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Senior Backend Engineer Interview Questions

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2,039 senior backend engineer interview questions shared by candidates

Interview 1: (HR Interview) Basic technical questions like 1. What is database lock 2. Git merge vs git fetch etc etc Interview 2: (Technical Interview) It was more like discussion what problems you solved during your career. Interview 3: (Culture Chat) You need to prepare some questions about organization and work and basically you will be checked that you will be fit in organization culture. Part 4: Then you will be given small project which you need to finish in 7 days and they will be given gift amount. Part 5: After that you need to represent your project. Part 6: After that you will be given feedback of your project work.
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Senior Backend Engineer

Interviewed at Teya

3.3★
Aug 29, 2021

Interview 1: (HR Interview) Basic technical questions like 1. What is database lock 2. Git merge vs git fetch etc etc Interview 2: (Technical Interview) It was more like discussion what problems you solved during your career. Interview 3: (Culture Chat) You need to prepare some questions about organization and work and basically you will be checked that you will be fit in organization culture. Part 4: Then you will be given small project which you need to finish in 7 days and they will be given gift amount. Part 5: After that you need to represent your project. Part 6: After that you will be given feedback of your project work.

• 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?

How would you optimise a full stack application fetching lots of data? How would you handle a ticket queue with millions of users? Would you use WebSockets, long polling or SSE to handle this? Explain the tradeoffs.
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Senior Backend Engineer

Interviewed at Tomorrowland (Belgium)

3.8★
Jun 24, 2025

How would you optimise a full stack application fetching lots of data? How would you handle a ticket queue with millions of users? Would you use WebSockets, long polling or SSE to handle this? Explain the tradeoffs.

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