noun
post office worker; postal employee
Refers to a person who works at a post office, typically in a clerical or counter role.
郵便局員が親切に手続きを教えてくれた。
The post office clerk kindly explained the procedure to me.
郵便配達員 specifically refers to a mail carrier or delivery person, while 郵便局員 is a broader term for any post office employee, including counter clerks.
Compound of 郵便 (postal service), 局 (office), and 員 (member/staff).