My father serves as an auditor for a major corporation.

He is serving as the president of the company.

He works at a major IT company.

We need to audit the company's financial situation every year.

We audit the company's financial situation every year.

My father works at a large enterprise.

My duty is to make this project successful.

He played the leading role in the movie.

He played the leading role in the movie.

He played an important role in that war.