Jump Trading Quantitative Researcher Intern interview questions

I was asked about one coding problem, one brain teaser, and two math problems. I thought I answered them fast and correctly. I only received some hints for the brain teaser from the interview. However, I was rejected several days later. I think Jump Trading may have a very high expectation for the candidate.

I interviewed at Jump in London, the process took 2 months. The first stage was a technical zoom interview and then it was an on-site interview. Interviews are very intense, I was asked many problems on a variety of disciplines: maths, programming and statistics. The questions and problems were interesting though. The team is nice and people are very friendly. Although I didn't get an offer, I enjoyed the interview process.