ACTON – Alexander “Alex” Starosielski, 27, of Acton and former longtime resident of West Springfield, passed away peacefully in Brookline, MA on Monday, December 21, 2015. He was born in Northampton on August 22, 1988, the beloved son of Sergei Starosielski and Primela K. (Paul) Starosielski. He was raised in West Springfield and graduated from West Springfield High School. During his years at West Springfield High, Alex was a founding member of the FIRST Robotics Team known as the Mechatronic Maniacs. He also was a nominee to the Boy’s State Leadership Program. Alex received a Bachelor of Science Degree from the University of Massachusetts, Amherst, where he graduated cum laude, and was pursuing his master’s degree at Northeastern University. He was employed as an Electrical Engineer for Raytheon Integrated Defense Systems in Marlborough. Besides his parents, he leaves his spouse, Catherine Ann Starosielski, and his loving family, including his sister, Nicole Starosielski of New York; grandmother, Anastasia Starosielski of Springfield; two uncles, Paul Starosielski and his wife, Darlene, of New York and Kris Paul and his wife, Donna, of Virginia; his three loving aunts, Irene (Starosielski) Heroux of Texas, Marianna Starosielski of Springfield and Jeryl Paul of New Hampshire; and his many dear cousins, friends, and extended members of the Starosielski and Paul families. His Funeral Service will be held on Tuesday morning December 29, 2015 at 10 a.m. at the St. Pierre – Phaneuf Springfield Chapels, (413-737-1177), 7 Chapin Terrace, Springfield, MA 01107. (The funeral home will open at 9 a.m.) His burial will follow the service at Oak Grove Cemetery, 426 Bay Street, Springfield, MA 01109. His family will receive friends at the funeral home on Monday, December 28, 2015 from 4 p.m. to 7 p.m. For more details, please visit: www.stpierrephaneuf.com