This is the 18012th most frequent Russian word.
финансистом
A financier.
In this sentence, 'финансистом' is in the instrumental case, emphasizing the profession or role of being a financier.
Он всегда хотел работать финансистом.
He always wanted to work as a financier.
Here, 'финансистом' also represents the profession, used to express pride in achieving such a status.
Она гордится тем, что стала финансистом.
She is proud to have become a financier.
In this example, 'финансистом' is used to indicate the role or position he assumed in his career.