u/i_need_help-thankyou

Hello i am a recent graduate of Interior Design, i have good knowledge on designing floor plans, 3D visuals and rendering. I recently have been interested in doing CAD DESIGN for an engineering company, however i have no idea what a cad designer does in the engineering industry, and have no idea how to start,
Would anyone know where i start and what to do? Or is this even a job path to go to?
Im not very good with auto cad, revit which I believe is what i need to learn.