Quantitative Researcher Intern

The process started with a coding assessment consisting of four medium-level questions: two roughly equivalent to a 1200 Codeforces rating and the other two around 1400. The aim was to solve them as quickly as possible. Candidates were then shortlisted for interviews based on their assessment performance and resumes.

There were two interviews. The first was in person with two full-time quantitative researchers. They began by discussing one of my projects, an option pricing engine, and then moved on to probability puzzles. These were mostly one-step extensions of problems from 50 Challenging Problems in Probability, along with several questions involving expected value and variance that could be solved using one or two basic standard mathematical tricks.

The second interview was online with a full-time quantitative researcher. It started with a few basic, intuition-based questions about options that required no prior background, followed by a series of seven or eight probability puzzles. I solved all but the last without hints. For the final puzzle, I asked for a hint and then completed the solution. After the interviews, I was offered an internship.