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@josethz00
josethz00 / sr-frontend-interview-questions-answered.md
Last active March 14, 2026 13:58
Sr. Frontend Interview Questions

Senior Frontend Interview Questions

Some questions about frontend development that might be in your next job interview. The questions were formulated by @mauvieira, a super senior fullstack developer

General Frontend

  • What are the strategies we can use to optimize the performance of web applications?

    • CDNs, GraphQL (maybe) to reduce overfetching, improve backend performance, use SSR and/or SSG, lazy loading for loading assets only when it's needed, minimize and compress HTML, CSS and JS files, and optimize images by compressing and resizing them.

  • What are Web Vitals (LCP, FID, CLS)? And how are they applied in the real world?

@paulfranco
paulfranco / NodeJS Interview Questions.md
Last active March 11, 2026 09:42

Interview Questions

Node.js

Q1: What do you mean by Asynchronous API? ☆☆

Answer: All APIs of Node.js library are aynchronous that is non-blocking. It essentially means a Node.js based server never waits for a API to return data. Server moves to next API after calling it and a notification mechanism of Events of Node.js helps server to get response from the previous API call.

Source: tutorialspoint.com