He is the acting national coordinator of the Human Rights Consultative Committee (HRCC), a network of 91 local civil society and non-governmental organizations.
His appointment was widely seen as a reward for his role in the nationwide demonstrations which contributed to the sanctioning of fresh presidential elections by Malawi's high court.
Other members of the HRDC were also appointed to various Missions abroad, a move widely seen as an attempt to silence the human rights group.
He also served as the Executive Director of Malawi Network of Religious Leaders Living with HIV/AIDS (MANERELA).
In 2014 Sembereka was replaced as Special Assistant on Non-Governmental Organisations by Mabvuto Bamusi.