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Back End Engineer Interview Questions

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Back End Engineer Interview Questions

If you're applying for a job position as a back-end engineer, interviewers want to know if you have the knowledge to design, build, and maintain the server-side of a website. Be prepared to answer questions about the latest in web design and technology, as well as questions about your problem-solving skills, time management abilities, and communication skills.

Top Back End Engineer Interview Questions & How to Answer

Question 1

Question #1: Can you talk about the most modern advancements in website building and servers?

How to answer
How to answer: Employers don't just want someone who is up to date with the latest technology, they want someone who is innovative and on the cutting edge. When discussing the most modern advancements in web design and web building, talk about how you would incorporate these modern enhancements into the company's website.
Question 2

Question #2: How do you feel about working as a member of a team?

How to answer
How to answer: Back-end engineers often have to work as a member of a team to develop and run a website. Interviewers want to know if you're a team player who can work well with the staff that already exists at the company. Highlight your abilities to communicate effectively and collaborate with others.
Question 3

Question #3: Can you tell me about a time you had to meet a tight deadline?

How to answer
How to answer: When asked this question, highlight your time management skills and ability to stay organized and on task, even in high-stress situations. Employers want to know that you can work well under pressure.

1,560 back end engineer interview questions shared by candidates

What are the main principles of OOP? What is the difference between an interface and an abstract class? How does HashMap work internally? What is hash collision? What is the difference between equals() and hashCode()? Why is String immutable in Java? What are checked and unchecked exceptions? What is the difference between ArrayList and LinkedList? What is the difference between HashMap and ConcurrentHashMap? Explain the lifecycle of a thread. What is the difference between Runnable and Callable? What is synchronization? What is the volatile keyword? What are lambda expressions? What is the Stream API in Java 8? 🚀 Spring Boot What is Spring Boot? What is the difference between @Component, @Service, and @Repository? How does dependency injection work in Spring? What is @Autowired? What is the Spring Bean lifecycle? How do you handle exceptions globally in Spring Boot? What is REST and how does it work? How do you secure a Spring Boot application? Explain the flow of a REST API request in Spring Boot. What is Spring Security? 🔐 JWT / Security What is JWT? How does JWT authentication work? What is the difference between authentication and authorization? How do you implement role-based access control? 🧱 Microservices What is the difference between monolithic and microservices architecture? What are the advantages of microservices? How do microservices communicate with each other? What is an API Gateway? What is service discovery? What is a circuit breaker? How do you handle failures in microservices?
avatar

Java Back-end Developer

Interviewed at Wipro

3.6★
Mar 25, 2026

What are the main principles of OOP? What is the difference between an interface and an abstract class? How does HashMap work internally? What is hash collision? What is the difference between equals() and hashCode()? Why is String immutable in Java? What are checked and unchecked exceptions? What is the difference between ArrayList and LinkedList? What is the difference between HashMap and ConcurrentHashMap? Explain the lifecycle of a thread. What is the difference between Runnable and Callable? What is synchronization? What is the volatile keyword? What are lambda expressions? What is the Stream API in Java 8? 🚀 Spring Boot What is Spring Boot? What is the difference between @Component, @Service, and @Repository? How does dependency injection work in Spring? What is @Autowired? What is the Spring Bean lifecycle? How do you handle exceptions globally in Spring Boot? What is REST and how does it work? How do you secure a Spring Boot application? Explain the flow of a REST API request in Spring Boot. What is Spring Security? 🔐 JWT / Security What is JWT? How does JWT authentication work? What is the difference between authentication and authorization? How do you implement role-based access control? 🧱 Microservices What is the difference between monolithic and microservices architecture? What are the advantages of microservices? How do microservices communicate with each other? What is an API Gateway? What is service discovery? What is a circuit breaker? How do you handle failures in microservices?

# Back-End Developer Test ## Overview Your client has tasked you with making a RESTful API to support the ultimate Moviegoers Guide suite of applications. They are asking for an API that serves up: * A list of movies * The user should be able to search the movies by title * The user should be able to filter the movies by rating * The user should be able to filter the movies by category * Movie details for each movie * A list of actors in a movie We have provided a mysql database of movie info for you. We have also provided a starter PHP application using the SLIM framework although you are free to use the language and framework of your choice - Ruby, Node, etc.
avatar

Back-end Software Engineer

Interviewed at Church Community Builder

4.1★
Dec 18, 2018

# Back-End Developer Test ## Overview Your client has tasked you with making a RESTful API to support the ultimate Moviegoers Guide suite of applications. They are asking for an API that serves up: * A list of movies * The user should be able to search the movies by title * The user should be able to filter the movies by rating * The user should be able to filter the movies by category * Movie details for each movie * A list of actors in a movie We have provided a mysql database of movie info for you. We have also provided a starter PHP application using the SLIM framework although you are free to use the language and framework of your choice - Ruby, Node, etc.

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