I will fix bug for you asap

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Aliaksei K.
fix bug for you asap
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fix bug for you asap

About this gig

I am a commercial Full-Stack Developer with 3+ years of experience specializing in React, Next.js, Node.js, and NestJS. I don't just patch errorsI find the root cause, fix it cleanly, and ensure it won't break your application again.


️WHAT I CAN FIX FOR YOU:

Frontend & UI Issues (React, Next.js, TypeScript, Tailwind state/render bugs)

Backend & API Failures (Node.js, NestJS, FastAPI routing, controller errors)

Database & Auth Errors (PostgreSQL, MongoDB, Supabase, JWT, session crashes)

Integration Issues (Broken Stripe/PayPal payments, OpenAI APIs, WebSockets)

Deployment & Server Crashes (Vercel, Heroku, AWS, Docker configuration errors)


HOW IT WORKS:

1. Contact me and describe the issue (share error messages or screenshots).

2. I analyze the code and pinpoint the problem.

3. I deploy the clean, working fix without disturbing your existing features.


️ Fast turnaround. Professional, production-ready code.

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Design
    • Testing procedures

  • Frontend framework

    • Bootstrap
    • jQuery
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • FastAPI
    • Fastify
    • NestJS
    • Node.js

Get to know Aliaksei K.

Aliaksei K.

Fullstack Developer

  • FromPoland
  • Member sinceAug 2023
  • Avg. response time1 hour

  • Languages

    English, Belarusian, Russian, Polish
Frontend-focused Full-Stack Developer with 3+ years of commercial experience building scalable web applications, real-time systems, and maintainable frontend architecture. My personal page: https://aliaksei-konyshau.vercel.app/

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