人材
じんざい · jinzai · JLPT N1 · noun
endowment
人 (person) + 材 (timber, talent) = a person who is valuable building material
材 originally meant timber or raw building material, and later came to mean innate ability. So 人材 is a person who is good material to build with: skilled and worth developing.
人 — pictograph of a standing person
人 is a pictograph showing a person viewed from the side, with two strokes representing the legs and torso of a standing human. In oracle bone script it clearly depicted a figure leaning slightly forward. The meaning has remained 'person' or 'human' throughout its history.