theloop
CompaniesRoundsQuestionsSearchProgress
Frontend prep↗
theloop

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

View source

Browse

CompaniesSearchAll rounds

Rounds

Online AssessmentDSA / CodingMachine CodingLow-Level Design

Contribute

Share an interviewReport an issueStar on GitHubFrontend interview prep ↗

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

← GitHub

Mid Frontend at GitHub

FrontendMidRejected◆ Commonly asked· 2023

Mid frontend interview. Fundamentals mattered as much as getting to an answer.

The loop · 5 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Kth largest element in an array.
    MidMedium◆ Commonly asked
    #heap#quickselect
    PracticeLeetCode↗GeeksforGeeks↗
  • Diameter of a binary tree.
    MidEasy◆ Commonly asked
    #tree#dfs
    PracticeLeetCode↗GeeksforGeeks↗
  • Container with most water.
    MidMedium◆ Commonly asked
    #two-pointers#array
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build an accessible accordion with single/multi open.
    MidMedium◆ Commonly asked
    #react#a11y
    PracticeGeeksforGeeks↗Search↗
  • Build a typeahead with in-flight request cancellation.
    MidMedium◆ Commonly asked
    #react#async
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 1 question

Low-Level Design

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

  • Model the state machine for a checkout flow.
    MidMedium◆ Commonly asked
    #state-machine
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Difference between controlled and uncontrolled inputs.
    MidEasy◆ Commonly asked
    #react#forms
    PracticeGeeksforGeeks↗Search↗
  • Explain server components vs client components.
    MidHard◆ Commonly asked
    #react#ssr
    PracticeGeeksforGeeks↗Search↗
  • How does the browser critical rendering path work?
    MidMedium◆ Commonly asked
    #browser#perf
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Tell me about a time you led without a title.
    Mid◆ Commonly asked
    #leadership#star
  • Tell me about a time you simplified something overly complex.
    Mid◆ Commonly asked
    #judgment#star

Practice each round across every company

  • DSA / Coding
  • Machine Coding
  • Low-Level Design
  • 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.