When crafting, technological items require the use of Engineering.
Magical items require the the use of Mysticism.
Hybrid items require the use of both.
My question is, can two characters, each with only one of the appropriate skills, work on a hybrid item together?
Since there is little mechanical gain to crafting in Starfinder (you must still pay the same price but there are some very minor benefits) I would allow two characters to cooperate on it.