After completing his training as a primary school teacher, Biedermann began conducting theatre projects with children, teens and school classes as well as offering continuing education training for teachers in the area of school theatre/ theatre education in 1979. From 1992 onwards, he worked to steadily develop the children `s and youth theatre department at Theater am Kirchplatz Schaan, now known as TAK Theater Liechtenstein, where he currently serves as director. Its programme consists of international guest performances, in-house and co-productions, festivals, writing and film workshops, outreach initiatives and cultural education offers. He is president of ASSITEJ Liechtenstein and coordinates the project MUS-E in Liechtenstein, which was founded by Yehudi Menuhin in 1993 and takes place in more than a dozen countries. He has been a member of several juries in addition to serving as an international observer at festivals and conferences. In 1996, he was awarded the presenter `s prize by astej Switzerland and in 2011 by ASSITEJ Germany; in 2012, ASSITEJ Austria honoured him with its special award STELLA12 for a symposium on the performing arts and education.