Very disorganised. Took a long time to reply to emails. All interview questions were simple brainteasers from the green book. Didn't receive offer after final round and no explanation why.
Interview questions [1]
Question 1
well known problems from green book. some python too
I applied through a recruiter. I interviewed at Qube Research & Technologies (Paris) in Apr 2026
Interview
Une partie fit assez classique. La personne se chargeant de l’interview s’est présentée et m’a aussi demandé de me présenter pour mieux me connaitre.
Une deuxième partie technique où on m’a d’abord demandé de présenter un de mes projets. Ensuite une partie Maths avec des questions sur la régression linéaire, Lasso, Ridge. Ensuite un exercice classique sur les marches aléatoires.
Interview questions [1]
Question 1
Pouvez-vous me donner l’estimateur OLS ? Peut-on le raffiner ?
Y’a-t-il une forme fermée pour Lasso et Ridge et si oui, qu’est-ce qui change dans cette forme ? Sinon expliquer pourquoi.
I interviewed at Qube Research & Technologies (London, England)
Interview
1st round: technical interview with the senior quant researcher, including probability, python, pandas and linear regression. 2nd round: interview with team managers, including background screen ,data analysis, math questions in linear algebra and calculus.
Interview questions [1]
Question 1
The assumptions of OLS. The difference between ridge regression and lasso regression.
I interviewed at Qube Research & Technologies (Paris)
Interview
It begins with a technical interview assessing quantitative and problem-solving skills, followed by an on-site day where candidates meet multiple teams and go through several in-person interviews to evaluate technical depth, communication, and overall fit.
