There are 4 different rounds of interviews. At each of the rounds, it gets more difficult and passed onto different teams in the organization. HR is both the first and the last rounds of the interview process.
Principal Linux Engineer applicants have rated the interview process at NTT DATA with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 64.7% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -