First of all, thankyou for finding the career section of my website. Although all functionalities are working as they should, the menu might be difficult to operate with iOS. This has to do with the 'mouse hoover-over' expansion poperties of the 'Vacancies' button. When you hold your iPad 'portrait' instead of 'landscape', the screen migtht force a black-and-white 'hamburger' menu-selector in the upper right corner, which can be operated as usual. This should solve the problem.
Currently, Bureau Janssen is working on some very challengeing roles which cannot be published. You'll be contacted directly (and possibly surprisingly) by Jan Janssen when your background seems to be fitting with the role.