Katkat

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Interactive Brokers interview questions

3 practice questions in the style of Interactive Brokers's interviews, covering Coding & Algorithms.

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1 easy2 medium0 hard

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Interactive Brokers interview questions by the numbers

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Katkat has 3 Interactive Brokers interview questions. The largest topics are Coding & Algorithms (100%). By difficulty: 33% easy and 67% medium. The most common round is Online Assessment (67%). Frequent concepts include Arrays, Greedy, Math and Simulation.

Topics

Difficulty

  • Easy33% · 1
  • Medium67% · 2

Interview rounds

  • Online Assessment67% · 2
  • Technical Screen33% · 1

Roles

  • Software Engineer67% · 2
  • Data Engineer33% · 1

Frequent concepts

  • Arrays33% · 1
  • Greedy33% · 1
  • Math33% · 1
  • Simulation33% · 1

Showing 1–3 of 3 results

  • Calculate Tax Under Progressive Income BracketsMedium

    This problem tests the ability to iterate through sorted intervals and calculate values based on overlapping ranges, requiring careful boundary handling.

    Interactive BrokersSoftware EngineerCoding & AlgorithmsOnline Assessment
  • Calculate Tax in a Progressive Marginal Tax SystemEasy

    Practice a Interactive Brokers coding interview problem focused on calculate tax in a progressive marginal tax system. The prompt emphasizes edge cases, clean implementation, and verifiable test behavior without revealing the solution.

    Interactive BrokersSoftware EngineerCoding & AlgorithmsOnline Assessment
  • Compute Minimum Production DaysMedium

    A data engineering coding screen on greedy scheduling under a cooldown constraint: produce an ordered list of products, one per day, where each product type must cool down for `space` days before it can be produced again. Candidates must return the minimum number of days, ideally in O(n) time using a hash map of last-produced days.

    Interactive BrokersData EngineerCoding & AlgorithmsTechnical Screen

Interactive Brokers interview experiences

All 1 →
  • 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…

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