Algorithmic Trader
Posted Sep 11, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about an algorithmic strategy you worked on. What was its edge and how did you know it was real?
What they are checking: Whether they can separate true edge from noise or overfitting.
You work closely with our technology team. Tell me about a time you and a developer disagreed on how to build something.
What they are checking: Ability to collaborate with engineers and find solutions both sides trust.
Tell me about a time a system you designed failed in an unexpected way.
What they are checking: Whether they design robust systems and learn from edge cases.
What would you do
A strategy that was profitable last month is now losing money. Walk me through how you find out why.
What they are checking: A methodical, data-focused troubleshooting process, which the posting stresses.
If you wanted to expand into a new product, how would you decide if it is worth it?
What they are checking: Business thinking about market share growth, costs and competition, as the posting mentions.
What data would you want to see every morning to know your strategies are healthy?
What they are checking: Whether they have a habit of monitoring and catching problems early.
About the work
How does market microstructure affect how you would quote equity or futures options?
What they are checking: Understanding of queue position, tick size, fees and adverse selection that drive market making results.
How would you tune the parameters of a trading model without overfitting to past data?
What they are checking: Statistical discipline with out-of-sample tests and simple models.
What risk limits would you put on an automated options strategy, and why?
What they are checking: Whether they think about Greeks, position limits and kill switches before scaling up.
How do you measure the quality of order execution?
What they are checking: Familiarity with slippage, fill rates and markouts as ways to judge execution.
Here is a simple problem: you flip a fair coin until you get two heads in a row. What is the expected number of flips?
What they are checking: Quick, clear probability reasoning that trading firms rely on for fast decisions.
Practice this interview out loud.
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Practice this out loudThe full job description
As published by Simplex Trading.