I applied online. The process took 4 weeks. I interviewed at Citadel (New York, NY) in Aug 2024
Interview
Very long process for a very competitive internship but I thought it was generally fair.
Apply online and immediately get a 66 minute hackerrank -- two LC med/hards. This + resume screen determines next rounds.
If you clear OA + resume, 45 minute phone interview that is 15 minutes behavioral and 30 minutes technical. If you clear the onsite, they progress you to a superday -- basically just the phone round but three of them back to back. The tech rounds can be anything but I generally just got LC Mmed or easier hard with a focus on implementation and class design. They want you to solve it optimally and compile/test, less of a focus on code style or cleanness.
If you clear the superday you enter team matching, where hiring managers decide whether or not to interview you for their org. Process seems very unstandardized from here, I had a behavioral and after that a technical (which was very hard).
Interview questions [1]
Question 1
LC Medium/Hard, implementation questions, why do you want to work here and what do you want to do next summer type stuff
En el sitio web envías tus datos personales y tu CV.
Luego recibes una prueba automatizada en hackerrank.
La prueba consiste de dos problemas de algoritmia con duración de 75 minutos. Para cada uno, se verifica si el código compila y pasa todos los tests. Aunque cuando no pasa esto igual se guarda en la nube el código.
No recibí respuesta, feedback ni ninguna clase de follow-up. Sentí que perdí mi tiempo con algo automatizado.
I applied online. I interviewed at Citadel (New York, NY) in Oct 2025
Interview
First had an online assessment, passed and moved onto a first round technical. 45min, solved 2 questions that were around leetcode mediums, purely technical. Had a superday that was 3 back to back 45 min technicals. Did not progress further.
typical online assessment with leetcode medium type coding questions, followed by technical and behaviorial interviews. typical online assessment with leetcode medium type coding questions, followed by technical and behaviorial interviews.