Big group meeting where they gave an overview of Jane Street and the internship program and then split us into smaller groups for individual interviews. HR plus the manager had behavioral questions. They also made us do this Thomas International psychometric test, like 20 minutes of pattern matching and personality stuff
Questions Asked
1.“What is Brownian motion and what are its key properties”
2.“Explain what gamma is in options pricing. What does a large gamma position mean?”
Quantitative Trading Analyst
New York, NY
Winter 2026No Offer
University of Waterloo · Computing and Financial Management
3rd year · 3.7+ GPA · 2 past internships
Hard Interview
TechnicalStressfulVirtual
Phhone interview focused entirely on probability and expected value. Fair coin toss variants, a betting game where you set the price and they decide whether to buy or sell, conditional probability with dependent events. I did fine on the simpler ones but the third question about optimal bidding strategy in a sequential auction I had no clue on.
Questions Asked
1.“What's the probability of getting at least one 6 when rolling two fair dice?”
2.“Describe a time you found a non-obvious pattern in data that others had missed”
Software Engineer
Summer 2026No Offer
UCLA · Computer Science
3rd year · 2 past internships
TechnicalLive coding
Design Proxy Cache class given a LRU or LFU cache (abstracted high level)
implement three functions in proxy cache class. You are given high level design of how requests are handled from client to server to database
Quantitative Trader
New York, NY
Winter 2024No Offer
MIT · Mathematics
Alumni · 3.7+ GPA · 4+ past internships
Hard Interview
TechnicalMultiple roundsStressful
Froze on a market making problem and got ghosted after. Three phone rounds, probability and Bayesian stuff
Questions Asked
1.“You flip a coin twice. You win if both are the same. What's the probability you win?”
2.“Tell me about a market or strategy you've studied or thought deeply about”