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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

← Ather Energy

Mid Full-stack at Ather Energy

Full-stackMidOffer◆ Commonly asked· 2023

A mid fullstack loop. Balanced across coding, design, and collaboration.

The loop · 5 rounds

01

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Construct binary tree from preorder and inorder traversal.
    MidMedium◆ Commonly asked
    #tree#recursion
    PracticeLeetCode↗GeeksforGeeks↗
  • Invert a binary tree.
    MidEasy◆ Commonly asked
    #tree
    PracticeLeetCode↗GeeksforGeeks↗
  • Find median from data stream.
    MidHard◆ Commonly asked
    #heap#design
    PracticeLeetCode↗GeeksforGeeks↗
02

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build an image carousel with autoplay and swipe.
    MidMedium◆ Commonly asked
    #react#ui
    PracticeGeeksforGeeks↗Search↗
  • Build a color-picker with hex/rgb sync.
    MidMedium◆ Commonly asked
    #react#ui
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 1 question

Low-Level Design

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

  • Design a reusable form-validation library API.
    MidMedium◆ Commonly asked
    #oop#api-design
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain connection pooling and why it matters.
    MidMedium◆ Commonly asked
    #databases
    PracticeGeeksforGeeks↗Search↗
  • Difference between controlled and uncontrolled inputs.
    MidEasy◆ Commonly asked
    #react#forms
    PracticeGeeksforGeeks↗Search↗
  • How does the browser critical rendering path work?
    MidMedium◆ Commonly asked
    #browser#perf
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

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

  • Describe something you shipped that you were not proud of.
    Mid◆ Commonly asked
    #tradeoffs#star
  • Tell me about a time you led without a title.
    Mid◆ Commonly asked
    #leadership#star

Practice each round across every company

  • DSA / Coding
  • Machine Coding
  • Low-Level Design
  • 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.