What are the differences between temporary agent and contract agent? Is it possible to be hired in one of the two categories without having passed the CAST? And what about the internal / external competitions? Thank you very much to who is willing to answer :)
You can apply for temporary
You can apply for temporary agent positions directly, but you must pass the CAST tests for a CAST position. More info here:
https://eu-careers.europa.eu/en/selection-procedure/how-apply
Internal competitions are organised exclusively for candidates already working in the Institutions.