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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

← Carta

Mid Frontend at Carta

FrontendMidWithdrew◆ Commonly asked· 2024

Mid frontend interview. 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↗
  • Permutations.
    MidMedium◆ Commonly asked
    #backtracking
    PracticeLeetCode↗GeeksforGeeks↗
  • Set matrix zeroes.
    MidMedium◆ Commonly asked
    #matrix
    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 virtualized chat window that loads older messages.
    MidHard◆ Commonly asked
    #react#virtualization
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 1 question

Low-Level Design

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

  • Design a design-token theming system.
    MidMedium◆ Commonly asked
    #design-system
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • What are React keys and why do they matter?
    MidEasy◆ Commonly asked
    #react
    PracticeGeeksforGeeks↗Search↗
  • Difference between CSS Grid and Flexbox — when to use each.
    MidEasy◆ Commonly asked
    #css#layout
    PracticeGeeksforGeeks↗Search↗
  • What causes layout thrashing and how do you avoid it?
    MidHard◆ Commonly asked
    #perf#dom
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Tell me about the most impactful project of your career.
    Mid◆ Commonly asked
    #impact#star
  • Describe a disagreement on a code review and how it ended.
    Mid◆ Commonly asked
    #conflict#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.