You will get debugged claude code, cursor, lovable or vibe coded app
Rising Talent
Project details
I will design and develop a polished, cross-platform mobile app using React Native and Expo, with clean UI, scalable code, and the core features needed to launch.
I can build:
AI chatbots and assistants
SaaS and subscription apps
Business and productivity apps
Booking, marketplace, and dashboard apps
Authentication and user accounts
Supabase or Firebase backend
Stripe payments and subscriptions
OpenAI, Claude, Gemini, and API integrations
Push notifications and real-time features
App Store and Google Play deployment support
My stack includes React Native, Expo, TypeScript, Supabase, Firebase, Stripe, APIs, GitHub, and modern AI models.
You will receive more than a basic prototype. I will structure, test, refine, and deliver your app with strong UI/UX and production-ready source code.
With 7+ years of experience and 120+ completed projects, I combine development with professional product design.
Please message me before ordering with your idea, required features, references, and preferred integrations.
I can build:
AI chatbots and assistants
SaaS and subscription apps
Business and productivity apps
Booking, marketplace, and dashboard apps
Authentication and user accounts
Supabase or Firebase backend
Stripe payments and subscriptions
OpenAI, Claude, Gemini, and API integrations
Push notifications and real-time features
App Store and Google Play deployment support
My stack includes React Native, Expo, TypeScript, Supabase, Firebase, Stripe, APIs, GitHub, and modern AI models.
You will receive more than a basic prototype. I will structure, test, refine, and deliver your app with strong UI/UX and production-ready source code.
With 7+ years of experience and 120+ completed projects, I combine development with professional product design.
Please message me before ordering with your idea, required features, references, and preferred integrations.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$100
|
Standard
$295
|
Advanced
$750
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 2 | 4 | 6 |
Number of Pages | 2 | 4 | 6 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | - | |
Source Code |
Frequently asked questions
15 reviews
(15)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
BM
Blake M.
May 21, 2026
24 Hour Turnaround for Design Files - Website (Need Figma FIle)
good work!
MW
Marshall W.
Nov 8, 2024
Beau Monde Builders Website Buildout
Another great website built from the ground up from Zlatko. Truly the best on UpWork, this is my 3rd website with him. He always get's better. Thank you Z!
MW
Marshall W.
Oct 28, 2024
Athena Website Buildout In Milestones
Another great project with Zlatko. Very professional, solutions oriented, adds value where we weren't even thinking and delivered an outstanding product in the timeline agreed. Looking forward to working with Zlatko again. Thank you Z!
PP
Pedro P.
Oct 18, 2024
Figma to Webflow 3 Pages
Great experience. Zlatko worked on translating our Figma designs into our website. All great an amazing
RA
Rachel A.
Sep 16, 2024
rOTA Webflow Site Corrections
About Zlatko
Full-Stack Dev | Next.js, Supabase, AI Apps, Claude Code, Lovable Bolt
100%
Job Success
Zivinice, Bosnia and Herzegovina - 10:49 pm local time
Many founders can now generate the first version of an app quickly. The difficult part starts afterward: broken authentication, unreliable databases, incomplete Stripe integrations, poor responsive behavior, insecure logic, confusing UI, failed deployments, exposed envs, and code that becomes harder to maintain with every new prompt.
🟢 That is where I come in.
I can take your existing Lovable, Cursor, Claude Code, Replit, Base44, or custom Next.js project and turn it into a stable, polished application ready for real users.
🟢 WHAT I CAN HELP WITH
→ Fix and complete Lovable, Cursor, Claude Code, and vibe-coded applications
→ Build production-ready SaaS MVPs and web applications
→ Repair authentication, user accounts, roles, and permissions
→ Integrate Supabase, Firebase, PostgreSQL, and external APIs
→ Implement Stripe payments, subscriptions, and billing flows
→ Build dashboards, admin panels, client portals, and internal tools
→ Debug broken React, Next.js, and TypeScript code
→ Improve application architecture, performance, and maintainability
→ Redesign weak AI-generated interfaces into polished responsive products
→ Deploy and configure applications using GitHub and Vercel
→ Integrate AI features, agents, automations, and business workflows
→ N8N Automations and custom business workflows
🟢 COMMON PROJECTS:
→ EditLayer: NPM Module, installable on any marketing site that allows easy editing for teams
→ ZedNova: Complete Agency Website buildout, CMS setup, deployment and agentic updating
→ Pocketrun: Mobile app allowing devs to send prompts to their local machine from their phone
→ Preflight: Framer plugin that scans the entire website for erros, AI fixes them
→ Anti-slop workflow: Workflow created specifically to eliminate slop in AI designs
🟢 WHY CLIENTS WORK WITH ME
I have more than seven years of experience across web design, frontend development, full-stack implementation, UI/UX, CMS architecture, technical SEO, automation, and product delivery.
I have completed 120+ websites, platforms, and digital systems across Fiverr, Upwork, Contra, and direct client work. My background includes a 100% Upwork Job Success Score, $100K+ earned on Fiverr, 50+ five-star reviews, and experience delivering projects for clients across the United States, United Kingdom, and Europe.
Unlike developers who focus only on code, I also understand product design, usability, responsiveness, conversion, and how the finished application should feel to the user.
🟢 TECHNOLOGY
Next.js, React, TypeScript, JavaScript, Supabase, Firebase, PostgreSQL, Stripe, REST APIs, OpenAI API, Claude, Cursor, Lovable, GitHub, Vercel, n8n, Make, Webflow, Framer, Figma, Sanity, Payload, and headless CMS platforms.
🟢 BEST FIT
→ Founders building or fixing SaaS MVPs
→ Businesses with incomplete AI-generated applications
→ Teams that need a reliable technical partner to finish the product
→ Agencies that need full-stack development support
→ Companies replacing manual processes with internal software
→ Clients who care about both strong engineering and polished UI
Send me your repo, screenshots, and what's broken. I'll reply within a few hours with the fastest path to done.
Steps for completing your project
After purchasing the project, send requirements so Zlatko can start the project.
Delivery time starts when Zlatko receives requirements from you.
Zlatko works on your project following the steps below.
Revisions may occur after the delivery date.
Video Meetup
Video Meetup