Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix bugs and debug errors in react nextjs nodejs and ai generated code
Moksh Gupta
About this gig
Is your React, Next.js or Node.js app throwing errors? AI-generated code breaking in production? I fix it fast.
I am a full-stack developer with 3+ years building and debugging JavaScript applications, REST APIs, and database-backed systems.
What I Fix:
- React and Next.js runtime errors, hydration issues, build failures
- Node.js and NestJS backend bugs, API errors, crash loops
- AI-generated code that does not work as expected
- Database query errors (MongoDB, PostgreSQL, MySQL)
- Authentication issues (JWT, OAuth, sessions)
- TypeScript type errors and compilation failures
- Performance issues and slow API responses
Why Choose Me:
- Same-day delivery on Basic package
- I explain exactly what was wrong and how I fixed it
- Experience with MERN, NestJS, TypeScript, AWS
- Architected systems handling 800K+ daily transactions
Message me first with your error details and I will confirm I can fix it before you order!
Get to know Moksh Gupta
Moksh Gupta
Full Stack AI Engineer LLM Integration Backend Systems SaaS
- FromIndia
- Member sinceApr 2026
- Avg. response time3 hours
Languages
English, Hindi
Full Stack AI Engineer. I build scalable systems from 0 to 1.
Software Engineer who architected distributed systems handling 800K+ daily transactions at 99.9% uptime.
AI: RAG pipelines, LLM orchestration, agentic workflows, secure code sandbox.
Backend: Node.js, NestJS, microservices, Kafka, SQS, Docker, AWS.
Full Stack: React, Next.js, dashboards, AI chat.
Founder of DevToolLab, an AI-native developer platform with 260+ tools. Reached 400K+ search impressions in 3 months using SEO and product-led growth strategies.
Message me before ordering.
My Portfolio
Other Software Development Services I Offer
FAQ
What types of bugs can you fix?
I fix React, Next.js, Node.js, NestJS, and JavaScript/TypeScript bugs including runtime errors, hydration issues, API failures, database query errors, authentication bugs, and AI-generated code that doesn't work as expected.
How quickly will you fix my bug?
The Basic plan (1 bug) is delivered same day — usually within a few hours. Standard (up to 5 bugs) is delivered in 2 days. For complex issues, I communicate clearly so there are no surprises.
Do you need access to my codebase or repository?
Yes, sharing your GitHub repo or a code snippet via order requirements helps me diagnose the issue faster. All code is kept strictly confidential and deleted after delivery.
What if the bug isn't fixed after delivery?
I offer free revisions within the scope of the order. If the issue persists after my fix, I will re-investigate at no extra cost. Your satisfaction is guaranteed.
Can you fix bugs in AI-generated code from ChatGPT or ClaudeCode?
Yes, this is one of my specialties. AI-generated code often has logic errors, missing dependencies, incorrect API usage, or TypeScript type mismatches. I debug and fix it so it works correctly in your actual project.
