Sebastian Müller lived in Tanzania for several years and learned Kiswahili through daily use on site and self-study. He deepened his language skills through language studies at the State University of Zanzibar. In Germany, he gained experience in teaching Kiswahili as a tutor at the University of Bayreuth and as a language teacher for Mission EineWelt. He is the author of various Kiswahili teaching materials in order to convey the language in a practical way to those who are interested in learning a new language and to support them in doing so.