I will fix nodejs, nestjs, mysql, postgres or mongodb bugs

Is your Node.js or NestJS backend throwing errors, returning wrong data, or running slow? Ill find the real cause and fix it properly, not just hide the symptom.

Im a full-stack developer who works daily with Node.js, NestJS, Express, TypeScript, and MySQL, PostgreSQL, and MongoDB, so I can fix problems in the API and in the database behind it.

WHAT I CAN FIX

• 500 errors, crashes, and unhandled exceptions
• Broken endpoints, routes, and validation
• NestJS modules, dependency injection, guards, and pipes
• Auth issues: JWT, login, roles, and sessions
• CORS, middleware, and file upload errors
• Slow or wrong SQL and MongoDB queries
• ORM issues: TypeORM, Prisma, Sequelize, Mongoose
• Migration, connection, and environment errors

WHAT YOU GET

• A tested fix with clean, readable code
• A plain-language explanation of the cause

HOW IT WORKS

1. Message me the error or the failing endpoint.
2. Share the repo and steps to reproduce (use a test database).
3. I fix it, test it, and explain what went wrong.

NOTE: 1 bug = one issue with one root cause. Longer lists fit the Standard or Premium package. I never need your production passwords.