noun
Refers to a person whose job is cleaning, such as in a building, school, or public facility. Neutral term.
学校の掃除人は毎朝早くから働いている。
The school janitor works from early every morning.
彼はオフィスビルの掃除人として雇われた。
He was hired as a cleaner for the office building.
Compound of 掃除 (cleaning) and 人 (person). The exact historical derivation is straightforward; the word is a transparent modern compound.