since October 2009 Senior Conservation Scientist at the Royal Society for the Protection of Birds, Sandy, UK

2009 Post-doctoral research fellow at the University of Alaska Fairbanks, USA

2005-2008 Graduate research assistant at the University of Alaska Fairbanks, USA

2003 full-time nature warden for Naturschutzbund Deutschland, managing the conservation island Trischen, Germany

2001 - 2002 contract research assistant for the Department of Conservation, Stewart Island, New Zealand

2001 contract breeding bird survey for the Department of Ecology, Lower Saxony, Germany

1999 - 2003 part time bike messenger for 'Die Oldenboten' bike messengers in Oldenburg, Germany