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In this technical challenge, you will build a SpringBoot web application that integrates with a PostgreSQL database and uses Docker to run in a container. The application should have a REST API that allows users to perform CRUD (create, read, update, delete) operations on a data model representing a simple e-commerce platform. The REST API should be defined using OpenAPI.
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Sr. Java Developer

Interviewed at TeamViewer

3.4★
Jan 29, 2024

In this technical challenge, you will build a SpringBoot web application that integrates with a PostgreSQL database and uses Docker to run in a container. The application should have a REST API that allows users to perform CRUD (create, read, update, delete) operations on a data model representing a simple e-commerce platform. The REST API should be defined using OpenAPI.

Java Questions like: - Difference between a StringBuilder and a StringBuffer - Difference between a ArrayList and LinkedList - hashCode() and equals() Spring Framework and SpringBoot - What is the core foundation of Spring Framework - What is the difference between SpringBoot and Spring Framework - Beans lifecycle - @Autowired annotation - @EnableAutoConfiguration Others - Scalability - CI/CD, what is the CI and what is the CD Databases - Difference between Relational and Non Relational Databases Code Challenge: - Find the longest substring of unique characters in a String
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Senior Java Backend Developer

Interviewed at EPAM Systems

4★
Feb 16, 2026

Java Questions like: - Difference between a StringBuilder and a StringBuffer - Difference between a ArrayList and LinkedList - hashCode() and equals() Spring Framework and SpringBoot - What is the core foundation of Spring Framework - What is the difference between SpringBoot and Spring Framework - Beans lifecycle - @Autowired annotation - @EnableAutoConfiguration Others - Scalability - CI/CD, what is the CI and what is the CD Databases - Difference between Relational and Non Relational Databases Code Challenge: - Find the longest substring of unique characters in a String

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