Translation of "executive assistant" into Chinese

I was executive assistant to the late Mr. Eckhardt.

我 是 埃卡 先生 生前 的 行政助理

The Executive Assistant will assist the Executive Chairman in carrying out his responsibilities relating to substantive, organizational, administrative, personnel and budgetary matters.

执行助理将协助执行主席履行实务、组织、行政、人事和预算方面的职责。