I will fix your nextjs app and make it production ready

Z
zlatkomarjanovi
Z
zlatkomarjanovi
Zlatko M
5.0
5.0
Among my clients  

About this gig

You already have an app. Maybe it was built in Lovable, Bolt, v0, Cursor, or a Next.js repo someone started and left messy.


It looks fine in a demo. It is not ready for real users.

Auth is loose. Stripe is half-wired.


Database rules are missing. Env vars are exposed.

One bad deploy can break billing, access, or logins.


I take over the existing codebase and make it shippable.


What I do:

  • audit the repo before rewriting anything
  • fix auth, sessions, roles, and access control
  • repair Supabase / Postgres and RLS
  • finish Stripe checkout, webhooks, subscriptions, and retries
  • clean up Vercel deployment
  • close obvious security and data holes
  • leave you with a codebase you can keep shipping


This gig is for an app that already exists.


Need a new SaaS from scratch? Use my MVP gig.

Need hands-on Cursor / AI coding help? Use my consulting gig.


Stack:

Next.js,

React,

TypeScript,

Supabase,

Postgres,

Stripe,

Firebase,

Vercel.

7+ years.

120+ projects.


Send me the repo or live URL. Ill tell you what Id fix firstand what I wouldnt touch.

Gig workflow

These are the steps we’ll follow to complete your project.

    Basic Package.
    These are the steps we’ll follow to complete your project.
  • Video meetup

    We'll meet (Zoom) to discuss your project.

  • Website Design

    I'll create the design for your website.

    Modifications · Final Design
  • Development

    I'll develop the website and deliver a working product for your review.

  • Content & Delivery

    I'll complete the website for delivery.

  • Delivery

    I'll send you the final delivery for review and feedback.

Get to know Zlatko M

Zlatko M

I build and fix your AI website, SaaS MVP, or agency client site

4.9(81)
  • 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

    EGC

  • Vault Apps

    Vault Apps

  • Mavesta Media

    Mavesta Media

My Portfolio

Other Vibe Coding Services I Offer

Reviews

2 reviews for this Gig
5.0

(2)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • H

    hintsteinermktg

    AT

    Austria

    5

    Great experience working with Zlatko! He did a great job creating our press sites and delivered a professional, well-structured result that matched what we needed. Communication was smooth throughout the project. Highly recommended and we would happily work with him again!

    $1,000-$2,500

    Price

    4 weeks

    Duration

    Helpful?
    Yes
    No
  • M
    image-docs

    marvinvaca2

    US

    United States

    5

    Amazing work!

    $600-$800

    Price

    13 days

    Duration

    Helpful?
    Yes
    No
Reviews

2 reviews for this Gig
5.0

(2)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • H

    hintsteinermktg

    AT

    Austria

    5

    Great experience working with Zlatko! He did a great job creating our press sites and delivered a professional, well-structured result that matched what we needed. Communication was smooth throughout the project. Highly recommended and we would happily work with him again!

    $1,000-$2,500

    Price

    4 weeks

    Duration

    Helpful?
    Yes
    No
  • M
    image-docs

    marvinvaca2

    US

    United States

    5

    Amazing work!

    $600-$800

    Price

    13 days

    Duration

    Helpful?
    Yes
    No