Siobhán spent 8 years working as a Montessori teacher in a school catering for children aged 2 ½  -9 years. In 2008 Siobhan began lecturing part time at Saint Nicholas Montessori College and in 2011 was appointed year head for stage 2 on a full-time basis. In 2016 Siobhán was appointed Programme Director of the level 7 B.A in Montessori Education. In 2019 the following successful validation, Saint Nicholas Montessori College launched its new B.Ed Montessori Programme and Siobhán was appointed Programme Director of this new programme. Siobhán lecturers in all areas of Montessori education from birth- 12 years as well as Professional practice, Montessori placement, creativity, and ICT in the Early years.

Siobhán has a particular interest in technology and its impact on the lives of young children and is currently exploring the use of ICT in Montessori settings and looking at appropriate materials for early years environments.