Certain words have a gender bias. The use of these terms in a job description can create an unconscious bias, leading to a less diverse array of applications. When writing out copy for an employment opportunity, it is important to avoid any phrases that assume the audience is of a particular sex. Instead neutral wording should be employed, which can be applicable to anybody regardless of their background or gender identity.
The use of he, or she, is a typical example of gendered wording. Those phrases should be replaced with you, they, or another term which does not reflect a particular identity. There are also certain words, such as ploiceman, or stewardess that can be replaced with more neutral terminology such as police officer, and flight attendant. For a full list of best practices when trying to eliminate gendered wording from copy refer to this article.