Sindamuka's parents were among the first converts to Anglicanism in his region and he was baptized in 1939.
In 1987 he became Archbishop of the Province of Burundi, Rwanda and Boga-Zaire, until it was separated into its constituent countries in 1992.
[4] He then became the first Archbishop of the newly created Province of the Episcopal Church of Burundi, from 1992 until his retirement in 1998.
His funeral and burial took place in St. Peter's Cathedral, in Matana, the Anglican Diocesan Centre in Bururi Province.
The tributes given at the time of his death demonstrated how widely his faith and integrity were respected by both Burundi nationals and expatriates and by church members and political leaders.