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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

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Staff+ Full-stack at Discord

Full-stackStaff+No offer◆ Commonly asked· 2024

5-round staff fullstack process. 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.

  • Pacific Atlantic water flow.
    Staff+Medium◆ Commonly asked
    #dfs#grid
    PracticeLeetCode↗GeeksforGeeks↗
  • Top K frequent elements.
    Staff+Medium◆ Commonly asked
    #heap#hashmap
    PracticeLeetCode↗GeeksforGeeks↗
  • Subsets.
    Staff+Medium◆ Commonly asked
    #backtracking
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 1 question

Low-Level Design

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

  • Design a notification service (channels + templates).
    Staff+Medium◆ Commonly asked
    #oop
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design a scalable frontend for an infinite feed (data, caching, rendering).
    Staff+Hard◆ Commonly asked
    #frontend#virtualization#cache
    PracticeGeeksforGeeks↗Search↗
  • Design a webhook delivery system with retries.
    Staff+Medium◆ Commonly asked
    #reliability#queues
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 1 question

Hiring Manager

Scope, ownership, and role-fit discussion with the manager.

  • How do you run an incident and the postmortem after?
    Staff+◆ Commonly asked
    #reliability#process
05

Round 05 · 2 questions

Behavioral / HR

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

  • Tell me about a time you had to learn something quickly.
    Staff+◆ Commonly asked
    #learning#star
  • Describe a time you disagreed with a teammate. How did it resolve?
    Staff+◆ Commonly asked
    #conflict#star

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