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      Onyx Capital Group

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      Machine Learning Engineer Interview

      15 June 2026
      Anonymous interview candidate
      London, England
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Onyx Capital Group (London, England)

      Interview

      First stage was a very long assessment center, which was odd. Got a take-home task the previous day, which I personally found quite tough and spent the whole day working on. Most candidates just sent the whole thing through Claude and finished it super quickly. The AC itself consisted of an AI-less coding task with Pandas and Python, fairly straightforward but some people struggled with it and one guy even left. Then, we presented our take-home tasks to everyone. Afterwards, we got lunch, had a group activity, and 1-1 interviews. Overall, team was pretty nice and chill. Just a bit of a slog and I guess they're very busy as they would frequently come in/out during the interviews. Fair enough, though.

      Interview questions [1]

      Question 1

      They'll dive into your approach for the take-home, so make sure that if you did use AI, you know what exactly is happening and why. Also be ready for the standard interview questions like 'why this role', etc...
      Answer question