You will get expert React and Next.js bug fixes
Top Rated
Project details
Struggling with React or Next.js bugs that hurt your user experience? I provide expert technical solutions to resolve complex issues and optimize your frontend. As a developer experienced in Laravel + React and Node.js + React stacks, I deliver stable, high-performance code.
What I fix:
Logic Errors: State management, API integrations, and data handling issues.
TypeScript Fixes: Resolving type errors to ensure application robustness and predictability.
Performance: Enhancing load times and interface responsiveness.
UI/UX Tweaks: Layout fixes, responsiveness glitches, and minor design adjustments.
Why choose this project:
Technical Expertise: Experience building complex web interfaces and system architectures.
Clean Code: I prioritize writing maintainable code that is easy for your team to manage.
Type-Safety: Leveraging TypeScript to prevent future regressions and improve reliability.
Modern Tools: Efficient debugging using professional IDEs for quick and accurate turnarounds.
This project is ideal for business owners needing high-quality fixes without breaking existing features. Let's get your application back on track!
What I fix:
Logic Errors: State management, API integrations, and data handling issues.
TypeScript Fixes: Resolving type errors to ensure application robustness and predictability.
Performance: Enhancing load times and interface responsiveness.
UI/UX Tweaks: Layout fixes, responsiveness glitches, and minor design adjustments.
Why choose this project:
Technical Expertise: Experience building complex web interfaces and system architectures.
Clean Code: I prioritize writing maintainable code that is easy for your team to manage.
Type-Safety: Leveraging TypeScript to prevent future regressions and improve reliability.
Modern Tools: Efficient debugging using professional IDEs for quick and accurate turnarounds.
This project is ideal for business owners needing high-quality fixes without breaking existing features. Let's get your application back on track!
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, W3C Markup Validation Service, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 1 day | 5 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - |
Optional add-ons
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Fast Delivery
+$150 - $300Frequently asked questions
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DR
David R.
Mar 20, 2026
React Developer with TailwindCSS Expertise
Oleg is a great developer and helped us tremendously with our React frontend. Good English and communication skills. Can highly recommend.
VC
Victor C.
Jul 1, 2025
European Frontend Developer Needed - Tailwind CSS, HTML, and CSS
IZ
Itay Z.
Feb 20, 2025
Frontend Developer Needed for Figma to Next.js Project
IZ
Itay Z.
Feb 20, 2025
Frontend Developer Needed for Figma to Next.js Project
DH
Donald H.
Feb 7, 2025
Modify existing CSS glitch effect slightly
Oleg is reat to work with. Highly recommend.
About Oleg
React Developer | Next.js Developer | Refactoring | AI Code Cleanup
100%
Job Success
Kharkiv, Ukraine - 5:49 am local time
Usually, my work is frontend-focused, but I’m equally comfortable handling full-stack tasks when the project calls for it. I regularly work with API integrations, authentication flows, data-heavy interfaces, and backend-driven systems built with Node.js, NestJS, Laravel, Supabase, or GraphQL.
Sometimes I join projects at the start and help build products from scratch. Other times, I step into existing codebases that have grown harder to maintain, scale, or extend. Over the years, I’ve worked on products where shipping features matters, but keeping the codebase maintainable matters just as much.
As products grow, codebases naturally become harder to maintain. Features take longer to ship, bugs start showing up in unexpected places, and small changes can affect other parts of the system. I help make products easier to extend, more predictable to work with, and less painful to maintain over time.
I try to keep things practical. Clear structure, reusable components, predictable state management, and avoiding unnecessary complexity so the codebase stays easy to understand as the product grows.
I mainly work with React, TypeScript, Next.js, Tailwind CSS, Vanilla Extract, Zustand, TanStack Query, Zod, shadcn/ui, and React Aria Components, and I’m comfortable working across modern React ecosystems.
I also work with projects that were built quickly using AI tools like ChatGPT, GitHub Copilot, or other code generation tools and later became hard to scale or maintain. I help stabilize those codebases, improve structure, and turn them into something reliable.
What I usually help with:
▪ Building React / Next.js applications from scratch
▪ Turning Figma designs into responsive, accessible UI
▪ Refactoring and improving existing React / TypeScript codebases
▪ Adding new features without breaking existing functionality
▪ Integrating REST APIs and GraphQL backends
▪ Improving performance in React / Next.js applications
▪ Handling complex frontend logic and state management
▪ Stabilizing AI-generated or prototype codebases
I’m comfortable working independently or as part of an existing team. I care about keeping things practical, avoiding overengineering, and writing code that stays easy to work with for the people who maintain it later.
If that sounds like what you need, feel free to reach out.
Steps for completing your project
After purchasing the project, send requirements so Oleg can start the project.
Delivery time starts when Oleg receives requirements from you.
Oleg works on your project following the steps below.
Revisions may occur after the delivery date.
Code Review & Bug Reproduction
I will analyze your codebase, set up the local environment, and consistently reproduce the reported issue to understand its root cause.
Deep Debugging & Fix Implementation
Using professional dev tools, I will identify the conflict in the logic or UI and apply a clean, type-safe fix using TypeScript and React best practices.