Group One Trading Interview Questions
& Process

It was pretty behavioral and not very technical, with lots of conversations with different people. It was quite different from other trading firms I've interviewed with; I was expecting more math/probability questions.

The interviewer was kind and asked easy questions. It lasted about 20 minutes. They asked about why Group One Trading, what my advantage is, details in my background, and my most proud experience. There was no technical or coding involved.

The company is expanding its quantitative teams. Apparently, they're struggling with their current stochastic volatility models because they seem to lack expertise in mathematical and algorithmic optimization, and basic statistical learning, which is why their models aren't performing well. The interviewers felt more like they were completing tasks rather than genuinely seeking talent. However, the interview process itself was professional; the first round and the superday were scheduled to accommodate my availability.

I sent in my resume online and then got an email from HR about two weeks later to schedule a phone chat. They didn't say what it was for, but I assumed it was an interview. About a week after that, the HR person called me and then brought their manager of operations onto the phone to interview me. I expected it to be math-heavy based on other posts, but she asked behavioral questions for about 15-20 minutes, along with some questions about options/trading definitions and general stuff. Then she asked about my math skills and gave me 5-6 math problems. You had to figure them out fast and explain your thinking out loud while doing the mental math. The problems started easy and got harder. The interview seemed to go okay, even though she called me out a couple times for sounding discouraged, and her question about a confrontation, asking if I punched the person, was a bit odd. A few days later, I got an email saying they were impressed but moving on with other candidates.