The 36-year former CAPS United who hold a journalism degree from Wits University assumed duty on Thursday.
Twine Phiri, the CAPS United president said he was excited that Bunjira had joined the Green Machine.
Bunjira had initially hinted in January this year that he was returning to Zimbabwe to join any local club and could possibly play in the 2011 season.
Bunjira becomes the second high profile Zimbabwe international after Peter Ndlovu to join the Premier Soccer League. Ndlovu who was capped 100 times for the Zimbabwe Warriors stunned the football when he made a comeback from retirement and joined Division One side Highfield United. He was then loaned to premiership Black Mambas.
Bunjira started his career at the defunct Darryn Textiles in 1991 and later moved to play for Blackpool and Caps United. He moved to South Africa in 1999 and joined Qwaqwa Stars. He also played for Wits University in 2002 – 2004 while pursuing a journalism qualification.