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Backend Software Engineer Interview Questions

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2,346 backend software engineer interview questions shared by candidates

• Difference between array and ArrayList? • Difference between Set and List? • Set and List are classes or interfaces? • What is ArrayList’s parent class? • Is possible to use primitive types in arrays? • Is possible to use primitive types in List? • What is Generics? • Why is not possible to use primitive types in List? • What is Generics? • Why is not possible to use primitive types in Generics ? • Difference between StringBuilder and StringBuffer ? • How does Garbage Collector work? • What is the command to call GC execution? • Difference between memory heap and stack? • How do microsservices work? • How do we define security for application access?
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Senior Backend Software Engineer

Interviewed at InAllMedia

3.9★
Aug 26, 2022

• Difference between array and ArrayList? • Difference between Set and List? • Set and List are classes or interfaces? • What is ArrayList’s parent class? • Is possible to use primitive types in arrays? • Is possible to use primitive types in List? • What is Generics? • Why is not possible to use primitive types in List? • What is Generics? • Why is not possible to use primitive types in Generics ? • Difference between StringBuilder and StringBuffer ? • How does Garbage Collector work? • What is the command to call GC execution? • Difference between memory heap and stack? • How do microsservices work? • How do we define security for application access?

1. Reasons why Redis is not considered as a primary datastore. 2. Prefer a promised call over others in the most efficient fashion. 3. Design application structure for access control mgmt. Also design db mgmt system for the same.
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Software Engineer, Backend

Interviewed at Sequoia

2.9★
Nov 8, 2019

1. Reasons why Redis is not considered as a primary datastore. 2. Prefer a promised call over others in the most efficient fashion. 3. Design application structure for access control mgmt. Also design db mgmt system for the same.

1. Gave the requirements and asked me to implement the simple project with test cases and provide the GIT url. 2. Technical questions on a coding project implemented in the first round and Microservice/Springboot-related questions. 3. Next 3 rounds with DevOps team, Testing team. 4. CFO round - Behavioral questions.
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Software Engineer, Backend

Interviewed at Decision Lens

4.5★
Sep 21, 2022

1. Gave the requirements and asked me to implement the simple project with test cases and provide the GIT url. 2. Technical questions on a coding project implemented in the first round and Microservice/Springboot-related questions. 3. Next 3 rounds with DevOps team, Testing team. 4. CFO round - Behavioral questions.

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