NLP Data Scientist applicants have rated the interview process at TNO 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 80% positive. This is according to Glassdoor user ratings.
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There will be two interviews, but the decision basically in the first round. Second round is for salary, etc. You speak directly to the researchers you will work with. No HR is involved in the process.