From the article:
The Language Services Department comprises 17 employees; that is, 14 translators, two interpreting coordinators, and the head of department
“We prefer to work with freelance translators, many of whom have worked with us for a number of years and are very familiar with our style, terminology, and types of documents.”
Interesting article, but before you jump onto the FIFA website to sign up as a freelance translator, you should know that it seems like these would be volunteer positions (so, unpaid). The article doesn’t seem to make any mention of this.