#frontend#interview
Frontend Interview Experience Zepto, Razorpay, Walmart - Medium
Web Author
June 9, 2026
medium
A comprehensive look into the interview loops of top-tier product companies for a Frontend Engineer with 2.5 years of experience. The candidate navigated multiple offers by mastering core JavaScript fundamentals, React architecture, and system design principles.
Interview Round
Interview Round
Interview Round
Interview Round
Interview Round
Key Takeaways
- Master Vanilla JS machine coding (Tabs, Accordions, Progress Bars) before jumping into React frameworks.
- Be prepared for 'Quiz' rounds involving classic logic puzzles like the 3-horse race or red/blue marbles.
- Deep dive into React performance optimization, specifically handling paginated dropdowns and avoiding CSS class clashes.
- Understand the 'Atomic Design' methodology for UI component management as it is a frequent HLD topic.
- Practice implementing polyfills and custom hooks (useFetch, useLocalStorage) from scratch.
Preparation Tips
- Solve classic GFG puzzles to clear initial screening rounds that test logical reasoning.
- Practice 'Output-based' questions focusing on closures, hoisting, and the 'this' keyword.
- Build common UI components (Modal, Infinite Scroll, Transfer List) using only Vanilla JS to demonstrate DOM manipulation skills.
- Prepare for HLD/LLD discussions by studying UI architecture and performance optimization strategies for slow-loading apps.
Original Source
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