I will fix HTML CSS javascript react nodejs bugs professionally

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Leo Tillier
Parte de la información aparece en idioma inglés.

Acerca de este Servicio

Is your website not working as expected? I can help you quickly identify and fix bugs in your HTML, CSS, JavaScript, React, or Node.js project.


Whether it's a broken feature, a layout issue, a JavaScript error, or a backend problem, I will work to resolve it with clean, maintainable code.


Services I offer


HTML & CSS bug fixes

JavaScript debugging

React troubleshooting

Node.js & Express bug fixing

API integration issues

Responsive design fixes

UI/UX improvements

Performance optimization

Code cleanup and refactoring

Cross-browser compatibility fixes


Why choose me?


Clean and well-structured code

Fast and professional communication

Reliable solutions

Attention to detail

Modern development practices


Please contact me before placing an order if you are unsure which package best fits your project. I will review your issue and recommend the most suitable option.


I look forward to helping you get your project back on track!

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 Leo Tillier

Leo Tillier

Full Stack and Desktop Developer

  • DeFrancia
  • Miembro desdemay 2025
  • Responde aprox. en:1 hora
  • Idiomas

    Francés, Inglés
Hi, I’m Leo, a French full-stack and desktop developer. I build responsive websites, secure backend systems, REST APIs and Windows applications using JavaScript, Node.js, Python, C#, .NET and SQL. I focus on clean architecture, maintainable code, performance and clear communication. Please contact me before ordering so I can review your requirements and recommend the right solution.

Mi porfolio