noun
rank-and-file employee; ordinary staff member
Refers to a regular employee without a managerial title; often contrasted with 管理職 (managerial positions).
彼はまだ平社員だが、仕事はできる。
He's still a rank-and-file employee, but he's capable.
平社員から課長に昇進した。
I was promoted from an ordinary staff member to section chief.