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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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Online AssessmentDSA / CodingMachine CodingLow-Level Design

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

MIT · © 2026

← Spotify

Mid Frontend at Spotify

FrontendMidOffer◆ Commonly asked· 2025

A mid frontend loop. Coding-heavy early, design and behavioral later.

The loop · 5 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Lowest common ancestor of a binary tree.
    MidMedium◆ Commonly asked
    #tree
    PracticeLeetCode↗GeeksforGeeks↗
  • Longest palindromic substring.
    MidMedium◆ Commonly asked
    #string#dp
    PracticeLeetCode↗GeeksforGeeks↗
  • Longest substring without repeating characters.
    MidMedium◆ Commonly asked
    #sliding-window#string
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a nested, collapsible comment thread.
    MidMedium◆ Commonly asked
    #react#recursion
    PracticeGeeksforGeeks↗Search↗
  • Build a "Wordle" clone with keyboard input.
    MidMedium◆ Commonly asked
    #react#state
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 1 question

Low-Level Design

Object-oriented / low-level design of a focused module.

  • Design a keyboard-shortcut registry.
    MidMedium◆ Commonly asked
    #oop
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain server components vs client components.
    MidHard◆ Commonly asked
    #react#ssr
    PracticeGeeksforGeeks↗Search↗
  • Explain `this` binding and the call/apply/bind trio.
    MidMedium◆ Commonly asked
    #javascript
    PracticeGeeksforGeeks↗Search↗
  • Explain the difference between == and === and coercion.
    MidEasy◆ Commonly asked
    #javascript
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

  • Describe a time you had to deliver bad news.
    Mid◆ Commonly asked
    #communication#star
  • Tell me about the most impactful project of your career.
    Mid◆ Commonly asked
    #impact#star

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.