Mihai Dobre
React UI Systems UK

Frontend Development

Professional frontend development services. React applications, UI component libraries, performance optimisation, accessibility, and responsive engineering built for modern web experiences.

Component Tree
<App/>
<Layout/>
Services

What I do

Full-service frontend development covering React applications, UI component libraries, performance optimisation, accessibility compliance, responsive engineering, and state management. Building modern user interfaces that perform.

React Applications

Building single-page applications with React and TypeScript. Component-based architecture, efficient state management, and clean code patterns.

UI Component Libraries

Creating reusable, documented component libraries with consistent design systems. Storybook integration and accessibility testing included.

Performance Optimisation

Optimising frontend performance with code splitting, lazy loading, memoisation, and bundle analysis. Core Web Vitals improvements and Lighthouse audits.

Responsive Engineering

Mobile-first responsive development that works seamlessly across all devices. Fluid layouts, adaptive components, and progressive enhancement.

Accessibility (a11y)

WCAG 2.1 AA compliance with semantic HTML, ARIA attributes, keyboard navigation, and screen reader testing. Inclusive design for all users.

State Management

Implementing scalable state management with Redux Toolkit, Zustand, or React Query. Server state, client state, and form state handled efficiently.

Business Impact

Problems I solve

Helping businesses build fast, accessible, and maintainable frontend applications. Moving from slow, inconsistent interfaces to performant, scalable UI systems that improve user experience.

The Problem

Slow, unresponsive frontend affecting user experience and conversion rates

The Solution

Performance auditing and optimisation including code splitting, lazy loading, image optimisation, and efficient rendering patterns. Measurable Core Web Vitals improvements. See [website performance optimisation](/website-performance-optimisation) for broader performance services.

Fast, responsive interface with improved user engagement

The Problem

Inconsistent UI across the application with duplicated code

The Solution

Building a component library with consistent styling, behaviour, and documentation. Reusable components that ensure design system adherence and reduce development time.

Consistent, maintainable UI with faster feature development

The Problem

Poor mobile experience driving away mobile users

The Solution

Mobile-first responsive development with touch-friendly interactions, adaptive layouts, and progressive enhancement. Testing across devices and screen sizes.

Seamless experience across all devices and screen sizes

The Problem

Accessibility issues excluding users and creating legal risk

The Solution

Implementing WCAG 2.1 AA compliance with semantic HTML, proper focus management, keyboard navigation, and screen reader compatibility. Accessibility testing throughout development.

Inclusive application accessible to all users
Tech Stack

Technologies I work with

Modern React ecosystem and frontend tooling. Using current best practices and proven tools for efficient, type-safe, and accessible development.

React Core

React 18+HooksContext APIReact RouterSuspenseError Boundaries

TypeScript & JavaScript

TypeScriptJavaScript ES6+JSDocType SafetyGeneric TypesUtility Types

State Management

Redux ToolkitZustandRecoilReact QuerySWRJotai

Styling

Tailwind CSSCSS ModulesStyled ComponentsEmotionSassVanilla CSS

Testing

JestReact Testing LibraryVitestCypressPlaywrightMSW

Build & Tooling

ViteWebpackesbuildTurbopackBabelESLint
Process

How it works

A structured approach to frontend development ensuring your requirements are met. Regular testing and communication throughout the project.

01

Discovery

Understanding your frontend requirements, target users, and technical needs. Discussing architecture, design system, integrations, and performance expectations.

02

Planning

Creating component architecture, state management strategy, and project timeline. Setting up development environment with tooling and linting.

03

Development

Building your React application iteratively. Developing components, implementing state management, and integrating APIs with regular testing and updates.

04

Launch & Support

Deploying to production, optimising performance, and providing documentation. Ongoing support for maintenance and feature additions.

FAQ

Frequently asked questions

Common questions about frontend development. If you have a specific question not covered here, feel free to get in touch.

React is ideal for interactive web applications, dashboards, single-page applications, and projects requiring a component-based architecture. It is particularly suitable when you need a fast, responsive user interface with complex state management or when building a design system with reusable components.

Yes, TypeScript is my default choice for React projects. It provides type safety, better IDE support with autocomplete, and catches errors at compile time rather than runtime. This results in more maintainable code, fewer bugs, and better documentation through type definitions.

Performance is built in through code splitting, lazy loading components, memoisation with React.memo and useMemo, efficient re-rendering patterns, and bundle size optimisation. I use profiling tools like React DevTools and Lighthouse to identify and fix bottlenecks during development.

Accessibility is integrated throughout development - semantic HTML, proper heading hierarchy, ARIA attributes where needed, keyboard navigation, focus management, and screen reader testing. I aim for WCAG 2.1 AA compliance to ensure your application is usable by everyone.

Yes. I create reusable component libraries with consistent styling and behaviour. These can be documented with Storybook, tested for accessibility, and published as a package for your team to use across projects, ensuring consistency and development efficiency.

Yes. I regularly work with existing projects for improvements, feature additions, or modernisation. This includes refactoring legacy code, migrating to newer React versions, improving performance, updating dependencies, and implementing best practices.

Explore More

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Full-Stack Development

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Backend Development

API and server-side architecture.

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Ready to discuss your project?

Tell me about your frontend requirements. I will review your needs and get back to you with initial thoughts and next steps.