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Junior Frontend Developer Interview Questions

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10,716 junior frontend developer interview questions shared by candidates

HackerRank Technical Round (HTML, CSS, JavaScript, React) Semantic HTML, CSS selectors, JavaScript fundamentals React component lifecycle, state management, event handling Hooks, performance optimization in React, code splitting, accessibility Performance optimization strategies (caching, lazy loading, bundle optimization) Security best practices (XSS, CSRF, authentication/authorization) System Design High-level and Low-level system design Scalable architecture for frontend applications Design Google Sheet. Managerial Current project details and ownership Key challenges faced and how you overcame them Leadership, collaboration, and conflict resolution examples Handling deadlines, pressure, and stakeholder expectations HR Round
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Lead Frontend Engineer

Interviewed at LSEG (London Stock Exchange Group)

3.6★
Sep 9, 2025

HackerRank Technical Round (HTML, CSS, JavaScript, React) Semantic HTML, CSS selectors, JavaScript fundamentals React component lifecycle, state management, event handling Hooks, performance optimization in React, code splitting, accessibility Performance optimization strategies (caching, lazy loading, bundle optimization) Security best practices (XSS, CSRF, authentication/authorization) System Design High-level and Low-level system design Scalable architecture for frontend applications Design Google Sheet. Managerial Current project details and ownership Key challenges faced and how you overcame them Leadership, collaboration, and conflict resolution examples Handling deadlines, pressure, and stakeholder expectations HR Round

I was asked to build a sign in form using angular prior to the technical interview and during the interview I was asked about how I could make it more accessible. I was also asked questions about the major building blocks of Angular
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Frontend Engineer

Interviewed at Motorola Solutions

4.2★
Nov 26, 2023

I was asked to build a sign in form using angular prior to the technical interview and during the interview I was asked about how I could make it more accessible. I was also asked questions about the major building blocks of Angular

Round-1: Initially they given project to build and it's out of 100 I got 67 and selected for next round Round-2: On next round it's technical round they asked me about some basic technical questions like Promises, Redux, and questions from react. Got selected for next tech round Round-3: asked about my previous work experience and some basic technical questions. Round-4 (With CTO): asked me about their company and why you want to join in our company answered all of them. After last round I got rejected mail it took me 1 month process and I really hope I will get into this company a lot but they said my profile was average and my communication is not good at all.
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Frontend Developer

Interviewed at Brainstorm Force

4★
Apr 1, 2024

Round-1: Initially they given project to build and it's out of 100 I got 67 and selected for next round Round-2: On next round it's technical round they asked me about some basic technical questions like Promises, Redux, and questions from react. Got selected for next tech round Round-3: asked about my previous work experience and some basic technical questions. Round-4 (With CTO): asked me about their company and why you want to join in our company answered all of them. After last round I got rejected mail it took me 1 month process and I really hope I will get into this company a lot but they said my profile was average and my communication is not good at all.

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