Walleye Capital Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 23 interview experiences · FREE TO READ
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5 roles · 23 reportsCandidate interview experiences
First-hand accounts from people who interviewed at Walleye Capital.
Full Stack Quantitative Developer
The first step was a Hackerrank assessment. It included a React question where you had to add code to a component to make it pass some test cases. There was also an API question that involved fetching data and filtering it. A SQL question and a Leetcode question were also part of this assessment. You had 2 hours to complete it, and you were allowed to use online resources.
- Write a SQL query to calculate the total portfolio value using the Portfolio and Share Price tables.
- Modify a React component to handle adding/removing transactions and updating a transaction visualization.
Portfolio Analyst
I was contacted by a recruiter. Then I had a Hackerrank assessment with 2 easy SQL, 2 hard SQL, and 2 medium Python questions. The Hackerrank was difficult, taking 2 hours and covering 6 questions. The easy SQL were very basic, but the hard SQL involved advanced concepts like joining multiple conditions and using coalesces for filtering, needing precise queries. The Python questions assessed general Python knowledge. I found it heavily technical, and although the recruiter mentioned a technical role, the company indicated a need for operations tasks like stock locate requests.
- Implement a Python function that accepts nested dictionary values, testing pythonic knowledge with for loops and isinstance.
- Utilize a lambda expression to perform calculations concisely in a single line.
- Write a SQL query across approximately five tables to calculate metrics such as area and total cost.
Trader
First spoke with someone in business development, then the head trader, and finally heads of other departments. They asked about my past experience, my reasons for seeking a new opportunity, and my expectations. It was pretty straightforward, with no technical questions. I'm not entirely sure what they were seeking, but since everyone I talked to appeared to be younger, they might be looking for someone ambitious and eager.
- Can you describe your experience at abc company?
- What makes you consider leaving your current role and joining a new firm?
Quantitative Researcher
It was a two-stage interview. The first round had behavioral and data analysis questions, basically to check how you approach ambiguous problems, structure your thoughts, and share your findings. The questions were case-style, not too weird. The second round was a live coding test with standard data manipulation and logic problems. The environment was good, and the interviewers were helpful, not trying to trick you. It felt more like working together than a test. All in all, a really professional process. The interviewers were smart but also nice. No tricky questions or unnecessary pressure. It was one of the easiest interview processes I've gone through. I'd definitely recommend applying.
- Can you describe a project you worked on, including any difficulties you faced and how you overcame them?
- What is your approach to handling ambiguity in problems and communicating your findings?
- Could you walk me through a case study related to data analysis?
Walleye Capital Interview Questions
Quoted word for word from Walleye Capital interview reports.
“Implement a Python function that accepts nested dictionary values, testing pythonic knowledge with for loops and isinstance.”
Read reports →“How would you write a Python function to overlay functions?”
Read reports →“Write a SQL query to calculate the total portfolio value using the Portfolio and Share Price tables.”
Read reports →“Aside from speed, what's a difference between C and Python?”
Read reports →“Is SQL or NoSQL quicker, and why?”
Read report →“Write a SQL query across approximately five tables to calculate metrics such as area and total cost.”
Read report →“What is the reason for pursuing a PhD in physics?”
Read report →“Tell me a brain teaser about wolves eating sheep on an island.”
Read report →“Given a skewed data distribution with just 10 true positives and 190 true negatives, how would you go about measuring your predictive model's performance?”
Read report →Formats, difficulty and experience
Across all 23 Walleye Capital interview reports.