Peneza was born in about 1989.[3]
She came to the public's notice when she appeared on a TV programme. The program was called Maisha Plus and she competed with others demonstrating life skills. She was third.[4]
She became a member of Tanzania's eleventh parliament[4] in 2015 and served until 2020 representing the Chadema party.[5]
She then served as treasurer for her party in Victoria.[5]
Peneza was chosen by the Ellen Johnson Sirleaf Presidential Center for Women and Development for their inaugural fifteen women to receive their fellowship.[6]
She chaired the Tanzania Youth Parliamentarians Forum.[3]
In January 2024 she changed political parties to join the ruling party Chama Cha Mapinduzi (CCM). CCM Secretary General, Ambassador Emmanuel Nchimbi announced her new allegiance in Dodoma.[5]
She was a candidate for election in 2025.[2] Her previous party has been declared illegal after it called for electoral reform. Doubts have been raised about the state of democracy in the country.[7] In August 2025 she was competing in the primaries with MP Constantine Kanyasu for the Geita Urban seat.[8]
Peneza has defended the abilities of women in politics including the country's president. She notes that she has to frequently remind her audiences that she is a woman and a leader.[9]
