Brillio

Interviewer : Niveditha Hebbar

https://youtu.be/VWCtXWcsaeM

Introduction & Background

1. Could you briefly tell me about yourself?
2. You mentioned you completed your Master’s—was it a weekend course or remote? How did you manage it with work?
3. Are you comfortable working purely as a React developer (individual contributor role)?
4. Is your experience more aligned with React compared to other technologies?
5. Have you developed React applications from scratch?
6. What kind of projects have you worked on recently?
7. Have you worked on migrating an application from PHP to React?
8. Are you currently mentoring or guiding junior developers?

Role & Project Clarity

9. Are you comfortable replacing an existing resource on an ongoing project?
10. Are you okay working in a service-based company?
11. Are you comfortable working under Agile methodology?
12. Do you have any existing offers right now?
13. If selected, how likely are you to commit to this role?

React Core Concepts

14. Which version of React are you currently working with?
15. Since when have you been working with React?
16. What optimization techniques have you implemented in your React projects?
17. How do you implement lazy loading in React?
18. How do you use React.lazy and Suspense?
19. How do you implement error boundaries?
20. Do you implement error boundaries at the app level or component level?
21. What is prop drilling?
22. How can prop drilling be avoided?
23. When should we use Context API and when should we use Redux?
24. What problems can occur if Context API is overused in large applications?

Hooks & State Management

25. Can you explain what useState does internally?
26. How does state update work in React?
27. What strategies do you use to avoid unnecessary re-renders?
28. What is the difference between useMemo and useCallback?
29. Apart from useMemo and useCallback, how else can we optimize rendering?
30. How do you identify and handle performance bottlenecks in React?

Redux

31. Have you used Redux or Redux Toolkit?
32. Can you explain the Redux architecture?
33. How does Redux work internally?
34. Can you explain Redux Saga architecture?

Testing

35. Which testing libraries have you used?
36. Have you used React Testing Library?
37. Can you write a basic unit test case for a React component?
38. How do you test whether a component is rendered correctly?

Forms & Events

39. How do you handle form inputs and validations in React?
40. How do you manage form state efficiently?

JavaScript Concepts

41. What are generator functions in JavaScript?
42. What is reconciliation in React?
43. Why do we prefer React over vanilla JavaScript?
44. What is the difference between spread and rest operators?
45. How do you handle local storage and session storage?

Performance & Compatibility

46. How do you ensure cross-browser compatibility in React apps?
47. What are polyfills and when do we use them?

Accessibility

48. How do you handle accessibility in React applications?
49. What is tabIndex and how is it used?

CSS & Responsive Design

50. How do you implement responsive layouts in React?
51. What layout systems have you used (Flexbox, Grid)?
52. Can you explain how CSS Grid works with an example?
53. How would you build a responsive grid layout in React?

Practical / Coding

54. Can you build a React app that fetches data from an API and displays it in a responsive grid?
55. How would you handle large list rendering efficiently?

Experience & Challenges

56. What is the most complex problem you have worked on so far?
57. What challenges are you currently facing in your project?

Closing

58. Do you have any questions for us?