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I will fix your ai app and be your claude code and vibe coding consultant
Zlatko M
5.0
5.0
About this gig
You built the app with Claude Code, Cursor, Lovable, Replit, or Base44. It looked great at first then auth broke, Stripe stopped working, Supabase got messy, APIs failed, or the whole thing refused to deploy.
I fix AI-built websites and web apps so they actually work in production.
Send me the repo, live URL, or broken preview. I trace the real issue, fix it properly, and clean up the parts that are making the project fragile.
I can help with:
- Bugs in vibe-coded and AI-generated projects
- Login, users, roles, and permissions
- Supabase database and auth problems
- Stripe checkout, subscriptions, and webhooks
- OpenAI, Claude, and Gemini integrations
- Next.js and React issues
- Broken APIs and backend logic
- Performance problems and Vercel deploy failures
- Features and fixes needed before launch
I work with the same tools these projects are usually built with, so I can get into an existing codebase quickly without rebuilding everything from scratch.
7+ years of experience. 120+ projects. $75K+ earned on Fiverr. 4.9 rating. 100% on-time delivery.
Send me the app and tell me what is broken. I will tell you the fastest path to getting it working properly.
MESSAGE ME NOW
Get to know Zlatko M
Zlatko M
I build and fix your AI website, SaaS MVP, or agency client site
- FromCroatia
- Member sinceDec 2021
- Avg. response time1 hour
- Last delivery1 week
Languages
English, Croatian
You need the website or AI app shipped, not stuck half-finished in a repo. I build production-ready websites and apps, or fix existing projects and take them live. If you built with Claude Code, Cursor, Lovable, Replit, or another AI tool, I can handle auth, Stripe, databases, APIs, bugs, performance, and deployment. Starting from scratch? Send the brief or a Figma. Agencies can hire me white label: you keep the client, I handle development. 7+ years, 120+ projects, 80+ five-star reviews, 4.9 rating, 100% on-time. Send the repo, brief, or broken preview and I’ll tell you the fastest path live
Among my clients
EGC
Vault Apps
Mavesta Media
My Portfolio
Other Vibe Coding Services I Offer
FAQ
What kind of projects can you help with?
I can help with AI web apps, SaaS products, MVPs, dashboards, internal tools, and vibe-coded projects built with modern development tools.
Can you fix bugs in Claude Code or Cursor projects?
Yes. I can troubleshoot and fix issues in projects built or maintained with Claude Code, Cursor, and similar AI-assisted development workflows.
Can you work on an existing codebase?
Yes. I can review your existing project, identify the issue, fix bugs, improve the structure, and add new functionality where needed.
Can you help with Supabase and database issues?
Yes. I can help with Supabase setup, database logic, authentication, permissions, queries, and common integration problems.
Can you fix Stripe payment or subscription issues?
Yes. I can troubleshoot Stripe checkout, subscriptions, webhooks, customer flows, payment logic, and related integration issues.
Can you integrate OpenAI, Claude or Gemini?
Yes. I can integrate and troubleshoot OpenAI, Claude, Gemini, and other AI APIs depending on your project requirements.
Can you help with Vercel deployment problems?
Yes. I can help diagnose build errors, environment variable issues, deployment failures, routing problems, and other Vercel-related issues.
Can you improve the UI/UX of my existing app?
Yes. I can improve layouts, responsiveness, usability, visual consistency, and overall user experience without rebuilding everything from scratch.
What if you cannot fix the issue within the package time?
I will explain what is causing the problem, what work is still required, and provide a clear estimate or custom offer for the remaining work.
Do you offer ongoing development support?
Yes. I can provide ongoing support for bug fixes, improvements, new features, integrations, maintenance, and technical consulting.
Reviews
1 reviews for this Gig
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Rating Breakdown
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- Quality of delivery
- Value of delivery
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J johnatanmichael
United States
Ongoing collaborationZlatko quickly understood the issues with my website and gave me clear, practical solutions I could actually implement. He has a strong understanding of web development, AI tools, SEO, and modern website strategy, and explained everything in a way that was easy to follow. I left the consultation knowing...
$50-$100
Price
1 day
Duration
Z 
Seller's Response
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J johnatanmichael
United States
Ongoing collaborationZlatko quickly understood the issues with my website and gave me clear, practical solutions I could actually implement. He has a strong understanding of web development, AI tools, SEO, and modern website strategy, and explained everything in a way that was easy to follow. I left the consultation knowing...
$50-$100
Price
1 day
Duration
Z Seller's Response
Helpful?
