IPA: /ˈmæɡəˌzɪnɪst/
KK: /mægəˈzinɪst/
A person who writes articles or edits content for a magazine.
The magazinist worked late into the night to finish the latest issue.
Magazinist is derived from "magasin" (from Middle French *magasin*, meaning store or warehouse) and the suffix "-ist" (meaning one who practices or is concerned with). The term refers to a person who works in or is associated with a magazine or store.
Think of a 'magazine' as a place where items are stored ('magasin'), and the '-ist' indicates a person involved with that place.