Frontend Web Developer

Role & responsibilities

Core Frontend Technologies

• JavaScript (ES6+)

  - Modern JavaScript syntax and features

• TypeScript

  - Static typing for JavaScript

• HTML5

  - Semantic markup and accessibility

• CSS3

  - Modern styling including Grid, Flexbox

• Responsive Design

  - Mobile-first, cross-browser compatibility

• Progressive Web Apps (PWA)

  - Service workers, offline functionality

React Ecosystem

• React

  - Component-based UI library

• React Hooks

  - useState, useEffect, useContext, custom hooks

• React Router

  - Client-side routing

• Redux/Redux Toolkit

  - State management

• Context API

  - Built-in state management

• JSX

  - JavaScript XML syntax

• React Testing Library

  - Component testing

• Next.js

  - Full-stack React framework

• Gatsby

  - Static site generator

• React Native

  - Mobile development

Tailwind CSS & Styling

• Tailwind CSS

  - Utility-first CSS framework

• PostCSS

  - CSS processing tool

• Styled Components

  - CSS-in-JS library

• Emotion

  - CSS-in-JS library

• SASS/SCSS

  - CSS preprocessor

• CSS Modules

  - Scoped CSS

• Design Systems

  - Component libraries, style guides

Advanced Frontend Concepts

• Server-Side Rendering (SSR)

  - SEO optimization

• Static Site Generation (SSG)

  - Pre-built pages

• Code Splitting

  - Bundle optimization

• Lazy Loading

  - Performance optimization

• Web Performance

  - Core Web Vitals, optimization

• Accessibility (a11y)

  - WCAG compliance, screen readers

• Micro-frontends

  - Modular architecture

• WebAssembly (WASM)

  - High-performance web applications

Build Tools & Development

• Webpack

  - Module bundler

• Vite

  - Fast build tool

• Babel

  - JavaScript compiler

• ESLint

  - Code linting

• Prettier

  - Code formatting

• npm/yarn/pnpm

  - Package managers

• Husky

  - Git hooks

• Module Federation

  - Micro-frontend architecture

Testing & Quality Assurance

• Jest

  - JavaScript testing framework

• Cypress

  - End-to-end testing

• Playwright

  - Cross-browser testing

• Storybook

  - Component development environment

• Unit Testing

  - Component testing

• Integration Testing

  - Feature testing

• Test-Driven Development (TDD)

  - Development methodology

Version Control & Collaboration

• Git

  - Version control

• GitHub/GitLab

  - Code repositories

• Pull Requests

  - Code review process

• Branching Strategies

  - Git flow, feature branches

• CI/CD

  - Continuous integration/deployment

API & Data Management

• REST APIs

  - HTTP methods, status codes

• GraphQL

  - Query language for APIs

• Apollo Client

  - GraphQL client

• React Query/TanStack Query

  - Data fetching

• Axios

  - HTTP client

• WebSockets

  - Real-time communication

• JSON

  - Data interchange format

Performance & Optimization

• Core Web Vitals

  - LCP, FID, CLS metrics

• Bundle Analysis

  - Webpack bundle analyzer

• Tree Shaking

  - Dead code elimination

• Image Optimization

  - WebP, lazy loading

• Caching Strategies

  - Browser, service worker caching

• Critical Rendering Path

  - Performance optimization

Modern Development Practices

• Component-Driven Development

  - Reusable components

• Atomic Design

  - Design methodology

• Agile/Scrum

  - Development methodologies

• Cross-Browser Testing

  - Browser compatibility

• Mobile-First Design

  - Responsive development

• SEO Optimization

  - Search engine optimization

Emerging Technologies

• Web Components

  - Custom elements

• Jamstack

  - Modern web architecture

• Headless CMS

  - Content management

• Edge Computing

  - CDN optimization

• WebRTC

  - Real-time communication

• Web3/Blockchain

  - Decentralized applications

Preferred candidate profile