I will fix mongodb sql firebase supabase database connection auth error or query issue

N
nurekowser01
N
nurekowser01
Nure Kowser

Level 1

fix mongodb sql firebase supabase database connection auth error or query issue
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fix mongodb sql firebase supabase database connection auth error or query issue

About this gig

Fix MongoDB, Firebase, or Supabase Issues Fast


Is your database not connecting? Getting authentication errors, failed queries, permission issues, or broken backend integrations?


I will quickly diagnose and fix database-related problems in your application.


What I Fix:


  • MongoDB connection errors
  • Firebase Firestore issues
  • Firebase Authentication problems
  • Supabase connection issues
  • Supabase Auth errors
  • Database query bugs
  • Environment variable problems
  • CRUD operation failures
  • Backend database integration issues
  • API to database connection problems


Supported Technologies:


  • MongoDB
  • Firebase
  • Firestore
  • Supabase
  • Node.js
  • Spring Boot
  • React
  • Angular
  • Next.js
  • REST APIs


Why Choose Me?


  • 10+ years experience (Ex-Samsung Engineer)
  • Fast debugging and troubleshooting
  • Clean and secure fixes
  • Production-ready solutions
  • Clear communication


Fast delivery depending on issue complexity.


Please contact me before ordering and briefly describe your issue.

  • Programming language

    • TypeScript

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

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

  • Backend framework

    • Laravel
    • FastAPI
    • Next.js
    • Node.js
    • Spring

Get to know Nure Kowser

Nure Kowser

Full Stack Developer Angular Spring Boot

4.8(15)

Level 1

  • FromBangladesh
  • Member sinceApr 2021
  • Avg. response time1 hour
  • Last delivery2 weeks

  • Languages

    Bengali, English
🚀 Full-Stack Developer | Angular • React • Spring Boot • Node.js • Firebase I fix, debug, and deploy production-ready web applications. Ex-Samsung engineer with 10+ years experience. ✅ Deployment: Vercel, Railway, Render, Netlify, AWS ✅ Authentication: Firebase, Google Login, OAuth, JWT, sessions ✅ Backend/API: Spring Boot, Node.js, REST APIs, bug fixing ✅ Database: MongoDB, Supabase, PostgreSQL, MySQL I fix broken apps, deployment failures, auth issues, and optimize performance. Fast delivery • Clean code • Production-ready results Contact me before ordering to discuss your project.

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