Our Team
Joshua Mandelbaum I Executive Director
Joshua is committed to using his decades of nonprofit experience to strengthen and grow the work of St George’s Society of New York.
As Executive Director of Words without Borders, an organization dedicated to advancing cross-cultural understanding through the promotion of international literature, he turned a volunteer-run literary magazine into an international destination for literature in translation with a burgeoning education program. As Executive Director of 826NYC, youth writing organization, he helped a Brooklyn youth writing nonprofit double its capacity and expand to all five boroughs of New York City.
In his free time, he is working toward a master’s degree in psychoanalysis, and lives with his wife and son in Brooklyn.
Jessica Sims | Development & Membership Manager
Jessica leads on SGSNY’s programmatic and fundraising initiatives. She is also the point of contact for our members and volunteers. She holds a PhD in Continental Philosophy from Stony Brook University and brings more than 10 years of academic teaching and administrative experience to the team. While her esoteric knowledge of European thinkers isn’t always appreciated in the real world, it sure does come in handy at networking events and pub quizzes.
Jessica received a $20,000 scholarship from the American Association of University Women (AAUW) in 2016 for her contributions to female scholarship in the US. She lives in Queens with her husband and spends her free time practicing yoga and meditation in Astoria.
Alex Dalrymple | Senior Events & Communications Manager
Alex oversees communications and events for St. George's Society. After spending nearly a decade working with female entrepreneurs, non-profit organizations, and government agencies whose missions she strongly stands behind, she is thrilled to be working with such an impressive team at SGSNY devoted to critical causes.
Having launched her communications career with the NYC Department of Education, the largest school district in the nation with 1.1 million students, she became well-versed in the power of using captivating narrative to engage the incredibly diverse families of the district. Since then, she has been working as a freelance communications consultant where she has been working with various clients committed to education and/ or equity.
Outside of the office, Alex is a foodie and musical theater enthusiast, heading to nearby Broadway for a show from her leafy suburb whenever she can. An avid international traveler, her favorite adventure of all has been the search for the best playground northern New Jersey has to offer with her young daughter, Charlie, and husband, Joe.
Julie Rosenberg LMSW |Manton Social Worker
Julie has served as a social worker for St. George’s Society of New York since 2012, providing counseling, help with benefits and advocacy for our senior beneficiaries so they can afford to stay safely in their homes.
Prior to this, she worked with seniors facing eviction in housing court and ran an elder abuse program at the District Attorney’s office in Queens. She lives in Brooklyn with her two kids and rescue dog, El Chapo.
Mary Lamasney LMSW | Social Worker
Mary has been SGSNY since 2008, working with our senior beneficiaries through our Beneficiary Program. She monitors their safety in the community, providing emotional support as well as assistance with benefits and entitlements. Mary is from the Bronx and lives with her husband in Washington Heights. She has two children–Josh who lives in Toronto and Laura who works as a social worker for the Saint Andrew’s Society.
Mary was named to Crain’s New York Business Notables in Nonprofits and Philanthropy in April 2021.
Katie Smyth | Events & Communications Coordinator
Katie graduated from Newcastle University with a degree in History, post-University she went on to work as President of her Students' Union for a year and then went on to a boutique PR and consultancy company where she spent two years.
Following on from an 18 month stint around Central and South America, Katie's excited to get to know New York "like a local." Mostly, trying the city's delicacies (bagels, pizza slices and cheesecake) and of course, getting across to Broadway!
Patrick Mell | Program and Membership Coordinator
Patrick recently completed his studies at University College Dublin, where he achieved a degree in Politics, International Relations, and Economics. He has moved to New York from Dublin Ireland as part of a year long placement with the Mountbatten Program - a program designed to help young people develop their skills, opportunities, and networks while allowing them to experience life in a new setting.
Patrick was a scout leader for the past 5 years and has held events and successfully planned overseas summer camps from Ireland for children aged 12-17 years old. During this time he also took on the role of Group Leader for the troop. At the age of seventeen, Patrick traveled to Ghana and taught English to school children. This experience has guided him into a career working with non-profit organizations.