I will fix backend and database issues in your lovable bolt or replit app

S
shazzadbackend
S
shazzadbackend
Shazzad Hosen
fix backend and database issues in your lovable bolt or replit app
Full Screen
fix backend and database issues in your lovable bolt or replit app

About this gig

Pain:

Built your app with Lovable, Bolt.new, Replit, or Base44 and hit a wall the AI can't fix broken auth, database errors, or backend logic that doesn't hold up outside the demo?


What I Fix:

  • Authentication and login flows (JWT, session handling, broken auth logic)
  • Database issues connection errors, bad queries, schema problems (MongoDB, PostgreSQL, Supabase)
  • API endpoints that fail, timeout, or return incorrect data
  • Security gaps common in AI-generated code exposed logic, unvalidated inputs
  • Backend logic that breaks under real use, not just the demo flow


Why Work With Me:

  • I'm a backend developer with 1.5+ years of experience. I read and fix real code, not just re-prompt the AI tool
  • Currently running production-grade auth systems (JWT with refresh token rotation) and AI-integrated backends of my own this is my core skill, not a side service
  • Clear explanation of what was broken and why, in plain language no coding knowledge required from you
  • Fast turnaround for urgent, close-to-launch projects


Get Started:

Share your project link (Lovable, Bolt, Replit, Base44) or repo access, plus what's broken, before ordering I'll confirm scope and timeline first.

  • Type

    • Bug fixes
    • API integration
    • Authentication
    • Database integration
    • Security implementation

  • Vibe coding platform

    • Lovable

  • Target device

    • Website

  • Database type

    • Supabase
    • MongoDB Atlas
    • PostgreSQL

Get to know Shazzad Hosen

Shazzad Hosen

Backend Developer specializing in NodeJs APIs and AI Integration

  • FromBangladesh
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    Bengali, English, Hindi
I build secure, production-ready backend systems using Node.js, Express, and Fastify — REST APIs, auth flows, and AI-integrated features. I focus on what's easy to get wrong: JWT auth with refresh token rotation, Redis rate limiting, and clean database design (MySQL, MongoDB, PostgreSQL). Recent work: a production auth API deployed on Render, Aiven, and Upstash, plus LogForge, an AI log intelligence platform. I also fix backend issues in AI-generated apps (Lovable, Bolt.new, Replit). Pursuing a B.Sc. in Physics alongside. Open to freelance work, async-first.

My Portfolio

Related tags