Internia

MathematicsInterview Experiences

Jane Street

Quantitative Trading

New York, NY· Summer 2026

No Offer

University of Waterloo · Mathematics

3rd year · 3.7+ GPA · 2 past internships

Hard Interview

TechnicalMultiple roundsStressful

Big group meeting where they gave an overview of the company 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 psychometric test, like 20 minutes of pattern matching and personality stuff

Questions Asked

  1. 1.“What is Brownian motion and what are its key properties”
  2. 2.“Explain what gamma is in options pricing. What does a large gamma position mean?”

CPP Investments

Risk Analyst

Toronto, ON· Winter 2026

Accepted

University of Waterloo · Mathematics

4th year · 3.3-3.6 GPA · 4+ past internships

Hard Interview

TechnicalBehavioralMultiple roundsSlow process

They hit me with a scenario about correlation risk during a stress event. First round was behavioral and resumme focused. Second was with a senior risk person who covered market risk

Questions Asked

  1. 1.“What do you know about CPP Investments that made you apply?”
  2. 2.“How would you think about inflation risk in a long-duration portfolio?”

RBC

Data Analyst

Winnipeg, MB· Summer 2025

No Offer

University of Manitoba · Mathematics

3rd year · 1 past internship

Easy Interview

TechnicalBehavioralVirtual

Supervisor covered my projects and SQL experience on the phone then managers asked OOP questions and about Java which I know well. And wanted to know about teamwork behavioral stuff, relaxed

Questions Asked

  1. 1.“What is a cohort analysis and when would you apply it?”
  2. 2.“What's the difference between a primary key and a surrogate key”

Optiver

Quantitative Trading

Chicago, IL· Summer 2026

No Offer

University of Waterloo · Mathematics

3rd year · 1 past internship

Hard Interview

TechnicalStressful

80 arithmetic questions in 8 minutes, practiced TraderMath for a week and got like 65 right which pretty sure ended it

Questions Asked

  1. 1.“Tell me about a time you had to explain a mathematical concept to someone without a quant background”

Co-operators

Actuarial Analyst

Guelph, ON· Summer 2025

No Offer

University of Guelph · Mathematics

2nd year · 3.3-3.6 GPA · 0 past internships

Easy Interview

BehavioralMultiple roundsVirtual

They seemed to want someone further along in exams than I was. Virtual interview with an analyst and a manager. Covered exam progress, basic probability and what I knew about P&C pricing

Questions Asked

  1. 1.“What is adverse selection and how do insurers address it?”
  2. 2.“Explain the concept of a loss ratio in insurance”

Jane Street

Quantitative Trader

New York, NY· Winter 2024

No 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. 1.“You flip a coin twice. You win if both are the same. What's the probability you win?”
  2. 2.“Tell me about a market or strategy you've studied or thought deeply about”

Sun Life Financial

Data Analyst

Toronto, ON· Winter 2026

Accepted

University of Waterloo · Mathematics

Alumni · 3.3-3.6 GPA · 2 past internships

Easy Interview

ConversationalVirtual

Easiest interview I've done at a bank, pre-recorded video and then a teams call where the manager just chatted with me about my resume for 30 min

Questions Asked

  1. 1.“Explain the difference between p-value and confidence intervals in plain language”
  2. 2.“Write a SQL query to find all users active in both January and February”

Tokio Marine

Actuarial Analyst

Toronto, ON· Summer 2025

No Offer

University of Calgary · Mathematics

1st year · 2.1-2.4 GPA · 0 past internships

Easy Interview

BehavioralVirtual

Review resume and basic insurance knowledge, nothing hard. Process was quick

Questions Asked

  1. 1.“What's the difference between life and P&C actuarial work?”
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