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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

← Zapier

New Grad / Junior Frontend at Zapier

FrontendNew Grad / JuniorOffer◆ Commonly asked· 2024

Junior frontend interview. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

01

Round 01 · 1 question

Online Assessment

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

  • Validate an IP address (IPv4 / IPv6).
    New Grad / JuniorMedium◆ Commonly asked
    #string#parsing
    PracticeGeeksforGeeks↗Search↗
02

Round 02 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Clone a graph.
    New Grad / JuniorMedium◆ Commonly asked
    #graph#dfs
    PracticeLeetCode↗GeeksforGeeks↗
  • Container with most water.
    New Grad / JuniorMedium◆ Commonly asked
    #two-pointers#array
    PracticeLeetCode↗GeeksforGeeks↗
  • Implement a trie (prefix tree).
    New Grad / JuniorMedium◆ Commonly asked
    #trie
    PracticeLeetCode↗GeeksforGeeks↗
03

Round 03 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a carousel/image slider.
    New Grad / JuniorMedium◆ Commonly asked
    #react#ui
    PracticeGeeksforGeeks↗Search↗
  • Build a stopwatch with lap times.
    New Grad / JuniorEasy◆ Commonly asked
    #react#state
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain `useEffect` dependencies and common pitfalls.
    New Grad / JuniorMedium◆ Commonly asked
    #react#hooks
    PracticeGeeksforGeeks↗Search↗
  • Closures and the module pattern — with an example.
    New Grad / JuniorEasy◆ Commonly asked
    #javascript#closures
    PracticeGeeksforGeeks↗Search↗
  • How does React reconciliation / the diffing algorithm work?
    New Grad / JuniorMedium◆ Commonly asked
    #react#fiber
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Tell me about a time you had to say no to a stakeholder.
    New Grad / Junior◆ Commonly asked
    #influence#star
  • Describe a goal you set and how you achieved it.
    New Grad / Junior◆ Commonly asked
    #ownership#star

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