Baber is to take on a new Head Coach position overseas. The 41-year-old has enjoyed a long association with the Blues after initially joining the Academy set-up following his retirement from playing in 2007.
The former scrum half, who featured for Cardiff, Llanelli, Aberavon, Bristol Rugby, Pontypridd and Newport Gwent Dragons during his playing days, has also previously worked as Assistant Coach with Wales Under 20s and coached Wales 7s.
Director of Rugby Phil Davies said: “Gareth has been a fantastic servant to the Blues over the years. He has come from the Academy set-up, after Dai Young gave him a chance, and I’ve always valued his work ethic and professionalism, which is second to none.
“His enthusiasm for the game really is fantastic and he has a thirst for knowledge and to develop and get better. I know he will give everything over his remaining time with us.
“Gareth now has a wonderful opportunity, alongside his family, to go and work overseas and he will go with our very best wishes at the end of the year.”
Baber will remain at Blues until the end of 2013 and insisted he still had much to achieve in the coming months.
He said: “I would like to thank everyone concerned with the Cardiff Blues, players and staff, but also pay a specific thanks to the fantastic fans who have gone through all the changes with the region and showed unwavering support.
“Opportunities like the overseas role I will be taking up do not come along very often and I see it as a progression for me in terms of the job specification. It’s a good challenge to add to my skills as a coach and I thank Cardiff Blues for their understanding and support with this.
“I am now focussed on the rest of the year at Blues and all we have still to achieve. We have a big European competition to look forward to and a clear focus to gain positive results in the RaboDirect PRO12.”