You will get your Lovable, Bolt, or Replit app fixed and made production-ready
Project details
Built something with Lovable, Bolt, Replit, v0, or Base44 — and now it's breaking, incomplete, or not ready for real users? That's normal. AI coding tools ship fast first drafts but routinely leave broken auth flows, missing backend logic, exposed API keys, and half-working features.
I'm a full-stack developer (Node.js, Express, Spring Boot, React/Next.js) who specializes in taking vibe-coded apps the rest of the way — fixing what's broken, completing what's missing, and making it safe to launch. Real production experience at VaultsPay Dubai (fintech, JWT auth, CI/CD), shipped SaaS products with Stripe/Lemon Squeezy billing, and Claude API integration in live products. CEH-certified, so security gets checked before anything ships — not bolted on after.
What you get:
→ Full review of your app to identify what's broken or incomplete
→ Bugs, broken flows, and integration issues fixed
→ Backend logic completed where needed
→ Security risks flagged before you launch
Send your project link and a list of what's not working — I'll tell you honestly what it'll take to fix it, before you pay for anything.
I'm a full-stack developer (Node.js, Express, Spring Boot, React/Next.js) who specializes in taking vibe-coded apps the rest of the way — fixing what's broken, completing what's missing, and making it safe to launch. Real production experience at VaultsPay Dubai (fintech, JWT auth, CI/CD), shipped SaaS products with Stripe/Lemon Squeezy billing, and Claude API integration in live products. CEH-certified, so security gets checked before anything ships — not bolted on after.
What you get:
→ Full review of your app to identify what's broken or incomplete
→ Bugs, broken flows, and integration issues fixed
→ Backend logic completed where needed
→ Security risks flagged before you launch
Send your project link and a list of what's not working — I'll tell you honestly what it'll take to fix it, before you pay for anything.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$120
|
Standard
$300
|
Advanced
$600
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Frequently asked questions
1 review
(1)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
MB
Muhammad B.
Jan 23, 2026
Expert Backend Developer for AI SaaS Bug Fix
Quickly identified the issue and fixed the backend bug with clean, efficient code, great AI SaaS expertise.
About Zubair
Lovable, Bolt & Replit App Fixes | Supabase, Stripe, Security Audit
Islamabad, Pakistan - 8:48 am local time
That gap between "it works in the demo" and "it survives real users" is what I fix.
I'm a full-stack developer (Node.js, Express, React/Next.js, Supabase, PostgreSQL) and a CEH-certified ethical hacker. Plenty of developers can add features to an AI-generated app. Fewer can look at that code and tell you which part will quietly leak your customers' data the week after launch. I do both.
WHAT I FIX
- Supabase Row Level Security: real tenant-to-tenant data isolation, not "RLS enabled" and hope for the best
- Broken authentication and sessions (Supabase Auth, JWT, OAuth, Auth0)
- Exposed API keys, secrets in the repo, service-role keys shipped to the browser
- Stripe and Lemon Squeezy billing: checkout, webhooks, idempotency, failed payments, plan gating
- Uncapped AI/LLM endpoints that let anyone run up your OpenAI or Claude bill
- Input validation, SQL injection, rate limiting, error handling
- Real backends added to frontend-only vibe-coded apps: schema design, APIs, migrations
- Deployments that hold: env vars, custom domains, CI/CD, Vercel, Docker, AWS
HOW I WORK
1. Send me your app link or repo. I take a look and tell you honestly what's wrong. No charge, no pitch.
2. You get findings ranked by severity, in plain English. "Any signed-in user can read every other customer's records", not a wall of CVE numbers.
3. We agree a fixed price per fix. Work is delivered as pull requests you review and approve. Your code stays yours throughout.
PROOF
- Shipped an AI study app, live on Google Play with 100+ users
- Built and deployed a RAG document Q&A chatbot for a SaaS client
- Production fintech work at VaultsPay: JWT auth, secure APIs, CI/CD pipelines
- Backend team lead on a 5-developer SaaS build (Node.js, React, MongoDB)
- CEH (Certified Ethical Hacker), EC-Council, 2025
- 5.0 on Upwork: hired to fix an AI SaaS backend bug, diagnosed and shipped inside 24 hours
WAYS TO START
- Free 15-minute review of your app before you spend anything
- Fixed-price security audit with a written, severity-ranked report
- Fixed-price rescue: auth, backend, payments and deployment sorted so you can launch
- Hourly or monthly retainer once you're live and want someone on call
Send me your app link and tell me what's breaking. If it isn't something I can genuinely help with, I'll tell you that too.
Keywords: Lovable developer, Lovable app fix, Bolt.new developer, Replit developer, Base44, v0, Cursor, vibe coding, vibe code rescue, AI app production ready, MVP rescue, Supabase RLS, Supabase auth, Supabase edge functions, PostgreSQL, Stripe integration, Stripe webhooks, Lemon Squeezy, Next.js, React, TypeScript, Node.js, Express, security audit, code review, bug fix, API development, full-stack developer.
Steps for completing your project
After purchasing the project, send requirements so Zubair can start the project.
Delivery time starts when Zubair receives requirements from you.
Zubair works on your project following the steps below.
Revisions may occur after the delivery date.
Initial review and scoping
I review your project code, identify the bugs and missing pieces, and confirm scope with you before starting any work. If the issue is bigger than the package covers, I flag it upfront.
Fix and complete the app
I fix the reported bugs, complete any broken backend logic, and repair integration issues. Every change is tested before I mark it done.