QuantumBlack Data Engineer interview experience

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Chicago, ILPosted May 2026 · Candidate report, summarized by Dataford

After I applied, the process moved through multiple layers of testing that felt deliberately technical.

I had a HackerRank assessment early on, then several follow-on rounds that included live/problem-solving interviews and additional case-style work. The coding and data engineering expectations were a bit broader than I first assumed, with interviewers focused heavily on critical thinking, logical reasoning, and the ability to communicate clearly while working through problems.

Across the technical rounds, the mix kept pulling me between Python and the data engineering stack rather than staying narrowly on SQL. There were Python questions that looked like DS&A practice, plus data engineering

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