theloop
CompaniesRoundsQuestionsSearchProgress
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 GitHub

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

← Klarna

Senior Frontend at Klarna

FrontendSeniorWithdrew◆ Commonly asked· 2024

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.

  • Merge intervals.
    SeniorMedium◆ Commonly asked
    #intervals#sorting
    PracticeLeetCode↗GeeksforGeeks↗
  • Insert interval.
    SeniorMedium◆ Commonly asked
    #intervals
    PracticeLeetCode↗GeeksforGeeks↗
  • Best time to buy and sell stock.
    SeniorEasy◆ Commonly asked
    #array#greedy
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a star-rating component (controlled + accessible).
    SeniorEasy◆ Commonly asked
    #react#a11y
    PracticeGeeksforGeeks↗Search↗
  • Build a kanban board with drag and drop.
    SeniorHard◆ Commonly asked
    #react#dnd
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design a video-call UI with grid and speaker views.
    SeniorHard◆ Commonly asked
    #frontend#webrtc#perf
    PracticeGeeksforGeeks↗Search↗
  • Design a large dashboard with many live widgets.
    SeniorHard◆ Commonly asked
    #frontend#realtime#perf
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Debounce vs throttle — implement one from scratch.
    SeniorMedium◆ Commonly asked
    #javascript#perf
    PracticeGeeksforGeeks↗Search↗
  • Event delegation and how bubbling/capturing work.
    SeniorEasy◆ Commonly asked
    #dom
    PracticeGeeksforGeeks↗Search↗
  • Explain how CSS-in-JS differs from utility CSS.
    SeniorEasy◆ Commonly asked
    #css
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 1 question

Hiring Manager

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

  • How do you balance tech debt against feature work?
    Senior◆ Commonly asked
    #prioritization
06

Round 06 · 2 questions

Behavioral / HR

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

  • Tell me about a time you disagreed and committed.
    Senior◆ Commonly asked
    #teamwork#star
  • Describe a time you improved a process or tool for your team.
    Senior◆ 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.