In person talking interviews. Talked to 4 different people on site at the same day. Some Java related questions. Depends on who you're interviewing, but not a formal typical white board interviews.
Contract Software Engineer applicants have rated the interview process at Georgia Tech Research Institute with 2 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 79.4% positive. This is according to Glassdoor user ratings.
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