QuantumBlack Data Engineer interview experience

No offer

Medium

Positive

London, EnglandPosted Nov 2022 · Candidate report, summarized by Dataford

I went through a process that felt closer to consulting than purely engineering.

After an initial HR conversation, I was pushed into an online test that covered Python and SQL, and then the next stages shifted toward casework and competency-style evaluation. What stood out immediately was the way the interview questions probed for business thinking—how opportunities could expand, and how I contributed to my team’s work—rather than only focusing on whether I could write correct queries.

In the later rounds, the technical work landed in a notebook-style environment where I had to do data wrangling using pandas, Spark, or SparkSQL. The questions included things like window

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