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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

← Box

Senior Frontend at Box

FrontendSeniorRejected◆ Commonly asked· 2023

A senior frontend loop. Fast-paced; expect follow-ups that push on depth.

The loop · 6 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Rotting oranges.
    SeniorMedium◆ Commonly asked
    #bfs#grid
    PracticeLeetCode↗GeeksforGeeks↗
  • Set matrix zeroes.
    SeniorMedium◆ Commonly asked
    #matrix
    PracticeLeetCode↗GeeksforGeeks↗
  • Find minimum in rotated sorted array.
    SeniorMedium◆ Commonly asked
    #binary-search
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a multi-step form with validation.
    SeniorMedium◆ Commonly asked
    #react#forms
    PracticeGeeksforGeeks↗Search↗
  • Build a nested checkbox tree with indeterminate state.
    SeniorHard◆ Commonly asked
    #react#recursion
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design client-side state and data-fetching for a large SPA.
    SeniorHard◆ Commonly asked
    #frontend#state#caching
    PracticeGeeksforGeeks↗Search↗
  • Design an accessible internationalized form system.
    SeniorMedium◆ Commonly asked
    #frontend#a11y#i18n
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain `this` binding and the call/apply/bind trio.
    SeniorMedium◆ Commonly asked
    #javascript
    PracticeGeeksforGeeks↗Search↗
  • Debounce vs throttle — implement one from scratch.
    SeniorMedium◆ Commonly asked
    #javascript#perf
    PracticeGeeksforGeeks↗Search↗
  • How do CSS specificity and the cascade resolve conflicts?
    SeniorMedium◆ Commonly asked
    #css
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 1 question

Hiring Manager

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

  • How do you set technical direction for a team?
    Senior◆ Commonly asked
    #leadership#strategy
06

Round 06 · 2 questions

Behavioral / HR

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

  • Describe a disagreement on a code review and how it ended.
    Senior◆ Commonly asked
    #conflict#star
  • Describe handling a tight deadline with competing priorities.
    Senior◆ Commonly asked
    #prioritization#star

Practice each round across every company

  • DSA / Coding
  • Machine Coding
  • System Design
  • Tech Deep-Dive
  • Hiring Manager
  • 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.