Posenai’s career spans more than 40 years, beginning as a band leader before becoming a key figure in Pacific music, theatre, events and production.
In 1995, two years into Pacific Underground’s groundbreaking theatre productions and tours, he founded PU Music Production, known as P.U.M.P.
Through P.U.M.P, he led sound design for theatre productions, shows and concerts alongside Tanya Muagututi’a and Chris Searle, and was lead producer for Pacific Underground’s two albums, Landmark and Island Summer.
Pacific Underground is Aotearoa New Zealand’s longest-running Pacific performing arts collective. Since 1999, Mavaega and his wife Tanya Muagututi’a have led the collective, expanding its work into event production while continuing to nurture emerging Pacific talent in the performing arts.
Posenai has contributed to Pacific Underground theatre productions such as Sons, Romeo and Tusi, Dawn Raids and Angels, as well as P.U.M.P projects including Soul Defined, Island Summer, Drum Five and Drum and Bass.
His event and production work includes AFFIRM, Kia Mau Festival, Otago Polyfest, the Festival of Pacific Arts in 2004, 2008 and 2012, and FESTPAC 2024 in Hawai‘i. He has also contributed to film projects including Tinā, as a musician, and My Name is Pati, as part of the advisory committee.
As a musician he has toured with King Kapisi to Glastonbury 2011 and Che Fu to Australia 2012, with LA Mitchell supporting Stevie Wonder in NZ and with Pacific Underground to Palau, American Samoa, Solomon Islands, New Caledonia and Hawaii to represent at the Festival of Pacific Arts and Culture.
Posenai has appeared as a guest musician in recordings and performances with artists including Che Fu, King Kapisi, Ladi6, Scribe, Mara TK, Dallas Tamaira and Fat Freddy’s Drop. He has built extensive technical and production expertise through events and concerts including Pacific Underground’s Pacific Arts Festival, Auckland’s Pasifika, Diwali, Lantern and Matariki festivals, and winery tours with artists including Sol3 Mio, Shihad, Stan Walker and Bic Runga.
In 2021, Posenai and Tanya were made Members of the New Zealand Order of Merit for services to Pacific performing arts. Pacific Underground received the Lifetime Achievement Award at the Pacific Music Awards in 2016, and Posenai received the Production Technical Professional FAME Award in 2024.
He has also been Advocating for Pacific music and Artists at WOMEX Poland, Santiago De Compostella, Grand Canaria and Acarunia Spain since 2018.
Locally in Ōtautahi Christchurch, he continues to support young Pacific peoples in the arts through mentoring, including Pacific Underground’s Ako Mentoring Programme.
In 2025, to celebrate more than 30 years of Pacific Underground, Posenai and Tanya led a collaboration with the Christchurch Symphony Orchestra. The show, Ōtautahi Pasifika Legacy Project, featured music from Pacific Underground composed for orchestra by Seta Timo, with performances by Tusiata Avia, Tamanau II Performing Arts, Mal Lakatani, Hiliako Iaheto and Posenai’s family of musicians: Lijah Mavaega, Talia-Rae Mavaega, Josephine Mavaega and Muagututi’a.
Posenai said he is happy to be home. "Coming back to Christchurch was always on the cards after being shaken out in 2011. I never knew it would take this long to come home but I’m so happy my work journey has aligned me up to be here at the Macmillan Brown Centre 2026
I look forward to creating homegrown work again and to honour our ancestral journeys through the medium of our shared musics."
Macmillan Brown Centre for Pacific Studies Director, Distinguished Professor Steven Ratuva says the 30th anniversary residency is a significant moment for UC, Creative New Zealand and Pacific communities.
“We are honoured to welcome Posenai to our place,” he says. “Music has such importance within Pacific storytelling and cultural connection, and Posenai is testament to what can be achieved with music and other artforms. We look forward to building connections within our centre and with the local Pacific community.”
Posenai will be in residence for three months from May to July 2026.