I applied online via another company, Inovant LLC, which is a subsidiary of Visa. After a little over a month or two, I was contacted by someone from the Austin office.

The position was for a .NET/C# Senior Engineer. The whole process consisted of three rounds:

• Talent acquisition phone interview
• Hiring manager phone technical interview
• On-site multi-group interview

Round One: 15 to 30 minutes with talent acquisition.

Round Two: 30-minute call with the hiring manager.

Round Three: 2 to 3-hour face-to-face group interviews. Two in all, both with two interviewers:

• First group: Quick "30 questions" over .NET technology (LINQ, SQL, describe an abstract class and its purpose, MVC, WCF, WebAPI, etc.), one whiteboard algorithm code test.
• Second group: Quick "30 questions" over .NET technology, questions over SQL, one whiteboard SQL test, questions on how to write T-SQL or optimize a database for very large tables (large as in over a million records).

Also, I had exchanged emails with the hiring manager a few times about citizenship questions and pay expectations. Overall, the experience was alright.

The main issue I had was that I thought there were too many questions for the time allotted in each group interview. I was not given hardly any time to ask questions; it felt more like an interrogation than a two-way interview. It seemed the more quick questions I answered correctly, the harder they got and the more they asked.

Write a method to reverse all letters in a string, then support how efficient it is or could you do better. Hint: remember Big-O algorithm complexity.

Write SQL that combines relations between three tables and displays the date in only the month. The date was stored on a daily basis. Hint: SQL with 2 inner joins.