This is the 17371st most frequent Korean word.
선임고문을
"Senior advisor" or "senior consultant."
In this sentence, '선임고문을' refers to the senior adviser position that the person is responsible for.
그는 회사의 선임고문을 담당하고 있습니다.
He is in charge of the company's senior adviser.
Here, '선임고문을' is used to specify the senior adviser who was invited to be part of a discussion.
그들이 합병 논의 중 선임고문을 초청했습니다.
They invited a senior adviser during the merger discussions.
In this example, '선임고문을' denotes the senior adviser role that the government intends to appoint.