Frontend Interview Experience Zepto, Razorpay, Walmart - Medium

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.