Dawn Toolan has extensive experience in scientific research and development, currently serving as a Principal Scientist at Merck since November 2006, where previous roles included Associate Principal Scientist, Senior Scientist, and Scientist. Prior to this, Dawn Toolan worked as a Research Associate at RheoGene from 2003 to 2006 and completed an internship as a Research Associate at Rohm and Haas from 2002 to 2003. Dawn Toolan obtained a degree from Cedar Crest College, graduating in 2003.