オーバースペック

noun which may take the genitive case particle 'no', na-adjective, noun

overspec; over-engineered; excessive specs

Describes a product, system, or design that has specifications far beyond what is needed, often implying wasted cost or complexity.

• このパソコンはオーバースペックで、普ふ段だんの作さ業ぎょうにはもったいない。

  This PC is overspec and too good for everyday tasks.

• オーバースペックな設せっ計けいはコスト増ぞうにつながる。

  An over-engineered design leads to higher costs.

noun which may take the genitive case particle 'no', na-adjective, noun

overqualified (job candidate)

Used for a person whose skills or experience exceed the job requirements, often seen as a hiring risk.

• 彼かれはこのポジションにはオーバースペックだ。

  He is overqualified for this position.

• オーバースペックな人じん材ざいを採さい用ようすると、すぐ辞やめてしまうかもしれない。

  If you hire an overqualified person, they might quit soon.