Tech IndustryOct 2, 2019
NewNanami

Citadel onsite what to expect?

Having onsite at Citadel soon for internship. What should I expect? Done around 470 LCs. Some people say they ask operating systems stuff and networking. Never really took those classes before. How should I approach about learning those or preparing for interview?

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Bloomberg TimeToPlay Oct 2, 2019

After 470 LC, I’d say expect it to be a breeze. I don’t think they ask networking and OS questions any more... But everything is possible. One of my friends told me that all of his interviews were just conversations with no problem solving or system design. WTF.

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Nanami OP Oct 2, 2019

Oh nice. Thanks for sharing

Microsoft ly5ep1 Oct 3, 2019

Citadel needs excellent GPA(>3.6/4.0), is it true?

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Nanami OP Oct 3, 2019

Idk but I have GPA in that range

Bloomberg gGAL37 Oct 3, 2019

I just had a phone interview with citadel securities. I was only asked networking, multithreading, and OS questions. One coding problem but that was based on low level implementation and not algos.

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Nanami OP Oct 3, 2019

This is for internship? Thanks

Bloomberg gGAL37 Oct 3, 2019

No. This is after 1yoe for generic SWE position.

Intel vksgh Oct 3, 2019

Same here. Expect OS and multithreading questions.

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Nanami OP Oct 3, 2019

Have you been to onsite for internship before? Thanks

Citadel Securities bluetiger Oct 3, 2019

Usually it’s LC and potentially system design type questions. I haven’t heard OS/networking questions for SWE but could get some concurrency problems (build a thread-safe x).

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Nanami OP Oct 3, 2019

Nice info. Thanks

Bloomberg wnuJ08 Oct 3, 2019

Interview is a joke. LC easy or medium for algo questions. They asked me a bunch of threading questions, dist sys, c++ vs java, and system design was a geared more towards to u know how to write maintainable code (exception handling, extensibility). You code on a laptop. Overall, not as difficult as tech company interviews

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Nanami OP Oct 3, 2019

Oh nice info. I assumed u got the offer then😁. Did you interviewed at NYC or Chicago? I assumed there should be no difference?

Bloomberg wnuJ08 Oct 4, 2019

Nyc, but no difference. Some interviews were video conf with chicago