Visa | Senior Data Engineer | Bengaluru | Oct [Reject]

I interviewed for a Senior Data Engineer position at Visa in Bengaluru in October . The interview process consisted of an online assessment, followed by two video interview rounds.

The online assessment included three coding questions: two medium difficulty and one hard difficulty. The questions were as follows:

1. Matrix reverse diagonal traversal
2. Given a pair of integers (a,b), validate if after performing certain operations zero or multiple times it can be converted to (c,d)
3. Given two arrays, find the minimum moves to match array 1 and array 2. A move is defined as an increment or decrement of one element in an array.

The first video interview round was a coding round with two questions: one easy and one medium difficulty. I cannot recall the first question clearly, but it involved HashMaps and arrays. The second question was: Given a list of ranges and a target number, find in which range that target number will occur. If not found, return "-".

The second video interview round was a Data Engineering round with three questions: one coding and two SQL. The first question was the same as the second question from the first round, but the input data was given in the form of a table, requiring some preprocessing. The second and third questions were basic SQL queries involving GroupBy and Year-Month GroupBy, respectively.

The interviewer in the second round seemed to be in a hurry and was constantly jumping from one topic to another, which made the interview experience less than ideal. Ultimately, I was rejected for the position.