React
React is a popular tool for building modern websites and apps that users love to interact with. Think of it like digital building blocks that help create smooth, fast-loading websites and apps that feel more like desktop programs than traditional websites. Created by Facebook (now Meta), React lets developers build websites piece by piece, like Lego blocks, which makes the sites easier to update and maintain. It's especially good at creating websites that update information instantly without needing to refresh the page, like social media feeds or online shopping carts. Some similar tools include Angular and Vue.js. When you see React mentioned in a resume, it usually means the candidate knows how to create modern, interactive websites.
Examples in Resumes
Developed responsive user interfaces using React and React.js
Built and maintained multiple React applications handling over 10,000 daily users
Led migration of legacy system to modern React.js architecture
Typical job title: "React Developers"
Also try searching for:
Where to Find React Developers
Online Communities
Job Boards
Events & Conferences
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you architect a large-scale React application?
Expected Answer: A senior developer should discuss organizing code into reusable components, managing data flow, state management solutions, performance optimization, and how to structure the application for scalability and maintainability.
Q: How do you handle performance optimization in React?
Expected Answer: Should explain practical ways to make React applications faster, including proper use of component updates, managing re-renders, code splitting, and using built-in performance tools.
Mid Level Questions
Q: Explain how you manage state in React applications?
Expected Answer: Should be able to explain different ways to handle data in React apps, including built-in methods and when to use additional tools for managing more complex data.
Q: How do you handle API integration in React?
Expected Answer: Should explain how to connect React applications with backend services, handling loading states, errors, and updating the interface with received data.
Junior Level Questions
Q: What is a React component and how do you create one?
Expected Answer: Should be able to explain that components are reusable pieces of interface and demonstrate basic knowledge of creating simple components.
Q: Explain the difference between props and state in React.
Expected Answer: Should understand that props are data passed to components from outside, while state is internal component data that can change over time.
Experience Level Indicators
Junior (0-2 years)
- Building basic user interface components
- Understanding component lifecycle
- Working with forms and user input
- Basic state management
Mid (2-5 years)
- Complex component architecture
- Advanced state management
- Integration with APIs
- Performance optimization
Senior (5+ years)
- Application architecture and best practices
- Team leadership and code review
- Advanced performance optimization
- Complex application state management
Red Flags to Watch For
- No understanding of modern JavaScript
- No experience with version control (like Git)
- Cannot explain basic component concepts
- No knowledge of testing practices
Related Terms
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