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Interactive Brokers Interview Experiences
3935 interview stories from candidates at 857 companies: how each round went, what was asked and how it ended. Every company page links to practice questions in the same style.
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- A 1-Hour OA With Math Puzzles and a Progressive Tax Bracket Coding ProblemInteractive Brokers · Software Engineer · Online Assessment · Apr 2026
Last week I got a call from an IB recruiter asking if I wanted to try out for an SDE role. After I confirmed, I quickly got an OA scheduled — one hour. The OA was split into two parts. Part 1 was middle-school-level math multiple choice. F(x) = 3x - 1, f(f(x)) = 1, what's x? Answer: 5/9 I don't remember this one at all — it should have been a pretty simple question. A square is made up of three e…