I'm a personnel manager.

我是人事部经理。

This is our new personnel manager Mike.

这是我们新人事部经理迈克。

My name is John Smith, the personnel manager.

我是约翰·史密斯，人事部经理。

The personnel manager called on her in person.

人事经理亲自拜访她。

Then I was promoted to the personnel Manager.

是的，我做过公司的人事部经理。