React

React Developer in Poland

Development, support and refinement of React applications: single-page apps, dashboards and interactive interfaces. Reusable component libraries, clean state management and solid backend integration - with one accountable specialist.

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What I build with React

React is my main library for interactive interfaces - when a website needs to behave like an application. I build single-page apps, admin dashboards, customer portals and complex forms with reusable components, predictable state and smooth UX.

Many React requests are refinement and rescue: adding features to an existing app, untangling messy component trees, fixing re-render and performance issues, and connecting the frontend to REST or GraphQL backends. I also build new apps from scratch with a clean architecture.

I work as an independent developer - you communicate directly with me, with clear estimates and full responsibility for the architecture and result.

Single-page apps & dashboards

  • Admin panels and analytics dashboards
  • Customer portals and web apps
  • SaaS interfaces and control panels
  • Routing with React Router

Component libraries

  • Reusable UI kits and design systems
  • Accessible, typed components
  • Storybook documentation
  • Tailwind, MUI or styled-components

State management

  • Context API for simple cases
  • Redux Toolkit and Zustand
  • React Query / TanStack Query
  • Predictable, debuggable data flow

Backend integration

  • REST and GraphQL APIs
  • Auth, JWT and protected routes
  • Forms, validation and file uploads
  • Real-time updates with WebSockets

Refinement & performance

  • Fixing unnecessary re-renders
  • Code splitting and lazy loading
  • Memoization and bundle size cuts
  • Refactoring legacy class components

Quality & support

  • TypeScript and strict typing
  • Tests with Vitest / Testing Library
  • ESLint, Prettier and CI/CD
  • Ongoing maintenance and new features
ReactTypeScriptReduxNext.jsViteReact QueryTailwindJavaScriptGraphQLGit

Why React and why me

React powers most modern interactive interfaces - a huge ecosystem, reusable components and a talent pool that makes it easy to maintain. I write clean, typed, tested React that your team (or the next developer) can build on.

Reusable by design

Component-based architecture means faster development and a consistent, maintainable UI across the whole app.

Typed and tested

TypeScript and tests catch bugs early and keep the codebase safe to change as the product grows.

Fast interfaces

I profile and optimize renders, bundles and data fetching so the app stays snappy even as it scales.

Integrates with anything

React plugs into any backend or headless CMS through clean REST or GraphQL - so your frontend stays independent.

Work directly with a specialist

No middlemen: you communicate directly with me - from architecture to launch and support.

Long-term support

I maintain the app after launch: updates, fixes and new features as your product grows.

Viktar Liukevich

About me

I'm Viktar Liukevich

Full-stack developer · 15+ years creating web

I'm a React developer based in Warsaw. I build, support and refine React applications: single-page apps, dashboards, portals and component libraries - with clean state management and typed, tested code.
LIUKIT is my personal brand. You work directly with me: frontend architecture, component design, API integration and deployment - from the spec to production and ongoing development.
A lot of my React work is rescue and refactoring: untangling messy component trees, fixing re-render and performance problems, migrating class components to hooks and adding tests.
Based in Warsaw, I work with clients in Poland, Europe, the UAE and the USA - in English, Polish or Russian.
300+
Completed Projects
90+
Clients
10+
Partners

Advantages

  • 15+ years working for myself
  • Wide technology stack
  • Rapid development
  • Warranty and support
  • Global quality standards
  • Working with clients worldwide
  • Innovative technological solutions