Glassdoor users rated their interview experience at G-Research as 33.3% positive with a difficulty rating score of 4.33 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Quant Intern and Quantitative Researcher rated their interviews as the hardest, whereas interviews for Quantitative Researcher and Quantitative Research Intern roles were rated as the easiest.
The hiring process at G-Research takes an average of 30 days when considering 3 user submitted interviews across all job titles. Candidates applying for Quantitative Researcher had the quickest hiring process (on average 30 days), whereas Quantitative Researcher roles had the slowest hiring process (on average 30 days).
The process consists on an initial quiz, a triage interview, 3 mentor interviews, and a final interview with the research manager. I found it to be a bit too much for an intern position, but I get they are very selective.
I applied through a recruiter. I interviewed at G-Research in Dec 2025
Interview
I was sent a multiple choice test consisting of 10 questions, each with 5 possible answers, and 90 minutes to solve them all. The safety checks were limited to tracking whether you'd switch tab on the browser. Some questions were easy, others required actual math knowledge (had to find the minimizer function of some cost and how the cost scales with the initial condition). The coding questions were mostly easy, but one of them required python-specific knowledge.
Interview questions [2]
Question 1
Eigenvalues of the daily covariance matrix of n stocks with equal volatility and equal pairwise correlation.
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