I will fix nestjs backend bugs, API errors, and performance issues

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eng_rezayee
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eng_rezayee
Eng Rezayee
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fix nestjs backend bugs, API errors, and performance issues
Tela Inteira
fix nestjs backend bugs, API errors, and performance issues

Sobre este Serviço

Bug-Fixing Description (NestJS / ExpressJS)

If your NestJS or ExpressJS backend is broken, throwing errors, or behaving incorrectly, I will debug and fix the issue efficiently using clean and safe practices.


What I fix:

  • NestJS / ExpressJS runtime & logic errors
  • Broken or failing REST API endpoints
  • Authentication & authorization bugs (JWT / session)
  • Database issues (MySQL, PostgreSQL, MongoDB)
  • Validation, exception handling, and response errors
  • Performance bottlenecks and misconfigurations
  • Deployment-related issues (Docker, VPS, Render, Railway)

What you get:

  • Clean, tested bug fixes
  • Clear explanation of the root cause
  • Updated source code (no hacks)
  • Suggestions to prevent the issue in the future

Why choose me:

  • Backend developer with real debugging experience
  • Fast, honest communication no guessing
  • I fix the problem, not just silence the error

Note:

Please message me before ordering with error logs, screenshots, or repository access.

Bug scope must be reviewed before starting.

  • Linguagem de programação

    • TypeScript

  • Especialidade

    • Algoritmos e estruturas de dados
    • Depuração
    • Segurança
    • Banco de Dados
    • Fonte de controle

  • Estrutura de front-end

    • React.js
    • bootstrap
    • Tailwind CSS
    • Outros

  • Estrutura de back-end

    • Django
    • Laravel
    • Express.js
    • Node.js
    • Outros

Conheça mais sobre Eng Rezayee

Eng Rezayee

Full Stack Developer

5,0(3)
  • A partir deAfeganistão
  • Membro desdeabr. de 2025
  • Responde em aprox.:1 hora
  • Última entrega1 mês

  • Idiomas

    Persa, Inglês
Full Stack Developer I'm a skilled Full Stack Developer specializing in building scalable and user-friendly web applications using NextJs/ReactJs, NestJs/ExpressJs, MongoDB, and Tailwind CSS. Whether you need a full-stack solution or just help with part of your app, I'm here to deliver clean, efficient, and modern code.

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