Glenville-Jeffrey E. Cieszynski, 56, passed away after a short illness on Friday, February 4, 2022. Born in Schenectady, NY, he was the son of the late Walter E. Cieszynski and Colleen M. Garry. He was happily married to Kathy Aragona Cieszynski for 26 years. Jeff graduated from Mohonasen High School before joining the United States Navy where he served his country honorably for four years. He would then go on to attend Union College where he received a Bachelor’s Degree in Electrical Engineering. Jeff started his career in Massachusetts working for Digital Equipment company. Then after 10 years with Toshiba, he moved back to the Schenectady area where he was employed by Cadence Design Systems for the last 17 years. Jeff was the CubMaster of Pack 67, the assistant scout master of Troop 67, the Schenectady Youth Hockey President and a member of several other groups in the local community. He cherished his family and friends above anything else and loved being a part of their lives. He is survived by his wife Kathy, his children; Jeffrey Jr., Nathan, and Rosa, his brother Shane (Marsha) Boyle, his sister Monica (Charley) Adams, several nieces, nephews, many close friends, and his large extended family. He is predeceased by his parents Walter (Martha) Cieszynski, Colleen (Mike) LaMalfa, his step father Tom Boyle, his sister Chris Calderon, and his step sister Susie LaMalfa. Calling hours will be held on Thursday, February 10, 2022 from 4pm to 7pm at the DeMarco-Stone Funeral Home, 1605 Helderberg Ave. Schenectady, NY 12306. A funeral service will be held on Friday, February 11, 2022 at 10am at the funeral home. Jeff will be laid to rest at Schenectady Memorial Park in Rotterdam. Memorial contributions may be made in Jeff’s name to a charity of your choice.