Milka is a member of the Sengwer Indigenous Peoples of Cherang’any Hills, Kenya. For about 9 years, she has been working for the recognition of her community’s land rights and other rights accorded to them as a minority and indigenous people. Her interest in gender inclusion has informed her work with the community leadership and women to incorporate gender issues in the land rights struggle. Currently, Milka co-coordinates Policy and Advocacy (defending territories of life) at the ICCA Consortium, an international association of indigenous peoples and local communities' conserved areas. In 2020, she was an Environmental Justice Fellow at Natural Justice, Kenya.

Milka holds a degree in Anthropology with IT from Maseno University and an ongoing masters in Gender and Development at the University of Nairobi.