Radix Trading Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 12 interview experiences · FREE TO READ
Which role are you interviewing for?
4 roles · 12 reportsCandidate interview experiences
First-hand accounts from people who interviewed at Radix Trading.
Software Engineer
I was approached by a recruiter at Radix and went through 3 interview rounds. The first was a coding challenge that was tougher than typical LeetCode problems, requiring detailed problem decomposition, case analysis, and interface definition. The last interview involved a technical discussion with a Senior Engineering Lead who focused heavily on git internals for about 30 minutes. I mentioned I understood git well generally but hadn't deeply studied its implementation. Despite this, I attempted to reason through its workings. While the lead was not rude and I learned something, I was later rejected because they specifically sought someone with deep git internals knowledge, something not previously communicated. This felt like a waste of time as they should target candidates with that specific expertise.
- Describe the process of creating a git commit, including the objects generated and how changes are saved.
Quantitative Researcher
I had an initial one-on-one interview near my school. It included two technical questions and a chat about my interest in the company. Later, I had an on-site interview day a few months after. Several candidates and Radix employees, including the founders, were present. We candidates rotated through interviews with the employees, each lasting an hour. In total, I saw 5 interviewers. There was also a one-hour break for a free lunch. Each interview was quite relaxed, with maybe one or two technical questions from the interviewer, and discussions about their work at Radix and the company culture.
- What's the largest set of boxes from a given collection that can be nested sequentially?
- Given a linked list representing stock bids and asks, how would you clear the trades?
Quant Trading Researcher
I did an on-campus interview where I got a programming problem about moving averages. After passing that, I was invited to Chicago for a super-day. The office was really nice and they fed us. During the super-day, I had 5 interviews with most of the people in the office.
- Can you write an algorithm to invert a matrix?
- How would you use Venmo data to make money?
- What are the estimators for beta1 and beta0 in a simple linear regression model?
Data Platform Engineer
I got a 15 minute recruiter screen. It was mostly just introducing myself and then some follow up questions. They also gave a summary of Radix's data pipeline infra and the team, and I had some time for questions. After that, they asked me to forward my resume to the hiring lead, but I didn't even get past the resume screen.
- Can you introduce yourself?
- Describe the architecture of data pipelines you have built or maintained.
Radix Trading Interview Questions
Quoted word for word from Radix Trading interview reports.
“What are the estimators for beta1 and beta0 in a simple linear regression model?”
Read reports →“What is the Nash equilibrium for a game involving probability?”
Read reports →“What's the largest set of boxes from a given collection that can be nested sequentially?”
Read reports →“Can you write an algorithm to invert a matrix?”
Read reports →“What is the probability of a conditional expectation?”
Read report →“Could you write Python code to generate all permutations of a list of integers from 1 to n, and then analyze the time and memory complexity of your algorithm, aiming for optimal solutions?”
Read report →“Given a linked list representing stock bids and asks, how would you clear the trades?”
Read report →“How will you troubleshoot a router that is not functioning properly?”
Read report →“How would you use Venmo data to make money?”
Read report →Formats, difficulty and experience
Across all 12 Radix Trading interview reports.