My Flipkart UI-2 Frontend Interview Experience: 2025

Overview

This document details a candidate's experience interviewing for a UI-2 Frontend Engineer position at Flipkart. The interview process consisted of multiple rounds, covering machine coding, code review, data structures and algorithms, UI-Tech skills, and product sense. The candidate's journey provides valuable insights into the expectations and challenges of frontend interviews at Flipkart.

Interview Rounds

Round 1: Machine Coding Challenge

The initial round involved a 90-minute machine coding challenge conducted via Google Meet. The candidate was tasked with building an application from scratch using only vanilla JavaScript, HTML, and CSS. Frameworks and libraries were prohibited. The primary evaluation criterion was the delivery of fully functional features. A clean, modular coding approach was emphasized.

Round 2: Code Review

Following the machine coding round, the candidate participated in a code review with Flipkart engineers. The engineers examined the submitted solution, asking the candidate to explain their implementation choices. The review also included discussions on JavaScript fundamentals and a demonstration of any optional features implemented.

Round 3: Data Structures & Algorithms

This round focused on data structures and algorithms. The candidate was presented with two problems:

• LRU Cache (Least Recently Used mechanism)
• House Robber (Dynamic Programming problem)

The assessment emphasized clean code, proper handling of edge cases, and optimization techniques.

Round 4: UI-Tech

The UI-Tech round involved a deep dive into frontend engineering skills. The topics covered included:

• JavaScript questions on Promises, event loop behavior, and console log output analysis.
• Writing a polyfill for Array.prototype.reduce.
• Implementing a UI scenario using plain JavaScript.
• Explaining and live-coding a Higher-Order Component in React.

Round 5: Product Sense — Hiring Manager

The final round assessed the candidate's product sense. The candidate was challenged to design an internal tool for a flight management dashboard. This involved considering user needs and translating them into practical features.

Key Takeaways

• A strong foundation in vanilla JavaScript is essential.
• The ability to code under time pressure is crucial.
• Solutions should be modular and maintainable.
• Effective communication of ideas is paramount.
• A comprehensive understanding of fundamental data structures and algorithms is required.
• Practical experience with React and UI development is highly valued.
• Product thinking and user-centric design are important considerations.