IOS Developer applicants have rated the interview process at Quantum4U 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 100% positive. This is according to Glassdoor user ratings.
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It was good, basic questions were asked in the first round. Then there was the second round with the CTO and then there was a third round with coding question as well as data structures and algorithms.