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Node.js & React Bug Fixing & Code Review

$18/hr Starting at $25

I will diagnose and fix bugs in your existing Node.js or React codebase, or review your code for quality, security, and performance issues.

What I can do: fixing broken API endpoints, resolving auth issues (JWT, sessions, cookies), debugging database query issues, identifying security vulnerabilities (XSS, CSRF, injection), improving error handling, and refactoring messy code into a clean, maintainable structure.

I use structured logging, test-driven reproduction cases, and coverage reports to isolate and fix issues properly — not just patch symptoms.

Stack coverage: Node.js, Express.js, NestJS, React, Next.js, PostgreSQL, MongoDB, TypeScript.

About

$18/hr Ongoing

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I will diagnose and fix bugs in your existing Node.js or React codebase, or review your code for quality, security, and performance issues.

What I can do: fixing broken API endpoints, resolving auth issues (JWT, sessions, cookies), debugging database query issues, identifying security vulnerabilities (XSS, CSRF, injection), improving error handling, and refactoring messy code into a clean, maintainable structure.

I use structured logging, test-driven reproduction cases, and coverage reports to isolate and fix issues properly — not just patch symptoms.

Stack coverage: Node.js, Express.js, NestJS, React, Next.js, PostgreSQL, MongoDB, TypeScript.

Skills & Expertise

Amazon Web ServicesJavaScriptMongoDBNode.jsPostgreSQLPythonVersion Control

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