[1][2] Talia trained in theology and was employed by the Ekalesia Kelisiano Tuvalu (EKT) as a climate change officer from 2011 until June 2017.
[3] He coordinated the preparation of the EKT statement “Dancing with God in the rainbow” that discusses social issues experienced by Tuvaluans.
His doctoral thesis was titled “(tu)akoi (neighbour) and climate change from three trajectories, indigenous wisdom, biblical and geopolitics.”[4][5] From 2011, he has been the secretary of the Tuvalu Climate Action Network (TuCAN),[5] also in 2011 he was appointed the National Focal point in Tuvalu for the Pacific Indigenous Network (PIN).
[3][5] He was a member of the Tuvalu Government delegation to COP 18 in Doha, COP21 in Paris, and COP23 in Bonn.
[6][7] Talia was appointed the Minister for Home Affairs, Climate Change, and Environment in the Teo Ministry.