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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

← Morgan Stanley

Mid Frontend at Morgan Stanley

FrontendMidNo offer◆ Commonly asked· 2023

A mid frontend loop. Coding-heavy early, design and behavioral later.

The loop · 5 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Validate a binary search tree.
    MidMedium◆ Commonly asked
    #tree#dfs
    PracticeLeetCode↗GeeksforGeeks↗
  • Lowest common ancestor of a binary tree.
    MidMedium◆ Commonly asked
    #tree
    PracticeLeetCode↗GeeksforGeeks↗
  • Regular expression matching.
    MidHard◆ Commonly asked
    #dp#string
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a kanban board with drag and drop.
    MidHard◆ Commonly asked
    #react#dnd
    PracticeGeeksforGeeks↗Search↗
  • Build a virtualized chat window that loads older messages.
    MidHard◆ Commonly asked
    #react#virtualization
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 1 question

Low-Level Design

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

  • Design a data-fetching cache with invalidation.
    MidHard◆ Commonly asked
    #cache#oop
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain hydration and the cost of client vs server rendering.
    MidHard◆ Commonly asked
    #ssr#perf
    PracticeGeeksforGeeks↗Search↗
  • What is tree shaking and when does it fail?
    MidMedium◆ Commonly asked
    #bundling
    PracticeGeeksforGeeks↗Search↗
  • Accessibility: how do you make a custom widget usable?
    MidMedium◆ Commonly asked
    #a11y
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Tell me about a time you disagreed and committed.
    Mid◆ Commonly asked
    #teamwork#star
  • A time you influenced a decision without authority.
    Mid◆ Commonly asked
    #influence#star

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