Frontend Engineer Interview Experience || 2.5
Adarsh Gautam
January 8, 2026
medium
Overview
This document details the resources and learning path a frontend engineer utilized to prepare for frontend interviews. The preparation encompassed JavaScript fundamentals, coding problem practice, UI design principles, and relevant tooling.
Interview Rounds
While the specific interview rounds are not detailed, the provided resources suggest a focus on the following areas:
- JavaScript Fundamentals: Understanding core concepts like closures, scope, and asynchronous programming.
- Coding Problems: Solving algorithm and data structure problems in JavaScript, particularly those related to frontend development.
- UI Design: Knowledge of UI component design, system design principles, and the ability to implement designs using React, HTML, and CSS.
- System Design: Understanding frontend system design concepts and how to apply them in practical scenarios.
- Machine Coding: Proficiency in implementing UI components and features from scratch within a specified timeframe.
Resources
The candidate utilized the following resources:
- JavaScript Fundamentals:
- javascript.info
- Namaste JavaScript Notes
- Namaste JS playlist: Season 1, Season 2
- Coding Problems:
- To Understanding JS Coding Problems: [Link]
- JS, React, CSS-HTML problems and quizzes: bigfrontend.dev
- Some Machine Coding Round Interview Questions with solutions: [Link]
- UI Design & System Design:
- Handbook which contains all the tools required for JS UI Machine Coding Problems: [Link]
- Understanding Frontend System Design: [Link]
- CodeSandbox UI System Design: [Link]
- Icons Component in ReactJs: [Link]
- Visualization Tools:
- Tool to Visualize Scopes in Js: jsbubbl.es
- JS visualizer to visualize "Call Stack", "Event Loop", "Callback Queue" and "Microtask Queue": jsv9000.app
Key Takeaways
- A strong foundation in JavaScript is crucial for frontend interviews.
- Practicing coding problems, especially those related to UI development, is essential.
- Understanding UI and system design principles is increasingly important for senior frontend roles.
- Familiarity with relevant tooling and libraries can significantly improve performance.
- Visualizing code execution through tools like scope visualizers and event loop simulators can aid in understanding complex concepts.
Original Source
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