Seini is of Tongan descent and has a strong background and passion for strengthening evaluation by, with, and for Pacific communities in New Zealand, and in the Pacific region. Seini is currently the Director of Performance and Evaluation for Pasifika Futures, the Whanau Ora Commissioning Agency for Pacific families. Seini is also the Convenor of the Pasifika Fono Special Interest Group under ANZEA.