The company is an early-stage start-up, and the founder takes hiring seriously. Expect multiple rounds with the founder that could be 1 or more hours. There is an immersive amount of talent for such a small company, and it is because they take a slow, thought-out decision for hiring.
First round - Toured facility, met with CEO and Chief Commercial Officer
Second round - Interviewed with the current application engineer, production manager, CEO, Founder
Third Round - 2nd interview with Founder
Fourth Round - Review of offer with CEO