Developer Java Backend Interview Questions

Java Backend Engineer

Interviewed at Skyscanner

4★

Jul 27, 2016

Common manager (lowest common ancestor) and most common destination (histogram)

Java Backend Engineer

Interviewed at Volkswagen Group

4.1★

Nov 21, 2024

A difference between PWA and native application.

Software Engineer II SDE2 Java Backend

Interviewed at Walmart Global Tech

3.6★

Jan 12, 2023

Medium to Hard level DSA questions Knowledge about process, threads,DBMS are important.

Senior Backend Engineer-Java

Interviewed at Goodnotes

4.3★

Jun 13, 2025

Given a list of timestamped server requests with IPs and IDs, implement rate limiting: reject requests if an IP exceeds N requests within 1000ms. Return IDs of rejected requests.

Java Backend Developer

Interviewed at Zalando

3.6★

Dec 18, 2014

there was one exercise to implement a function which takes a number as a parameter "A" and must draw a X of stars and spaces and height "A" for example for A=5 * * * * * * * * *

Java Backend Engineer

Interviewed at Swiggy

3.6★

Jun 19, 2024

no. of islands in the graph

Java Backend Engineer

Interviewed at QBurst

4.1★

Jan 21, 2025

Java 8, Spring boot annotations, Basic microservices, SOLID principles.

Find the time complexity of the comparison method

They asked me one question on DSA, which was to delete the nth node from end and return the head of the linked list. After that i got questions on Core Java & SpringBoot: 1) List few spring boot annotations 2) Explain copy constructor and it's types.

Java Backend Engineer

Interviewed at BuzzClan

4.1★

Jul 30, 2024

Multithreading, apache camel, spring bean life cycle Soap vs rest, Equal method and opertaor diff