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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.

MIT · © 2026

← Nubank

Staff+ Frontend at Nubank

FrontendStaff+Withdrew◆ Commonly asked· 2024

Staff frontend interview. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Longest substring without repeating characters.
    Staff+Medium◆ Commonly asked
    #sliding-window#string
    PracticeLeetCode↗GeeksforGeeks↗
  • Word search II.
    Staff+Hard◆ Commonly asked
    #trie#backtracking
    PracticeLeetCode↗GeeksforGeeks↗
  • Meeting rooms II — minimum rooms required.
    Staff+Medium◆ Commonly asked
    #heap#intervals
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 1 question

Low-Level Design

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

  • Design a client-side event bus / pub-sub.
    Staff+Medium◆ Commonly asked
    #pub-sub#oop
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

System Design

High-level architecture of a large-scale system.

  • Design a job scheduler / cron service.
    Staff+Medium◆ Commonly asked
    #queues#scheduling
    PracticeGeeksforGeeks↗Search↗
  • Design an accessible internationalized form system.
    Staff+Medium◆ Commonly asked
    #frontend#a11y#i18n
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 1 question

Hiring Manager

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

  • How do you balance tech debt against feature work?
    Staff+◆ Commonly asked
    #prioritization
05

Round 05 · 2 questions

Behavioral / HR

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

  • Describe a time you disagreed with a teammate. How did it resolve?
    Staff+◆ Commonly asked
    #conflict#star
  • How do you get up to speed on an unfamiliar codebase?
    Staff+◆ Commonly asked
    #learning

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.