I will fix complex bugs in your react, next js, or node js application

K
kaushik_chwdhry
K
kaushik_chwdhry
Kaushik

About this gig

Are you staring at a blank screen, a console full of red errors, or a feature that just won't work?

Stop wasting hours stack-overflowing the same error. I specialize in diagnosing and fixing complex logic issues in MERN Stack and Next.js applications.

I don't just "patch" the code; I perform a Root Cause Analysis to ensure the bug is fixed permanently and your application remains stable.

I can help you resolve:

  • React/Next.js Issues: Hydration errors, useEffect loops, State Management (Redux/Context), and Routing glitches.
  • Backend Logic: Node.js/Express API failures, Middleware issues, and Auth flow (JWT/Session) breakage.
  • Database: MongoDB connection errors and complex query fixes.
  • Deployment: Docker container crashes and Vercel/Netlify build errors.

Why trust me with your code?

  • Logic-First Approach: I understand the business flow, not just the syntax.
  • Video Explanation: For complex fixes, I provide a Loom video explaining exactly why it broke and how I fixed it.
  • Safe Handling: I work on local/staging environments to protect your live data.

My Tech Stack: React.js | Next.js | Node.js | TypeScript | MongoDB | Tailwind CSS | Docker | Postgresql | SQL | Prisma | Kubernetes

Get to know Kaushik

Kaushik

Building Scalable SaaS, Custom Web Apps and AI Agents

  • FromIndia
  • Member sinceFeb 2026
  • Languages

    English, Hindi, Bengali
Hi, I'm Kaushik. Most developers build simple websites; I build intelligent tools that run your business. I develop custom web apps and AI integrations that replace messy spreadsheets, automate workflows, and win back your time. Whether you need a scalable SaaS MVP, a custom CRM, a RAG-powered chatbot to query your private data, or complex autonomous AI agents, I handle the heavy lifting. I don't just write code—I deliver secure, reliable solutions. I include video training with every handover. Message me, and let's build your next operational tool!

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