I will fix nodejs API database and backend bugs fast

E
ethan_nguyen1
E
ethan_nguyen1
Thong N
fix nodejs API database and backend bugs fast
Full Screen
fix nodejs API database and backend bugs fast

About this gig

Is a backend bug blocking your release or costing you time? I will diagnose and fix issues in Nodejs and JavaScript services, REST APIs, MongoDB integrations, and microservice workflows.


What you receive:

- Root cause investigation

- Clean, focused code fix

- Testing of the affected flow

- Documentation of what changed

- Clear communication throughout the order


I can help with API errors, failed integrations, database query problems, authentication issues, performance bottlenecks, deployment-related defects, and hard-to-reproduce backend behavior.


Please message me before ordering if the scope is unclear or the issue affects production. Share the error, expected behavior, relevant logs, reproduction steps, repository access method, and environment details. I will review the scope and tell you which package fits.

  • Programming language

    • JavaScript

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Backend framework

    • Express.js
    • Fastify
    • NestJS
    • Node.js

Get to know Thong N

Thong N

Backend Engineer

  • FromVietnam
  • Member sinceMay 2026

  • Languages

    Vietnamese, English
I am a Backend Engineer with solid experience in designing, building, and maintaining robust, scalable systems that prioritize reliability and performance. I have worked on a variety of microservice-based projects across multiple domains, including e-commerce, healthcare management, and ERP systems.

Related tags