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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

← UST

Senior Backend at UST

BackendSeniorRejected◆ Commonly asked· 2025

Campus-style senior backend interview. Aptitude screen first, then technical fundamentals and HR.

The loop · 4 rounds

01

Round 01 · 2 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Count the frequency of each character in a string.
    SeniorEasy◆ Commonly asked
    #string
    PracticeGeeksforGeeks↗Search↗
  • Count vowels, consonants and words in a string.
    SeniorEasy◆ Commonly asked
    #string
    PracticeGeeksforGeeks↗Search↗
02

Round 02 · 4 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Explain the ACID properties of a transaction.
    SeniorMedium◆ Commonly asked
    #dbms
    PracticeGeeksforGeeks↗Search↗
  • Explain exception handling with try, catch and finally.
    SeniorEasy◆ Commonly asked
    #java
    PracticeGeeksforGeeks↗Search↗
  • Write a SQL query to find the second-highest salary.
    SeniorMedium◆ Commonly asked
    #sql
    PracticeGeeksforGeeks↗Search↗
  • Explain primary key, foreign key, unique key and candidate key.
    SeniorEasy◆ Commonly asked
    #dbms
    PracticeGeeksforGeeks↗Search↗
03

Round 03 · 2 questions

Hiring Manager

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

  • How do you estimate the effort for a module assigned to you?
    Senior◆ Commonly asked
  • Which technology stack are you most comfortable with, and why?
    Senior◆ Commonly asked
04

Round 04 · 3 questions

Behavioral / HR

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

  • Tell me about your final-year project.
    Senior◆ Commonly asked
  • Are you willing to relocate anywhere in India?
    Senior◆ Commonly asked
  • What do you know about our company and the services we provide?
    Senior◆ Commonly asked

Practice each round across every company

  • DSA / Coding
  • 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.