authorization errors
  • Database and backend issues
  • Console and runtime errors
  • State management problems
  • Performance issues
  • Code that needs refactoring


I don't just patch the visible error. I'll investigate the problem, identify the cause, implement the fix, and test the affected functionality.


Whether it's a small JavaScript bug, broken React component, failing API, or Node.js backend issue, I'll help get your project back on track.


Send me the error message, screenshot, or relevant code, and let's find the problem.

  • Plataforma

    • Personalizado

  • Tipo de sitio web

    • Tienda de e-commerce
    • Negocios
    • Landing page
    • Blog
    • Porfolio

  • Lenguaje de programación

    • JavaScript
    • HTML y CSS
    • bootstrap
    • React
    • Otros
Respeta los derechos de terceros

Recuerda que incluir temas, plantillas o cualquier otro elemento que viole los derechos de terceros o las leyes aplicables en los trabajos entregados va en contra de las políticas de Fiverr. Puedes ver más información en Guía para la creación digital responsable.

Conoce a Marcus O

Marcus O

Backend Focused Full Stack Developer, APIs, Authentication and Databases

  • DeNigeria
  • Miembro desdemay 2022
  • Responde aprox. en:4 horas

  • Idiomas

    Inglés, Alemán, Francés
Need a reliable backend for your web application? I'm Marcus, a backend-focused full stack developer specializing in API development, authentication, databases, and backend bug fixing. I help businesses and developers build REST APIs, implement secure authentication, integrate third-party services, and work with PostgreSQL, MySQL, and MongoDB. Whether you're building a new application or fixing an existing backend, I focus on clean, reliable, and maintainable solutions. Send me a message and let's discuss your project.

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