in a very influential position.

担任要职
In that--

在...
he deserves a more coherent introduction--

有必要为他多做一些介绍
in that position,

在职期间
he was responsible for a worldwide framework convention on tobacco control

他负责国际控烟框架公约
and was also instrumental in a framework convention

也曾协助制定饮食体育活动
for diet, physical activity, and nutrition,

以及营养框架公约
and reported directly to the Director General of the WHO.

并直接上报给世卫组织总干事
He then came to Yale University,

在那之后来他来到耶鲁大学
where he was on the faculty of the School of Public Health.

担任公共健康学院的一名教员
He went here to The Rockefeller Foundation,

并在此投身于洛克菲勒基金会然后
and then joined the PepsiCo Corporation as Director of Global Health Policy,

加盟了百事公司并担任全球卫生组织主管