person who does

Kind of like the use of "-er" in English which turns a verb like "build" to a noun like "builder" 译者 - yì zhě - translator 医务工作者 - yī wù gōng zuò zhě - medical worker (can be used in the same manner for almost any noun phrase ending with 工作 indicating a line of work) 前者 - qián zhě - the former 后者 - hòu zhě - the latter by jkao