I cracked Swiggy — SDE (Frontend Engineer ) Interview Experience

Overview

The interview process for a Frontend Engineer position at Swiggy involved a comprehensive assessment of the candidate's technical and problem-solving skills. The candidate, possessing 1.5 years of internship experience and a background from a Tier-3 college, discovered the opportunity through getjobs.today. The evaluation spanned four rounds, including an online coding assessment, technical interviews focusing on React and JavaScript, a machine coding round, and a behavioral interview with the hiring manager.

Interview Rounds

Round 1: Online Coding Assessment (HackerRank)

• Format: 60-minute online coding test.
• The assessment included three questions of varying difficulty.
  • Question 1: Implementation of a function to identify the first non-repeating character in a string using JavaScript. This assessed knowledge of hash maps.
  • Question 2: Development of a function to flatten a nested array without leveraging built-in methods, requiring recursion.
  • Question 3: Determination of the maximum length of a chain of pairs from a provided list.
• The candidate focused on writing clean and efficient code, ultimately completing all questions, receiving a hint on the third.
• Outcome: The candidate advanced to the next stage.

Round 2: Technical Interview (React & JavaScript)

• Format: 1-hour video call with a Senior Engineer.
• The interview centered on React and JavaScript proficiency.
• Questions Asked:
  • Explanation of the React component lifecycle methods: componentDidMount, componentDidUpdate, and useEffect, accompanied by practical examples.
  • Implementation of a debounce function, with an explanation of its utility in preventing redundant API calls.
  • Description of techniques for optimizing the rendering of large lists in React, including lazy loading and virtualization using libraries like react-window.
  • Coding Task: Development of a custom hook for data fetching with a loading indicator.
• The candidate articulated a clear understanding of each concept and illustrated them with relevant examples.

Round 3: Machine Coding Round

• Format: 90-minute video call with a Lead Engineer.