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      Thirty Madison

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      Senior Data Engineer Interview

      18 Mar 2025
      Anonymous interview candidate
      No offer
      Positive experience
      Average interview

      Application

      I interviewed at Thirty Madison in Feb 2025

      Interview

      The interview process consists of several rounds: Recruiter phone call Take-home coding round – 1 hour for SQL and 1 hour for Python (easy questions) Hiring manager round Virtual onsite – 6 sessions, including a Python coding round The virtual onsite could potentially be condensed to just 3 sessions. By combining the rounds into a single session with three interviewers, it would eliminate the repetition of similar questions from different interviewers. The team was great to engage with, and the recruiter did an excellent job with follow-ups. However, I believe the process could be more efficient if streamlined. As it stands, it feels somewhat redundant, and reducing the number of sessions would improve the overall experience. The total interview time is approximately 7 hours.

      Interview questions [1]

      Question 1

      How I would approach optimizing a large-scale data pipeline.
      Answer question
      1