From 2003 to 2011, Viliamu Tahega won 38 medals in the 75 kg+ weight class across 13 international weightlifting competitions, giving her the recognition of having won the most medals of any Niuean athlete in international competition.

[7] In 2018, Viliamu Tahega was elected the president of the Niue Weightlifting Federation[8] and was reappointed to the position in 2020.

[5] In 2021, Viliamu Tahega was elected to the Alofi South Village Council.

[11] She also served in the Regional Assistance Mission to Solomon Islands (RAMSI).

Viliamu Tahega's mother, Joan Sisiati Tahafa-Viliamu, served in the Niue Assembly as a common roll member from 2011 to 2014.