Carl J. Thomsen II

Carl J. Thomsen II passed away on April 9, 2026, at the age of 67 from Amyotrophic Lateral Sclerosis (ALS). Carl is survived by his wife, Kathleen; children Hunter Thomsen (Donald Mullin) and Brooke Thomsen (JC Flores); sisters Kathy Thomsen (Bob Weber) and Karen Thomsen (Tom Dove); and aunt, Sue Cook (Scott). Carl was born on September 14, 1958, in Alton, Illinois to Carl and Roberta Thomsen. He grew up in Lake Shawnee, New Jersey where he spent his summers swimming and sailing and winters ice skating and ice fishing. He attended Jefferson Township High School where he participated in cross country and track graduating in 1976. Following high school, he went to Georgia Institute of Technology earning a bachelor's degree in mechanical engineering in 1981. He received a Master of Science degree in 1989 with a major in aerospace engineering from Old Dominion University. In 1995 he graduated with a second master's degree in applied mathematics from Georgia Institute of Technology. Carl enjoyed everything engineering and math related. He started his engineering career at Virginia Power in Portsmouth, Virginia; taught math classes at Georgia State University in Atlanta, Georgia; and worked as an engineer for Pratt and Whitney in Jupiter, Florida; Lockheed Martin in West Palm Beach, Florida; and Northrop Grumman in Annapolis, Maryland. He specifically designed control systems for jets and submarines. Carl had numerous interests and hobbies that revolved around nature and the outdoors. He enjoyed running, biking, swimming, hiking, camping, and sailing. He shared his love of camping and boating with his son and daughter. He loved day hikes as well as longer backpacking trips with a beer at the end of the trail. He also loved playing the guitar and being in a band with his college friends. Carl was a lifelong New York Mets and Giants fan and enjoyed going to see both teams play. Carl was skilled at woodworking and crafted various beautiful items for the home. He enjoyed traveling and learning new things like how to grow hops and make his own beer. Carl will be remembered by those who knew and loved him as a kind, patient, generous man who was always interested in the lives of others. He was a devoted father to Brooke and Hunter and a mentor to many of their friends. He was a loving uncle to his three nieces, Martha, Megan, and Mya and made it a point to show up for their special occasions. He enjoyed spending time with his stepdaughters, Kassie and Karly. Over the years he kept in touch with both high school and college friends. He maintained close relationships with former neighbors and colleagues. Carl was a husband, brother, father, uncle, and friend to so many and will be remembered for his immense love and thoughtfulness. A Celebration of Life is scheduled for Saturday, August 29, 2026, in Jupiter, Florida. Details regarding time and place will be sent at a later date. All are welcome to attend and celebrate Carl’s life. Dress will be casual and please wear blue which was Carl’s favorite color. In lieu of flowers, information regarding a scholarship in Carl’s name will be forthcoming.

Carl J. Thomsen II

September 14, 1958 - April 9, 2026