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      Data Scientist Interview

      18 Jan 2021
      Anonymous interview candidate
      London, England
      No offer
      Neutral experience
      Average interview

      Application

      I applied online. The process took 7 weeks. I interviewed at Bloomberg (London, England) in Dec 2020

      Interview

      I have a background in economics, statistics (but no Python or SQL) and I'm interested in finance. I applied for the Data Scientist role. First thing after the application is the plum test (you can find infos online), then a pre-recorded video interview (also enough information about that here). At that point, you're invited to assessment day. Shortly before assessment day you're sent a link to an online data-skills assessment, which tests you on statistics (roughly 10 questions, 30 min time). I was surprised to see it includes SQL and Python although the role doesn't require these skills at all, but whatever. On assessment day comes the big surprise: HR says that assessment day will decide whether we align to the Data Scientist position or the Data Analyst one. They say Analysts have more technical data skills, and Scientists have more of a finance focus. Wait, what? I have no degree in finance so I surely can't be the finance person here, and I have no hard coding skills for the Analyst role, which is exactly why I didn't apply for that position. At that point I knew I was out, even if I align with the job description on paper (look it up yourselves). We then had the workflow chart exercise (10 min, not 30!). It's a bit confusing and there isn't really a way to prepare. You're asked to make 3 suggestions on how to improve it. Finally the interview, it was a good-cop bad-cop situation (bad cop was just bored and clearly thought they were wasting time, but can you blame them? I also knew I had no chance at that point). Questions were appropriate (see below). Also, the role requires fluency in a foreign language, but no one ever tested me on that (wink wink). Good luck y'all!

      Interview questions [1]

      Question 1

      Questions related to the job description (teamwork, customer care skills, what makes you a good fit) and a couple on finance (very general). Also, they definitely want you to mention their values and how you align with that, even though it's fluff (how do I know it's fluff? None of the people I interacted with ever mentioned being involved in one of the philanthropy projects. I asked what's the best part about working for BB, no one mentioned diversity, sustainability and the like)
      Answer question
      2

      Other Data Scientist interview reviews for Bloomberg

      Data Scientist Interview

      12 Dec 2025
      Anonymous interview candidate
      Milan
      No offer
      Positive experience
      Average interview

      Application

      I applied online. The process took 3 months. I interviewed at Bloomberg (Milan) in Nov 2025

      Interview

      3 round di colloquio più final round. Primo round behavioural con qualche domanda tecnica molto semplice. Secondo round leetcode essenzialmente. Terzo round bussiness case in python e pandas. Overall colloqui non complessi, sempre gentilissimi

      Interview questions [1]

      Question 1

      Come spiegheresti ad un bambino la differenza tra queue e stack
      Answer question

      Data Scientist Interview

      19 Aug 2025
      Anonymous employee
      London, England
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied through a recruiter. The process took 2 months. I interviewed at Bloomberg (London, England)

      Interview

      4 rounds, including 2 technical rounds - real-time coding task with leet code style task and Jupyter notebook data diagnostic task, 1 HR screening and team leader chat to see the cultural fit

      Interview questions [1]

      Question 1

      What are the difference between data stack versus data queue
      Answer question

      Data Scientist Interview

      15 May 2025
      Anonymous interview candidate
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Bloomberg

      Interview

      Interview covered topics in statistics and machine learning, including linear regression. It was held on a Friday evening quite late as that was the only time available for the interviewer.

      Interview questions [1]

      Question 1

      Describe bagging vs boosting in machine learning
      Answer question