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      Principal Data Engineer Interview

      12 Jun 2025
      Anonymous interview candidate
      No offer
      Negative experience

      Other Principal Data Engineer interview reviews for Confiz

      Principal Data Engineer Interview

      21 Jul 2025
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied through a recruiter. The process took 3 weeks. I interviewed at Confiz in Jun 2025

      Easy interview

      Application

      I applied online. I interviewed at Confiz in Mar 2025

      Interview

      I went through multiple interview rounds with Confiz, starting with the manager, then the technical team, the team lead, and finally the data director. All went well, and I was told I had cleared each stage. However, after weeks of silence and no response to follow-ups via email, calls, or LinkedIn, it's clear the company lacks basic professional courtesy. As a seasoned professional with over 10 years of experience, I find this treatment highly disrespectful and disappointing. Time is valuable, and this kind of behavior is unacceptable for any organization claiming to value talent

      Interview questions [2]

      Question 1

      what are the windows function and implmeneted using pyspark to find the imediate last 3 value with partition and add them all and subtarct with current row to get the result.
      1 Answer

      Question 2

      what will you do if your team mate doesnt perform well and you are incharge to deliever tshe project?
      1 Answer
      2

      Interview

      I went through three rounds of interviews at Confiz: a technical round covering Spark, streaming, ETL, and data lakes; a behavioral round; and a final technical round with the client involving PySpark, Python coding, and deep questions on data formats and warehousing. The process felt solid, and I believe I performed well. However, after completing all rounds, I was completely ghosted—no rejection, no feedback, nothing—even after waiting three weeks. For a senior-level role, this lack of communication is unprofessional. Candidates deserve at least a follow-up.

      Interview questions [1]

      Question 1

      A thorough technical interview covering a broad range of data engineering topics including Spark, Spark Streaming, ETL pipelines, Data warehousing and Data Lakes.
      Answer question

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