I applied through a staffing agency. I interviewed at G-Research in Mar 2021
Interview
A headhunter contacted me and told me about the offer. I took a test in maths, with a bit of physics and software engineering. I expected it to be more in data science and machine learning.
Interview questions [1]
Question 1
A fair coin is tossed 100 times to create a sequence of heads and tails.
A participant is allowed to ask 1 yes or no question (e.g. was the first coin flip heads?), then plays a game where he tries to guess all 100 coins. The participant is awarded $1 for every coin guessed correctly, and loses $1 for each incorrect guess. Find and prove an optimal strategy.
I applied online. I interviewed at G-Research (London, England) in Mar 2026
Interview
The interview process consists of multiple stages with hard quantitative bars to be met. After CV screening, they send you their proprietary online assessment of 10 MC. Some questions seem unusual, some are intentionally tricky, but most are similar to standard quant brainteasers and you can pass if you have really grinded through standard material. Then, there is an online interview with a quant which will ask you technical questions in barrage. The bar probably depends on your answers' grades and how many questions you can answer. I did not expect some questions, so I was caught unprepared and I fumbled spectacularly.
lots of prob stats, i prepared using the greenbook, but I guess i didnt do as well as i thought i did
I also did some review of combinatorics and statistics, but still unsure about my performance
Fairly straightforward. The questions were pretty standard for the most part, similar to what you would see in other quant researcher interviews, maybe a bit more on the stats end