I applied through college or university. The process took 1 day. I interviewed at Visa Inc. in Feb 2015
Interview
They came to my college and conducted an online test. The test involved questions from Machine Learning, Big Data, Data Structures, Networking, Database, Computer architecture, Coding Languages, OOPs and System Programming. After the test, I had three PI rounds. The first round was more on Data Structures, Networking, Database, Project discussion and Puzzles. Second Round was also technical. They ask me to code for a given problem. The third round was taken by HR.
Interview questions [1]
Question 1
f(n) = a*(f(n-1))+b*(f(n-2))+c*(f(n-3))
where 1<=n<=10^9
and a,b,c and n will be the input.
Output:
o/p f(n)%10^7
Time Limit: 1 sec
Had two technical interviews, back to back. Medium leet code problems. Not that hard. After received an email that they did not proceed with me, but had other manager internally interested in my profile
First round OA
Second round interview in which I was given a dp question and then asked about my projects in detailing then we move to some oops and language based questions
The interview process started with a coding test from Hackerrank with 2 easy and 1 intermediate question. I found the questions to be rather difficult given that you are not allowed to use google or check syntax.
Interview questions [1]
Question 1
The asked me to implement LFU cache with lower complexity than o(n)