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

← JetBrains

Senior Full-stack at JetBrains

Full-stackSeniorWithdrew◆ Commonly asked· 2024

Senior fullstack interview. Fundamentals mattered as much as getting to an answer.

The loop · 6 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Find minimum in rotated sorted array.
    SeniorMedium◆ Commonly asked
    #binary-search
    PracticeLeetCode↗GeeksforGeeks↗
  • Climbing stairs.
    SeniorEasy◆ Commonly asked
    #dp
    PracticeLeetCode↗GeeksforGeeks↗
  • Subtree of another tree.
    SeniorEasy◆ Commonly asked
    #tree#dfs
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Parse and evaluate a simple expression/DSL.
    SeniorMedium◆ Commonly asked
    #parsing
    PracticeGeeksforGeeks↗Search↗
  • Build an image carousel with autoplay and swipe.
    SeniorMedium◆ Commonly asked
    #react#ui
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design a job scheduler / cron service.
    SeniorMedium◆ Commonly asked
    #queues#scheduling
    PracticeGeeksforGeeks↗Search↗
  • Design a ride-sharing service like Uber.
    SeniorHard◆ Commonly asked
    #geospatial#matching
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Difference between CSS Grid and Flexbox — when to use each.
    SeniorEasy◆ Commonly asked
    #css#layout
    PracticeGeeksforGeeks↗Search↗
  • localStorage vs sessionStorage vs cookies — when to use each?
    SeniorEasy◆ Commonly asked
    #browser
    PracticeGeeksforGeeks↗Search↗
  • Explain Core Web Vitals (LCP, CLS, INP) and how to improve them.
    SeniorHard◆ Commonly asked
    #perf
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 1 question

Hiring Manager

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

  • How do you keep a team unblocked and shipping?
    Senior◆ Commonly asked
    #leadership
06

Round 06 · 2 questions

Behavioral / HR

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

  • How do you get up to speed on an unfamiliar codebase?
    Senior◆ Commonly asked
    #learning
  • Tell me about a time you went above and beyond for a customer.
    Senior◆ Commonly asked
    #customer#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.