Raised in Cala in South Africa, Phumza Maweni began playing netball in primary school using a homemade ball and limited kit. She went on to compete for KZN Kingdom Stars and Western Cape Southern Stings in the Brutal Fruit Netball Premier League in South Africa, and Loughborough Lightning and Severn Stars in the Vitality Netball Superleague in England before joining Sunshine Coast Lightning for the 2019 Suncorp Super Netball season.

Maweni, who stands at 186cm tall, has competed in the international arena as part of the SPAR Proteas and has developed a strong combination with fellow Proteas and Lightning athlete Karla Pretorius.