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Senior Backend Engineer Interview Questions

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2,042 senior backend engineer interview questions shared by candidates

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

4.3★
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?

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

3.8★
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.

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