" if a senior guy from the parent company, say Twitter (US) comes to Ireland and tells an IT guy working at Twitter (Ireland)"
As per my reply to Vimes, the international operation would have to be a separate operation. So if the senior guy from Twitter (US) isn't wearing his visitor's badge the IT guy simply calls security to get him escorted from the building. Because a visitor would be his only possible status.
Biting the hand that feeds IT
