Copyrighting of commercial content

Love Mondays is a platform on which companies in Brazil can promote themselves to job seekers through providing real insight into how it is to work in their organizations. We require the services of a copyrighter to help craft the company promotional pages. This would involve the following:
--> Taking small samples of existing company promotional material and condensing this into a coherent text of uniform style of c.
200-400 words.
--> Interviewing 3 employees of the company (phone conversations of c. 15 minutes each) and writing a 'day-in-the-life' text, each of c. 200-400 words.

--> Interfacing with the client to refine the text until they are satisfied.

The copyrighter must be native Brazilian (or speak Portuguese to this level) with an eye for detail and good interpersonal skills.

While we are seeking a quote for performing the above activities for a single company, we would like to build a long-term relationship with the copyrighter so that we can contract with them as and when we make sales in the future.