You will get React and Next.js bug fixes with clean production-ready code
Rising Talent
Project details
Is your React or Next.js app broken, buggy, slow, or full of messy code?
I will help you fix bugs, clean up bad code, repair API integrations, resolve TypeScript errors, and make your web app more stable and production-ready.
This project is perfect if your previous developer disappeared, your AI-generated code is unstable, your app has bugs before launch, or your project works locally but fails in production.
I can help with React bugs, Next.js issues, TypeScript errors, API problems, authentication bugs, Stripe integration issues, Tailwind CSS layout problems, deployment errors, and messy code cleanup.
I work with React, Next.js, TypeScript, JavaScript, Node.js, NestJS, Prisma, MongoDB, PostgreSQL, Tailwind CSS, Stripe, Vercel, VPS, PM2, and Nginx.
Before starting, I will review your issue and confirm what can be fixed within the selected package.
I will help you fix bugs, clean up bad code, repair API integrations, resolve TypeScript errors, and make your web app more stable and production-ready.
This project is perfect if your previous developer disappeared, your AI-generated code is unstable, your app has bugs before launch, or your project works locally but fails in production.
I can help with React bugs, Next.js issues, TypeScript errors, API problems, authentication bugs, Stripe integration issues, Tailwind CSS layout problems, deployment errors, and messy code cleanup.
I work with React, Next.js, TypeScript, JavaScript, Node.js, NestJS, Prisma, MongoDB, PostgreSQL, Tailwind CSS, Stripe, Vercel, VPS, PM2, and Nginx.
Before starting, I will review your issue and confirm what can be fixed within the selected package.
Programming Languages
JavaScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$90
|
Standard
$220
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 2 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$40Frequently asked questions
2 reviews
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SL
San L.
Mar 19, 2025
Coding Front-End SaaS
I had the pleasure of working with Vasyl P. on a frontend project, and I couldn’t be more satisfied with the results. He delivered high-quality, well-structured, and responsive code, ensuring a seamless user experience.
Communication was excellent throughout the project—Vasyl P. was always responsive, proactive, and open to feedback. He not only met all the requirements but also suggested valuable improvements that enhanced the final product.
If you’re looking for a skilled, reliable, and detail-oriented frontend developer, I highly recommend Vasyl. I would definitely work with him again in the future!
Communication was excellent throughout the project—Vasyl P. was always responsive, proactive, and open to feedback. He not only met all the requirements but also suggested valuable improvements that enhanced the final product.
If you’re looking for a skilled, reliable, and detail-oriented frontend developer, I highly recommend Vasyl. I would definitely work with him again in the future!
SL
San L.
Nov 8, 2024
Coding Front-End SaaS
Great experience working with Vasyl! He delivered high-quality code on time, communicated effectively, and showed excellent technical skills. Highly recommended for anyone in need of a reliable programmer!
About Vasyl
Full-Stack SaaS Developer | Next.js, NestJS, React
Chernivtsi, Ukraine - 4:24 am local time
If your project is half-built, buggy, slow, AI-generated, or stuck before launch - I can step in, clean it up, fix the architecture, and turn it into a stable product.
I have 10+ years of development experience and 50+ projects delivered outside Upwork, including SaaS platforms, e-commerce websites, admin dashboards, mobile apps, payment integrations, APIs, CMS integrations, and deployment to production.
What I can help you with:
✅ Full-stack SaaS/MVP development
✅ Next.js apps with React, TypeScript, Tailwind CSS
✅ NestJS backend, REST APIs, Prisma, PostgreSQL/MongoDB
✅ Stripe payments, subscriptions, checkout flows
✅ Admin dashboards, CRM panels, internal tools
✅ Bug fixing, refactoring, performance optimization
✅ AI/vibe-coded project cleanup and stabilization
✅ Strapi CMS, Firebase, authentication, RBAC
✅ Deployment: VPS, PM2, Nginx, Vercel, DigitalOcean, AWS
✅ React Native mobile apps for iOS and Android
My working style is simple: I don’t just “write code”. I look at the product, business goal, user flow, architecture, performance, and long-term maintainability.
You can hire me when:
• your app works, but has bugs and bad code
• your previous developer disappeared
• your AI-generated code is messy and unstable
• you need a clean Next.js frontend
• you need a reliable NestJS backend
• you need Stripe, CMS, auth, API, or deployment done properly
• you want someone who can own both frontend and backend
Tech stack:
Next.js, React, TypeScript, JavaScript, NestJS, Node.js, Prisma, PostgreSQL, MongoDB, Strapi, Firebase, Stripe, Tailwind CSS, Zustand, React Query, React Native, AWS, DigitalOcean, Vercel, PM2, Nginx.
If you need a developer who can take responsibility for the whole product - frontend, backend, integrations, deployment, and fixing messy code - send me a message and I’ll suggest the best next step.
Steps for completing your project
After purchasing the project, send requirements so Vasyl can start the project.
Delivery time starts when Vasyl receives requirements from you.
Vasyl works on your project following the steps below.
Revisions may occur after the delivery date.
Step 1
Review requirements and reproduce the issue
Step 2
Investigate the codebase, errors, API flow, and project setup