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Senior Backend Engineer Interview Experience - Berlin, Germany

December 2, 2025
Neutral ExperienceNo Offer

Process

I applied online. The process took 1 week.

Applied via LinkedIn and the recruiter reached out to me pretty fast. She was very helpful during the explaining process of the rounds. The first round was live coding; they suggest you prepare with the medium problems in LeetCode, so I did exactly that.

But in the interview, the question was very simple. I got a little nervous and struggled a bit during the initial implementation, but I finished it, optimized it as much as it could have been, and passed the test cases.

However, during the theory questions, I was clueless—how many people know how TLS actually works underneath the layers? Anyway, I got the feedback that I lack networking security depth and I copy-pasted something suspicious during live coding. I have no idea what that means; they should ask to share the screen instead of making assumptions.

Questions

Theory questions about DNS, TLS, HTTPS, Reverse Proxy, everything related security.

A DS algo live coding array question of finding last n digit's average from a stream.

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Interview Statistics

The following metrics were computed from 1 interview experience for the Bolt Senior Backend Engineer role in Berlin, Berlin.

Success Rate

0%
Pass Rate

Bolt's interview process for their Senior Backend Engineer roles in Berlin, Berlin is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive0%
Neutral100%
Negative0%

Candidates reported having mixed feelings for Bolt's Senior Backend Engineer interview process in Berlin, Berlin.

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