it is really hard to answer your question, since we don't know what is your
job position.
But you can say: 1) Because of business necessity. Due to our company's
growth this person must has a Master's degree in order to
offer the best services to our clients. 2) Job duties are very unique and
technical, so that requires people who's educational background with a
Master’s degree and professional experience enable her/him to fulfill the critical duties of this vital role.3) Similar job tile in the