Senior Backend Engineer Interview Questions

2,041 senior backend engineer interview questions shared by candidates

One part of the process involved presenting a project I had worked on, followed by a system design discussion around one of Port's challenges. We explored how to design a dynamic integration data-fetching platform where each integration may expose a different API and data model.
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Senior Backend Engineer

Interviewed at Port.io

3.7
May 31, 2026

One part of the process involved presenting a project I had worked on, followed by a system design discussion around one of Port's challenges. We explored how to design a dynamic integration data-fetching platform where each integration may expose a different API and data model.

In the team fit I was asked about an achievement that I am proud of, I was not asked to give a recent experience, just any achievement from my career but clearly I should have mentioned something from my recent past.
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Senior Backend Software Engineer

Interviewed at Revolut

4
Jul 18, 2024

In the team fit I was asked about an achievement that I am proud of, I was not asked to give a recent experience, just any achievement from my career but clearly I should have mentioned something from my recent past.

You decided to use a key-value cache. However, 99% of users are requesting the same information, which creates a bottleneck on a single key. How would you design your cache to prevent this key from becoming a point of contention and ensure better scalability?
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Senior Backend Engineer - Golang

Interviewed at Voodoo

4.2
Dec 9, 2024

You decided to use a key-value cache. However, 99% of users are requesting the same information, which creates a bottleneck on a single key. How would you design your cache to prevent this key from becoming a point of contention and ensure better scalability?

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