Questionnaire as part of the application, then a TestGorilla Assessment. If you're a favorable candidate, they set up a screening interview with an HR representative. Next is a panel interview with members of the team that you'll be working with. Seems like a great company to work for.
Product Owner applicants have rated the interview process at Vector Airport Systems 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 50% positive. This is according to Glassdoor user ratings.