Mutamangira began his rugby career playing for Harare Sports Club in Zimbabwe in 2004.[1]
He moved to Scotland where he played for the BT Premiership side Ayr RFC in 2012.[1][4] Ayr was to win the RBS league title and RBS Scottish Cup and RBS Team of the Season in 2012-2013.[5]
He moved back to Zimbabwe in 2014 and once again played for Harare Sports Club.[1]
During the 2013-14 season he was part of the back-up squad for Glasgow Warriors.[6] He played in their pre-season friendly match against Aberdeen GSFP.[7] He was named as part of Glasgow Warriors 38 man Heineken Cup squad in that season.[1]
On the 18 June 2015 it was announced that Mutamangira would be training with the South African Super Rugby side, the Durban Sharks[8] ahead of the Currie Cup.[3] He was scheduled to play for the Sharks against Xerox Golden Lions but was sidelined with a strained knee.[9]
He won the Africa Cup with Zimbabwe in 2014.[1][10]
The prop was named captain of the Zimbabwe national team on 7 June 2015.[10]