I will fix bugs and errors in your mern, pern or nextjs app

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U
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Usman
fix bugs and errors in your mern, pern or nextjs app
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fix bugs and errors in your mern, pern or nextjs app
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fix bugs and errors in your mern, pern or nextjs appfix bugs and errors in your mern, pern or nextjs appfix bugs and errors in your mern, pern or nextjs appfix bugs and errors in your mern, pern or nextjs appfix bugs and errors in your mern, pern or nextjs app

About this gig

Is your MERN, PERN, or Next.js app broken, buggy, or not working the way it should? I'll find the problem and fix it fast.

As a full-stack developer experienced in building MERN, PERN, and Next.js applications from scratch, I know exactly where bugs tend to hide from broken API calls to messy state management to database connection issues. I don't just patch symptoms, I find the root cause and fix it properly, with clean, documented code.

What I can fix:

  • API and backend errors (Node.js, Express.js)
  • Database connection and query issues (MongoDB, PostgreSQL)
  • Authentication and authorization bugs
  • React/Next.js UI bugs, broken state, rendering issues
  • Deployment errors (Vercel, Render, Railway, Heroku)
  • npm and dependency conflicts, build failures
  • Performance bottlenecks and slow load times

Stacks covered: MERN, PERN, Next.js, Express, TypeScript

What I need from you to get started:

  • Access to your repo (GitHub/GitLab) or the relevant code files
  • Error logs, screenshots, or a short description of what's going wrong
  • What you expected to happen vs. what's actually happening

Why work with me:

  • Fast turnaround and clear communication throughout
  • I explain what caused the bug, not just silently f

  • Platform

    • Custom
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Get to know Usman

Usman

MERN Stack Developer PERN Stack

  • FromPakistan
  • Member sinceJan 2026
  • Avg. response time1 hour

  • Languages

    Urdu, English
I build scalable, production-ready full-stack applications using MERN, PERN, and Next.js. From responsive UIs to secure JWT/OAuth authentication, I handle the full stack — including real-time features with WebSockets and WebRTC, AI integrations, and Stripe payment systems. With experience across internships and professional software houses, I've shipped: SaaS platforms with subscription billing and role-based access Real-time trading and video conferencing tools AI-powered chat applications Professional networking platforms I focus on clean, maintainable code and fast, honest communication

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