▁Pierre ▁and ▁Marie ▁Cur ie ▁University , ▁now ▁part ▁of ▁Sor bon ne ▁University , ▁in ▁Paris , ▁France . ▁ ▁In ▁ 1 9 9 5 , ▁he ▁joined ▁the ▁Centre ▁de ▁recherche ▁en ▁inform atique ▁de ▁Montr éal ▁in ▁Canada ▁as ▁the ▁Le ad ▁Research er , ▁where ▁he ▁founded ▁and ▁lead ▁the ▁Tele communic ations ▁and ▁Dist ributed ▁Systems ▁Research ▁Division ▁and ▁later ▁became ▁its ▁Director . ▁In ▁ 1 9 9 9 , ▁he ▁joined ▁the ▁University ▁of ▁Water lo o ' s ▁David ▁R . ▁Cher it on ▁School ▁of ▁Computer ▁Science ▁as ▁an ▁Ass istant ▁Professor . ▁He ▁was ▁promoted ▁to ▁Associ ate ▁Professor ▁in ▁ 2 0 0 2 ▁and ▁to ▁Professor ▁in ▁ 2 0 0 7 . ▁B out aba ▁has ▁been ▁the ▁Associ ate ▁Dean ▁of ▁Research ▁in ▁the ▁Fac ulty ▁of ▁Mathemat ics ▁since ▁ 2 0 1 6 . ▁He ▁became ▁a ▁University ▁Research ▁Chair ▁in ▁ 2 0 1 8 , ▁a ▁position ▁typically ▁held ▁for ▁seven ▁years . ▁ ▁B out aba ▁held ▁a ▁Cher it on ▁Fac ulty ▁Fellow ship ▁at ▁the ▁University ▁of ▁Water lo o ▁from ▁ 2 0 0 7 – 2 0 1 0 ▁and ▁again ▁from ▁ 2 0 1 2 – 2 0 1 5 . ▁He ▁also ▁held ▁a ▁Fac ulty ▁of ▁Mathemat ics ▁Fellow ship ▁from ▁ 2 0 0 3 – 2 0 0 6 . ▁ ▁B out aba ▁held ▁visit ing ▁professor ships ▁at ▁the ▁University ▁of