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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.

CC BY-NC 4.0 · © 2026

← Activision Blizzard

New Grad / Junior Backend at Activision Blizzard

BackendNew Grad / JuniorNo offer◆ Commonly asked· 2024

A junior backend loop. Balanced across coding, design, and collaboration.

The loop · 5 rounds

01

Round 01 · 1 question

Online Assessment

Timed online coding / aptitude screen, usually the first filter.

  • Longest common prefix among strings.
    New Grad / JuniorEasy◆ Commonly asked
    #string
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Serialize and deserialize a binary tree.
    New Grad / JuniorHard◆ Commonly asked
    #tree#dfs
    PracticeLeetCode↗GeeksforGeeks↗
  • Word search in a grid.
    New Grad / JuniorMedium◆ Commonly asked
    #backtracking#grid
    PracticeLeetCode↗GeeksforGeeks↗
  • Median of two sorted arrays.
    New Grad / JuniorHard◆ Commonly asked
    #binary-search
    PracticeLeetCode↗GeeksforGeeks↗
03

Round 03 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a mini ORM query builder (select/where/join).
    New Grad / JuniorHard◆ Commonly asked
    #parsing#sql
    PracticeGeeksforGeeks↗Search↗
  • Design and build a URL-shortener service (API + storage).
    New Grad / JuniorMedium◆ Commonly asked
    #api#hashing
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • How do you retry without amplifying load?
    New Grad / JuniorHard◆ Commonly asked
    #reliability
    PracticeGeeksforGeeks↗Search↗
  • SQL vs NoSQL — how do you choose for a given workload?
    New Grad / JuniorMedium◆ Commonly asked
    #databases
    PracticeGeeksforGeeks↗Search↗
  • How do you secure secrets and handle auth tokens?
    New Grad / JuniorMedium◆ Commonly asked
    #security
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Describe a disagreement on a code review and how it ended.
    New Grad / Junior◆ Commonly asked
    #conflict#star
  • Tell me about the hardest bug you have debugged.
    New Grad / Junior◆ Commonly asked
    #debugging#star

Practice each round across every company

  • Online Assessment
  • DSA / Coding
  • Machine Coding
  • Tech Deep-Dive
  • Behavioral / HR

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