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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

← Northrop Grumman

New Grad / Junior Frontend at Northrop Grumman

FrontendNew Grad / JuniorOffer◆ Commonly asked· 2023

A junior frontend loop. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

01

Round 01 · 1 question

Online Assessment

Timed online coding / aptitude screen, usually the first filter.

  • Longest common prefix among strings.
    New Grad / JuniorEasy◆ Commonly asked
    #string
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Word search in a grid.
    New Grad / JuniorMedium◆ Commonly asked
    #backtracking#grid
    PracticeLeetCode↗GeeksforGeeks↗
  • Longest palindromic substring.
    New Grad / JuniorMedium◆ Commonly asked
    #string#dp
    PracticeLeetCode↗GeeksforGeeks↗
  • Coin change — fewest coins to make an amount.
    New Grad / JuniorMedium◆ Commonly asked
    #dp
    PracticeLeetCode↗GeeksforGeeks↗
03

Round 03 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a nested, collapsible comment thread.
    New Grad / JuniorMedium◆ Commonly asked
    #react#recursion
    PracticeGeeksforGeeks↗Search↗
  • Build a to-do app with filters and localStorage persistence.
    New Grad / JuniorEasy◆ Commonly asked
    #react#state
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • How does React batching and the render phase work?
    New Grad / JuniorHard◆ Commonly asked
    #react
    PracticeGeeksforGeeks↗Search↗
  • Accessibility: how do you make a custom widget usable?
    New Grad / JuniorMedium◆ Commonly asked
    #a11y
    PracticeGeeksforGeeks↗Search↗
  • Explain `this` binding and the call/apply/bind trio.
    New Grad / JuniorMedium◆ Commonly asked
    #javascript
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Describe a time you had to deliver bad news.
    New Grad / Junior◆ Commonly asked
    #communication#star
  • Tell me about receiving hard feedback and acting on it.
    New Grad / Junior◆ Commonly asked
    #feedback#star

Practice each round across every company

  • Online Assessment
  • DSA / Coding
  • Machine Coding
  • 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.