Citadel Online Assessment Questions
10+ real Citadel OA questions from candidate reports. Sourced from 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. Browse by year to find the most recent data, or view the full OA question set filtered on the main company page.
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Recent Citadel OA Sample Questions
2026 Citadel Internship Timeline
Posting this because I see people asking questions about the process. If you have any questions, feel free to put it in the comments, and please don't DM. I can't provide my resume or specific intervi
Just completed Citadel Launch HackerRank OA and passed all test cases what are my chances?
Hey everyone, I wanted to share my experience and get some honest feedback on my chances. Background: \-Sophomore at University of Waterloo (Electrical Engineering) \-CEGEP( preuniversity program in Q
Citadel Maven Trading Internship Online Assessment Overview
21 probability questions, 30 minutes: questions like: Conditional probability: 1% of population has disease. 99% accurate test if you have disease, 95% accurate if you don't have disease. p(you actual
Citadel Securities C++ Engineer Online Assessment Experience
The task required refactoring and optimizing a convoluted C++ codebase within a 1.5-hour limit to prevent execution timeouts. The code relied heavily on obfuscation to conceal the actual logic, utiliz
What kind of performance do trading firms look for in their hiring process?
So I gave the online assessment for Explore HRT, which is a 2-3 day program by Hudson River Trading for sophomores to get a hands on experience into how HRT works and learn about the field. There were
I have no C++ or Python experience, why did I receive an interview from Citadel (internship)?
I have virtually zero C++, C, or Python experience or projects on my resume, and nothing low-level like what Citadel does. My resume is full of TypeScript, app dev, React, cloud, etc. I also did not g
Citadel | Senior Software Engineer | Reject
Hi, I had two coding rounds at Citadel. Round 1: I was asked one medium question: A list of currency relationships with exchange values. (BTC - USD) find the best exchange rate from currency1 to...
Citadel 2024 summer internship OA
Just finished OA but didn\'t pass all the test cases. Tho I finished doing this, still wanna know how to solve Q1... 1. Hacker\'s Team \tSimilar to https://leetcode.com/problems/longest-increasing-subsequence/ \tThe transformation is there are 2...
Visiting Cities Hackerrank 2023 OA - New Grad
Visiting Cities There are a number of cities in a row, and there are two bus lines that go between them. They both visit all cities in order, but one may take longer...
What to expect from a Citadel Phone Screen Interview?
As above, am heading for a Citadel phone screen hopefully next week. I have no idea what difficulty to expect, as there seem to be loads of conflicting opinions on Reddit and elsewhere about the gener
Most Common OA Topics
Citadel OA Format and Platform
The Citadel online assessment is delivered through a proctored online platform, most commonly HackerRank. Candidates receive the OA link by email after passing an initial resume review. The coding section typically contains 2 to 3 algorithmic problems with a 70 to 110 minute time limit.
Some Citadel teams include an additional work simulation section that tests judgment and decision-making rather than coding ability. This section is not present for all roles. Check the LeakCode question database filtered by role type to see what past candidates for your specific role reported.
FAQ
Does Citadel have an online assessment?
Yes. Citadel uses an OA as the first technical screen for most engineering and technical roles. It is typically sent after a resume review and before any human interviews. The format has remained consistent across recent hiring cycles.
How hard is the Citadel OA?
Based on candidate reports, Citadel OA problems range from LeetCode medium to hard. Expect at least one problem that requires an efficient algorithm (not brute force) to pass all test cases within the time limit.
Where do these OA questions come from?
All questions in the LeakCode database are sourced from actual candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where the original report is public.
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