Nsereko holds a Bachelor of Laws, a postgraduate Diploma in Legal Practice, and a Masters in Public Health Leadership (MPHL). He is a fellow under Advocacy capacity enhancement. He is a lawyer with an interest in human rights, particularly the right to health, and is a coordinator of the Health and Law Cluster of the Uganda Law Society.

Mr. Nsereko has been involved in litigation, research, documentation, and advocacy on reproductive health, access to medicines, access to educational materials, and intellectual property.