Job Title & Company Information: 

2013 – Present: Bloomsbury Children’s Books, Senior Editor

2006 – 2013: Walker Books for Young Readers,  Editor

More Information:
Twitter: https://twitter.com/mkcastellani 

LinkedIn: https://www.linkedin.com/pub/mary-kate-castellani/9/91/9b7 

2009: http://kathytemean.wordpress.com/2009/11/02/getting-to-know-marykate-castellani-walker-bfyr/