From 2003-2006 she was Ambassador and Director of Multilateral Cooperation in the Department of the Tanzania Ministry of Foreign Affairs and International cooperation.
For three years, 1989-1992, she was a member of the UN/OAU expert Group on the Denuclearization of Africa leading to the Treaty of Pelindaba.

From 1992-1994, Ambassador Mulamula participated in the Rwandese Peace talks in Arusha, Tanzania as part of the Facilitators team; attended UNITAR training workshop on conflict resolution and management, Vienna, Austria, 1996; and was appointed Special Assistant to the Permanent Secretary of the Tanzania Ministry of Foreign Affairs from 1996-1999.

In that capacity she attended bilateral, regional and multilateral meetings, including successive UN General Assembly sessions, SADC and EAC Summits, Great Lakes Region peace initiatives and others.  During the same period she was also a part-time lecturer on the “Art of Negotiations” at the Centre for Foreign Relations, Dar-Es-Salaam.

She holds a Master of Arts (St. John’s University, USA, 1989), Diploma International Law (1989), Bachelor of Arts (Hons), and University of Dar-es-Salaam (1980), Post-Graduate Diploma in International Relations (1983).

During her free time, she enjoys reading books and magazines as well as gardening.
Ambassador Liberata Rutageruka Mulamula is married and a mother of two.