Environmental Science Intern applicants have rated the interview process at HDR 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 71.2% positive. This is according to Glassdoor user ratings.
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It was simple and straightforward—one interview with two members of the team. It was mostly behavioral. They described the nature of the internship in a lot of detail. I heard back in about 3 weeks.