Daniel and Sarah Jaecks, of Colorado Springs, Colo.; Suzanne Sanderson, of Mercer Island, and Charles Sanderson, of Issaquah, are happy to announce the engagement of their children, Joanna Jaecks and Adam Sanderson.

Ms. Jaecks is a 2001 graduate of Cheyenne Mountain High School. She received a Bachelor of Arts in biology at Western State College in Gunnison, Colo., in 2005 and is currently working on a doctorate in pharmacy at the University of Washington.

Mr. Sanderson is a 1998 graduate of Mercer Island High School and received his Bachelor of Science in computer science from the University of Washington in 2002. He is employed as a software developer for Liquid Planner in Bellevue.

A September 2010 wedding on Mercer Island is being planned.