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Senior Backend Engineer Interview Questions

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2,797 senior backend engineer interview questions shared by candidates

- How to efficiently delete records from a relational database table with millions of rows - Practical understanding and application of SOLID principles - How to monitor and observe the health of running microservices - The differences and trade-offs between a monolithic architecture and microservices
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Senior Backend Engineer

Interviewed at Bettermile

4.2★
Jun 20, 2025

- How to efficiently delete records from a relational database table with millions of rows - Practical understanding and application of SOLID principles - How to monitor and observe the health of running microservices - The differences and trade-offs between a monolithic architecture and microservices

1st round - was more hands on coding (nothing too complicated) 2nd round - was more theoretical about implementing a feature E2E (client, server, db). In my opinion this was the hardest interview. I feel that in the others I did quite well and they were not too difficult. 3rd round - was system design like interview. Very theoretical with scalability and consistency in mind. 4rd round - was hr interview, pretty straight forward.
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Senior Backend Software Engineer

Interviewed at monday.com

4★
Aug 8, 2022

1st round - was more hands on coding (nothing too complicated) 2nd round - was more theoretical about implementing a feature E2E (client, server, db). In my opinion this was the hardest interview. I feel that in the others I did quite well and they were not too difficult. 3rd round - was system design like interview. Very theoretical with scalability and consistency in mind. 4rd round - was hr interview, pretty straight forward.

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