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      Director Data Science Interview

      Apr 15, 2025
      Anonymous employee
      Nairobi
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied through an employee referral. The process took 4 weeks. I interviewed at Visa Inc. (Nairobi) in May 2021

      Interview

      Started with the recruiter round who did a background check and fit before proceeding with the technical rounds. Had two rounds with the Data Science and Data Engineering teams. Asked technical questions on machine learning, data engineering. They sought good understanding around Spark, ML algorithms and Deployment. After the technical rounds I had the final interview with the VP Level hiring manager.

      Interview questions [1]

      Question 1

      What's your understanding of spark dataframes? Explain the end to end ML project you have implemented in the past highlighting the data preparation, choice of algorithms, evaluation of algorithms and outcomes of the project.
      Answer question