ペーペー

noun

underling; newbie; small fry

Colloquial, often self-deprecating or derogatory term for a low-ranking, inexperienced person in a workplace or group. Used humorously or humbly about oneself, or dismissively about others.

• 入にゅう社しゃしたばかりのペーペーです。

  I'm just a newbie who just joined the company.

• ペーペーのくせに生なま意い気きだ。

  He's just a small fry but acts so cocky.