YMCAs require a constant infusion of new leadership to continue their tradition of delivering high-quality community service and developing innovative solutions to local problems. As a YMCA staff member, you can play a key role in changing the lives of kids and families and can help shape our future. YMCAs collectively are the largest not-for-profit community service organization in America. They are at the heart of community life in neighborhoods and towns across the nation and in the Greater St. Louis area. Every year Ys work to meet the health and social service needs of more than 14 million men, women and children.