Former Arsenal midfielder Edu returned to the club on Tuesday to take up the role of technical director with the Gunners.
"Edu will coordinate the work of our first-team coaching group, the academy and player scouting and recruitment," Arsenal said in a statement.
Edu will leave his role as general coordinator for the Brazilian Football Confederation after the team won the Copa America on home soil.
The 41-year-old, a member of Arsenal's unbeaten Premier League winning squad in 2003/04, will become the club's first ever sporting director as they continue to modernise their recruitment structure following the departure of Arsene Wenger last year.
"His arrival is the final and very important part of the jigsaw in our development of a new football infrastructure to take us forward," said Arsenal's head of football Raul Sanllehi.
"He will be working closely with Unai Emery and the first-team coaches, and will play a relevant role leading our football vision."