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I will fix react next js typescript and responsive CSS bugs
Pavlo Yatsenko
About this gig
Are React or Nextjs bugs slowing down your website? I will diagnose and fix frontend issues with clean, maintainable code.
I can help with:
React and Nextjs component errors
TypeScript and JavaScript bugs
CSS, Tailwind and responsive layout issues
Forms, validation and broken UI interactions
API integration errors and data display problems
Performance and browser compatibility issues
You will receive tested source-code changes, a clear summary of what was fixed, and practical recommendations when needed. Please message me with the issue details, screenshots, expected behavior and repository access before ordering if the scope is unclear. I do not promise fixes for unavailable third-party services, but I will explain any external limitation clearly.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Pavlo Yatsenko
Pavlo Yatsenko
React Nextjs Frontend Developer
- FromUkraine
- Member sinceJan 2026
Languages
Russian, Ukrainian, English
I help startups and small businesses fix React and Next.js problems and turn Figma designs or existing websites into fast, production-ready frontends. With 4+ years of experience in React, Next.js, TypeScript, and JavaScript, I build responsive interfaces, integrate REST APIs, improve Core Web Vitals, and create reusable components with clean structure. You will receive maintainable source code, clear progress updates, cross-browser testing, and a practical solution matched to your scope. Send me your requirements or bug details, and I will suggest the right approach before you order.
My Portfolio
FAQ
What do you need to start?
Please send the issue description, screenshots or a short video, expected behavior, and access to the relevant source code or repository.
What counts as one bug?
One bug is one clearly defined issue with one expected result. Related symptoms from the same root cause are usually handled together.
Can you fix third-party API or CORS issues?
I can diagnose frontend integration, request, authentication, and CORS-related problems. Server or provider changes may require backend access.
Do you test across devices and browsers?
Yes. I test the affected flow at relevant desktop and mobile sizes and in modern browsers agreed for the order.
