We could make sure that a person only has to do that trial once in their career and then every other company should accept that they've done it because they've

We could make sure that a person only has to do that trial once in their career and then every other company should accept that they've done it because they've proven they've done it. We could call it an Apprenticeship or an Engineer-In-Training stage. (Where have I heard those before?~)