Brady quits Republic of Ireland role
"The decision to end my involvement has been taken in light of my continued work as director of youth development at Arsenal," Brady said on the Football Association of Ireland's website on Saturday.
"The Ireland role required me to be away a lot of time and, although Arsenal made it clear they would have been quite happy for me to continue, I have decided it is not right... to remain in position after I complete my contract this April."
Former Arsenal and Juventus midfielder Brady was appointed by Ireland's Italian manager Giovanni Trapattoni in March 2008. The team failed to reach this year's World Cup in South Africa.