Senior Java Engineer Interview Questions

609 senior java engineer interview questions shared by candidates

Hiring Manager Interview: The interview focused largely on soft skills and engineering practices, including topics such as the difference between an engineer and a developer, giving and receiving feedback, testing strategies (e.g., the test pyramid), and approaches to code reviews. Coding Challenge: The experience during the coding challenge varied significantly depending on the interviewer (mine was absolutely terrible). The discussion covered topics such as the Dockerfile, dependency/version choices in the pom.xml, log and debug console output, and design decisions. In some cases, I was also questioned about features that were not part of the original challenge requirements.
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Senior Backend Engineer-Java

Interviewed at Redcare Pharmacy

3.7
Feb 10, 2026

Hiring Manager Interview: The interview focused largely on soft skills and engineering practices, including topics such as the difference between an engineer and a developer, giving and receiving feedback, testing strategies (e.g., the test pyramid), and approaches to code reviews. Coding Challenge: The experience during the coding challenge varied significantly depending on the interviewer (mine was absolutely terrible). The discussion covered topics such as the Dockerfile, dependency/version choices in the pom.xml, log and debug console output, and design decisions. In some cases, I was also questioned about features that were not part of the original challenge requirements.

Spring mvc Hashtable vs concurrent hashmap Map vs flat map Api gateway Microservices vs monolithic Streams Catch why Arraylist vs linked list Classnotfound exceptions 500internl error Patch method Lambda expression Equals vs == Foreign key annotation
Sep 29, 2023

Spring mvc Hashtable vs concurrent hashmap Map vs flat map Api gateway Microservices vs monolithic Streams Catch why Arraylist vs linked list Classnotfound exceptions 500internl error Patch method Lambda expression Equals vs == Foreign key annotation

Technical test (face-to-face) - build a Spring Boot RESTful web service that stores search strings and verifies if a search string exists in the application. Add dynamic reloading. Turn search string storage into ElasticSearch cluster & client.
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Senior Java API Engineer

Interviewed at PPL

3.2
Sep 19, 2017

Technical test (face-to-face) - build a Spring Boot RESTful web service that stores search strings and verifies if a search string exists in the application. Add dynamic reloading. Turn search string storage into ElasticSearch cluster & client.

Task was about e-wallet application (was old task 15 November 2019) Requirements The task consists of a wallet server and a wallet client. The wallet server will keep track of a users monetary balance in the system. There should be separate balance for different currencies. The client will emulate users depositing and withdrawing funds. Database Must include the database schema that is needed for the server application. The following technologies must be used • Java 8+ • Spring 5.x • gRPC • MySQL 5.x • Gradle • JUnit Extra points for using these technologies: • Docker • Hibernate • Spring Boot 2.x
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Senior Java Engineer

Interviewed at betPawa

3.8
Feb 17, 2020

Task was about e-wallet application (was old task 15 November 2019) Requirements The task consists of a wallet server and a wallet client. The wallet server will keep track of a users monetary balance in the system. There should be separate balance for different currencies. The client will emulate users depositing and withdrawing funds. Database Must include the database schema that is needed for the server application. The following technologies must be used • Java 8+ • Spring 5.x • gRPC • MySQL 5.x • Gradle • JUnit Extra points for using these technologies: • Docker • Hibernate • Spring Boot 2.x

The technical question was on the following topics: SQL: fundamental question with some questions about performance(a little bit hard). Spring/Java: average questions about spring framework and dependency injection.
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Senior Software Engineer - Java Developer

Interviewed at ARPU Telecommunication Services

4.1
Jul 15, 2022

The technical question was on the following topics: SQL: fundamental question with some questions about performance(a little bit hard). Spring/Java: average questions about spring framework and dependency injection.

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