She is on secondment for one year. Sarah Esptein is replacing Schlotterbeck as head of media in the UK team.
These changes come in the run up to the 20th anniversary of the United Nations Convention on the Rights of the Child, in November.
Epstein has been promoted from her role as senior media officer. She will lead the team with a greater focus on children's rights during 2009 and 2010. This will include working on a year-end campaign to mark the landmark UNCRC anniversary.
Elizabeth Jones also joins the media relations team as media officer for fundraising, having previously work at NSPCC. Gemma Parkin has also been brought on board as assistant media officer for fundraising, having worked previously at Comic Relief.