I recently interviewed with Analyttica for a Frontend Developer role. Here’s my experience and the questions asked in all the 3 rounds.

Website Link - https://analyttica.com/

1st Round

• What is Hoisting in JavaScript? Give pseudo code for both variable hoisting and function hoisting.
• O/p Question
  function test() {
  let a = b = 10;
  }
  test();
  console.log(typeof a);
  console.log(typeof b);
• What are Closures? Explain with pseudo code.
• O/p Question
  function outer() {
  let count = 0;
  return function inner() {
  count++;
  console.log(count);
  };
  }
  const counter1 = outer();
  counter1();
  counter1();
  const counter2 = outer();
  counter2();
  counter2();
• Explain this in JavaScript.
• What are call, apply, and bind? Write pseudo code examples.
• What is a Promise? Write pseudo code to print Hello World when promise resolves.
• O/p Question
  let x = 1;
  if (function f() {}) {
  x += typeof f;
  }
  console.log(x);
• What is React ?
• What is the component Lifecycle of React?
• What all hooks are you aware of ?
• Explain useRef and useMemo.
• Difference b/w useEffect and useLayoutEffect.
• Create a Context with predefined userData and pass it down to child Component and render data on screen.
• What Libraries have you used for API Integration.
• Difference b/w fetch and axios.
• Give an API Endpoint, Integrate it using fetch and render 4 fields for each item from the Response List.
• Now give a textbox to filter data for the List.

2nd Round - This was a Tech + Managerial Interview with the VP of Operations

• Could you tell me about yourself?
• What are your expectations from our company?
• Have you used GenAI tools, and to what extent?
• If you join our company, how would you approach working with a large and complex codebase?
• What is your experience in working with clients and stakeholders?
• Do you have experience working with Agile methodology?
• We are looking for people with a growth mindset who take initiative instead of waiting for work. What is your perspective on this?
• How would you architect an application if you had to build it from scratch?
• Should a UI developer be aware of the complete business logic?
• What are your career goals, and how do they align with the company’s goals?
• If you don’t receive clear requirements from a client or stakeholder, how would you handle the situation?
• I can clearly see from your resume that you got promoted. What according to you contributed the most to your promotion ?

3rd Round

• Implement any state Management Library from Scratch. (Implemented Context)
• What is Prop Drilling, It's disadvantages.
• How does React Context solve this ?
• Disadvantages of React Context.
• Difference b/w DOM and Shallow DOM.
• What is Virtual DOM, Explain the process of Reconciliation.
• How to avoid unnecessary re-rendering ?
• What is a callback function ?
• What is HOC ?
• How can you improve your React Application ?
• Do you have experience with testing ? Black Box and white Box ?

Verdict - Selected