Ellen and Paul Szymanski of Londonderry, NH proudly announce the engagement of their daughter, Stephanie, to Sean Marden, son of Annette and Charles Marden, also of Londonderry. Stephanie and Sean are 2007 graduates of Londonderry High School. Stephanie graduated from the University at Buffalo with a degree in Environmental Engineering. She is currently employed as an Engineer at the NYC Department of Environmental Protection. Sean is a graduate of Case Western Reserve University with a degree in Mathematics. He is currently employed by Bloomberg L.P. as a Software Engineer. The couple currently resides in New York with their cat, Tal. A July, 2013 wedding is planned.