I will build or fix your react or nextjs web app with typescript

T
timur_kharkov
T
timur_kharkov
Timur Kharkov
build or fix your react or nextjs web app with typescript
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build or fix your react or nextjs web app with typescript
Full Screen
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build or fix your react or nextjs web app with typescriptbuild or fix your react or nextjs web app with typescriptbuild or fix your react or nextjs web app with typescript

About this gig

Need a React / Next.js developer who writes clean, typed code and ships on time? I'm a senior front-end engineer with 4.5 years on 8+ production products: admin dashboards, client portals, SaaS apps, fintech KYC flows.


What I can do

  • Fix bugs, performance issues and TypeScript errors in your existing app
  • Turn your Figma into responsive, pixel-accurate React / Next.js pages
  • Integrate REST or GraphQL APIs (Apollo Client, React Query, codegen)
  • Complex forms and validation (react-hook-form, Zod), data tables, charts
  • Material UI, Tailwind CSS, i18n, authentication flows


Proof: my own product ShynOk, a subscription app with recurring payments, is live on the App Store and Google Play (NestJS, GraphQL, PostgreSQL, React Native).


What you get: clean Git history (PR or zip), a short summary of changes and instructions to run the project.


Please message me before ordering. I'll review your code or design and confirm scope, price and timeline.

  • Website type

    • Saas

  • Programming language

    • JavaScript
    • TypeScript
    • React
    • Tailwind CSS
    • Node.js

  • Website features

    • Analytics
    • Form
    • Dashboard
    • Landing page
    • User Authentication
    • Admin Panel
    • API integration
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 Timur Kharkov

Timur Kharkov

Senior React and NextJS Developer with TypeScript

  • FromUkraine
  • Member sinceSep 2026

  • Languages

    Ukrainian, English
I build React, Next.js and TypeScript apps for product teams: admin dashboards, client portals and SaaS front-ends, plus the NestJS / Node.js back-end when needed. 4.5 years as a core engineer on 8+ production products (fintech with KYC, HR SaaS, health, data publishing), ~5,000 commits. My own app ShynOk, with recurring payments, is live on the App Store and Google Play (NestJS, GraphQL, PostgreSQL, React Native). I also work with Angular, Ruby on Rails, Python and Playwright. Clear English, EU time zone. Message me before ordering to confirm scope and timeline.

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