New Grad / Junior Backend at Fiserv

BackendNew Grad / JuniorOffer◆ Commonly asked· 2025

A junior backend hiring drive. Aptitude screen first, then technical fundamentals and HR.

The loop · 4 rounds

Round 01 · 3 questions

Online Assessment

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

Quantitative aptitude: simple and compound interest.
New Grad / JuniorEasy◆ Commonly asked
#aptitude
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Quantitative aptitude: profit, loss and percentages.
New Grad / JuniorEasy◆ Commonly asked
#aptitude
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Pseudocode: predict the output of the given code block.
New Grad / JuniorMedium◆ Commonly asked
#pseudocode
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Round 02 · 2 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

Swap two numbers without using a temporary variable.
New Grad / JuniorEasy◆ Commonly asked
#math
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Print a star / pyramid pattern for n rows.
New Grad / JuniorEasy◆ Commonly asked
#patterns
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Round 03 · 4 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

Explain the ACID properties of a transaction.
New Grad / JuniorMedium◆ Commonly asked
#dbms
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Difference between abstraction and encapsulation.
New Grad / JuniorEasy◆ Commonly asked
#oops
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Difference between C and C++.
New Grad / JuniorEasy◆ Commonly asked
#c
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Explain the layers of the OSI model.
New Grad / JuniorEasy◆ Commonly asked
#networking
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Round 04 · 3 questions

Behavioral / HR

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

Are you comfortable working in rotational or night shifts?
New Grad / Junior◆ Commonly asked
Tell me about a conflict in a team project and how you resolved it.
New Grad / Junior◆ Commonly asked
Where do you see yourself in five years?
New Grad / Junior◆ Commonly asked

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