Joseph is the youngest of 3 boys and grew up in Zimbabwe. His oldest brother Ben also plays for the Warriors. Joseph grew up with many rugby role models with his father Alex Nicholls playing in two Rugby World Cups, and his brothers both playing in the under 20s World Cup. Joseph came to Utah in 2010 to attend BYU and started on the rugby team as a true freshman. After serving an LDS mission in Ogden and Idaho. Joseph returned to BYU where he met his wife Megan. Joseph played two seasons with the Rugby Utah Selects 7s team and won two club National Championships.