Sunday is Founder and Executive Director of Vision for Humanity, a nonprofit transforming the lives of underserved and marginalized groups in Uganda through community-led initiatives. For example, the organization supports South Sudanese refugees in building a peaceful coexistence with Ugandan host communities. Sunday also founded a nursing school to develop service-oriented health workers and Dream Mixed Farms, an enterprise supporting Ugandan and eastern Congolese farmers in agribusiness and organic agriculture. Sunday holds a nursing degree from Makerere University and a postgraduate diploma in International Primary Health Care from the University of London.