Swai worked for nine years as a researcher at the Queen Mary University of London. From 2001 to 2014, she was a researcher at the
Council for Scientific and Industrial Research (CSIR) in
South Africa. She heads the Department of Science and Technology / Pan-African Center of Excellence for Research and Training in Applied Nanomedicine. In 2015, she returned to Tanzania She also sits on several other international expert committees, such as
TB Global Alliance, ISHReCA,
UNECA, Erasmus Mundus Nanofar, and the editorial board of the Journal of Nanomedicine. In 2013, Swai was appointed as an extraordinary professor at the
University of Pretoria. In 2019, she became president of the African Materials Research Society (AMRS). == Works ==