その上うえで

expression

moreover; in addition; on top of that

Used to add another point or action, often after stating a preceding condition or fact. Common in both spoken and written Japanese.

• 彼かれは仕し事ごとが早はやい。その上うえで、ミスも少すくない。

  He works quickly. Moreover, he makes few mistakes.

• 資し料りょうを確かく認にんした。その上うえで、担たん当とう者しゃにも質しつ問もんした。

  I checked the materials. In addition, I asked the person in charge.