Jump Trading Software Developer interview questions

Ran into them at a career fair and answered a few quick coding questions (Write the function isPalindrome in any language, write a function to print numbers 1-100 in python). Within about a week, I was brought in for an on-campus interview. The interview was pretty standard; they asked me to talk a little about my resume then answer a white-board coding question. After about another week, I was flown out to their Chicago office for a full day of interviews. There were 5 interviews total: four technical, one behavioral.

very add experience. After passed the online programming test, I was scheduled a phone interview with HR director. What happened was: 1. asked me to move the phone interview to a different time 5 minuets before the appointment time without any reason. 2. for the 2nd scheduled phone interview time, HR told me their director was in airport 2 hours before the scheduled time. 3. HR director did not call me at the scheduled time without any notice. 4. HR called me finally, without making apology. I used line phone to receive the call, but the director said that sound quality was bad and called me back later. I never received the call later. 5. contacted company to reschedule the phone interview time, no reply