I applied online. I interviewed at Fidessa (New York, NY) in June 2017
Interview
I finished the application online and received OA a few days later. There are two questions required me to finish em in 1 hour. Both are easy question so it took me 40mins. I received the next round interview after 1 work day I finished the first round.
Interview questions [1]
Question 1
At an airport, you have a timetable for arrivals and departures. You need to determine the minimum number of gates you’d need to provide so that all the planes can be placed at a gate as per their schedule.
The arrival and departure times for each plane are presented in two arrays, sorted by arrival time, and you’re told the total number of flights for the day. Assume that no planes remain overnight at the airport; all fly in and back out on the same day. Assume that if a plane departs in the same minute as another plane arrives, the arriving plane takes priority (i.e. you'll still need the gate for the departing plane); Write a function that returns the minimum number of gates needed for the schedules you're given.
Example:
arr = {900, 940, 950, 1100, 1500, 1800}
dep = {910, 1200, 1120, 1130, 1900, 2000}
flights = 6
In this example the return value should be 3 since the schedules for at most 3 planes overlap.
Arrive 9:00 ; 1 gate
Depart 9:10 ; 0 gates
Arrive 9:40 ; 1 gate
Arrive 9:50 ; 2 gates
Arrive 11:00 ; 3 gates
Depart 11:20; 2 gates
Depart 11:30 ; 1 gate
Depart 12:00 ; 0 gates
Arrive 15:00 ; 1 gate
Arrive 18:00 ; 2 gates
Depart 19:00 ; 1 gate
Depart 20:00 ; 0 gates
I applied online. The process took 2 weeks. I interviewed at Fidessa (New York, NY) in July 2022
Interview
Bizarre and disrespectful. No coding questions asked, but he did ask me to speak a lot in detail about my project at my last job 2 years ago, down to details in the implementation that I could barely recall.
Interviewers should respect or realize that other companies have NDAs and it's icky to press for super fine-grained technical details, but he kept asking.
He also challenged things my company did and acted like he knew better than the people who actually worked there, and I was caught so off-guard I only realized after the interview how incorrect he was.
For instance, I brought up the technical challenge of loading "50 2-minute videos 1080 p videos at 60 fps" from disk to heap memory." He very confidently told me that we could've just loaded all frames of all~ 50 videos at once into a very big array and that any personal computer which had 32 GB of RAM was "more than enough".
There's a difference between RAM and heap memory, but even assuming I could allocate a 32 GB array in C++ without problems, the *actual* amount of memory required would've been 4 bytes/pixel x (1920×1080) pixels/frame x 60 frame/sec x 60 sec/min x 2 min x 50 videos = 2985.984 GB
(This was just one of a few instances where he was like "maybe you guys should've tried this".)
Also, I just got ghosted with not follow up interview. Was a waste of time, and it's sad they have interviewers who can't do math :(
I applied online. I interviewed at Fidessa in Dec 2019
Interview
I applied online and got interview.
1 hackerank
1 video recording
1 code-pair (currently at this)
round 1: hackerank, you have to use C++ to code. Review array, loop, some C++ functions syntax would be helpful
round 2: video recording. You are given 5min to prepare, 5min to talk. You will need webcam, and record devices. Try to pace your speed.
I applied online. The process took 2 weeks. I interviewed at Fidessa (New York, NY)
Interview
I have received a Hackerrank challenge the next day after I applied. And after a week, i received a sparkhire video interview, and I haven't finished the video interview.
