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Mark Saperstein is an attorney, educator, photographer, and volunteer. He is a graduate of Brown University and Boston University School of Law. In addition to his law career, Mark worked for Senator George J. Mitchell in Washington, D.C. He is a former board member of the SpeakEasy Stage Company in Boston, where he served as Treasurer from 2006—2010. Mark began working with Hyde Square Task Force youth in 2000 and joined the Board of Directors in 2005. He has lived in Jamaica Plain since 1993.

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Stephanie Lin is a senior associate in WilmerHale’s Boston office who focuses her practice on IP litigation matters. She has worked on patent, copyright and trade secrets litigation in federal court, inter partes review proceedings in front of the US Patent and Trademark Office Board and International Trade Commission proceedings. Ms. Lin’s experience also includes an international investigation for a high-profile banking client, contract disputes, arbitration and bankruptcy proceedings. She has been a member of the event committee for HSTF’s Annual Making Change Happen Breakfast since 2017 and joined the Board of Directors in 2019.

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Rob Arrieta is currently a Managing Director of JPMorgan Chase & Co. in Boston where he has responsibility for advising clients in the New England region. He is originally from San Juan, Puerto Rico and spent most of his childhood on the island before moving to the States during college. He currently resides in Newton with his wife, Jeanne, and two children, Augie (7) and Becca (6). Rob is currently involved in a number of philanthropic and volunteer initiatives in the Boston area including serving on the board of directors of the West Suburban YMCA and also participating in several charities such as the Muscular Dystrophy Association and Big Brothers Big Sisters. He holds a BS degree in Civil Engineering from Cornell University, an MS in Civil Engineering from Georgia Tech and an MBA from the MIT Sloan School of Management. Rob is also an avid player and collector of board games as well as an amateur historian.

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Nelson Arroyo is in Store Leadership for Whole Foods Market. He currently serves as a Zoning Commissioner for the Boston Planning & Development Agency, has served as Chair of the Jamaica Plain Neighborhood Council, and was previously Vice President of Hyde Jackson Main Street. Nelson has been a member of the Hyde Square Task Force Board of Directors since 1997.

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Melissa Aybar serves on the Program Task Force and currently works as a School Leadership Fellow at Boston Collegiate Charter School. Formerly, she taught 8th Grade at the Epiphany School in Dorchester. Upon graduation from Amherst College in 2014, Ms. Aybar joined Epiphany as a Teaching Fellow. Two years later, she graduated from the Donovan Scholars Program with a degree in Secondary English at Boston College. From there, she taught 8th grade Reading and Writing before moving into instructional leadership. Melissa is joining the next cohort at Boston College’s Lynch Leadership Academy this year. She is a proud alumnus of Hyde Square Task Force, serving as a youth community organizer for four years and then a college mentor and volunteer. She joined Hyde Square’s board in 2021.

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Jonathan Block is the founder and president of Block Properties LLC, a real estate investment, development, and management company located in Boston, Massachusetts with residential and retail properties located across greater Boston. He currently serves as a trustee of the Richard and Susan Smith Family Foundation. Jonathan holds an AB in computer science from Dartmouth College and an MBA from Harvard Business School. He currently lives in Boston with his wife, three boys, and a St. Bernard.

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Oscar A. Brazoban holds a B.A. in Business Management from UMASS Lowell. Upon graduating from UMASS Lowell, Oscar assumed the role of Environmental Specialist at the Massachusetts Port Authority (Massport). In 2015, he joined Massport’s Internal Audit Department as a Staff Auditor. He served in that role until 2017, when he took on the role of Aviation Security Specialist. He has been the recipient of Massport’s Outstanding Achievement Award. Since high school, Oscar has placed a priority on community involvement and advocacy. Oscar was a Youth Organizer at Hyde Square Task Force from 2006-2009. Throughout his college career, Oscar remained connected to Hyde Square Task Force as a mentor, and in 2012 Hyde Square Task Force presented Oscar with the Emerging Leader award at the first annual Making Change Happen Breakfast. Oscar is a Dominican native who arrived to the U.S. at the age of eight. While he believes that it takes a village to raise a child, he also believes that it’s the child’s duty to pass it forward to the community that gave him so much. He joined Hyde Square Task Force’s Board of Directors in 2018.

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Galicia Escarfullery is the family advocate at ABCD Jamaica Plain Head Start. Galicia initially joined HSTF as a Youth Community Organizer in 2002. After graduating from Another Course to College, a BPS college-preparatory high school, she acted as the HSTF Office Manager until 2010. She was nominated by former Mayor Thomas M. Menino to represent HSTF on the Boston Climate Action Leadership Committee. She earned her associate degree in social science at Roxbury Community College and is pursuing a BA in human services at UMass Boston. 

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Gordon Gottlieb is a human resources consultant at TDC, a nonprofit consulting and training firm in Boston that serves nonprofit clients throughout New England. He has been with TDC since 1996 as a human resource/organizational development consultant and as program director of TDC Training. Previously, he was a member of the board of directors of the Women’s Lunch Place, as well as a guest lecturer at Northeastern University in their Nonprofit Management program. He holds a BA from Tufts University and an MA in management from Lesley University. He has lived in Jamaica Plain since 1987.

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Judi Haber is the Managing Partner and President of MORE Advertising where she manages all public sector and non-profit marketing and advertising as well as managing the operational side of the agency. Ms. Haber graduated from the University of Massachusetts at Amherst with a B.S. Degree in Community Service. She sits on the steering committee of Women for UMass Amherst and has served on several nonprofit boards. Currently, Ms. Haber is a board member at the John M. Barry Boys & Girls Club of Newton where she serves as Chair of their Marketing Committee and held the position of President for two year. She is also the former treasurer of the MA Social Marketing Association.

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Jane Matlaw is the Director of Community Relations at Beth Israel Deaconess Medical Center. She is a member of many boards and community groups, including JVS, and ABCD Parker Hill/Fenway. She is currently a council member of the Jewish Community Relations Council Greater Boston where she served as vice president of the Board and chaired the Public Policy and Haifa Social Justice and Civil Society committees for several years. In addition, Jane is a graduate of Boston University and the BU School of Social Work. She serves as a field instructor of the Boston College School of Social Work.

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Jerry is President and Chief Executive Officer of JVS. He is responsible for the overall direction and management of the organization, and leads its Leadership Team. Prior to joining JVS, Jerry was Vice President of Building Economic Opportunities at Jobs For the Future, a national workforce development and education policy, research, and consulting organization. Jerry founded and was Executive Director of two non-profit organizations: the Greater Boston Manufacturing Partnership and the Coalition For a Better Acre. Jerry also spent ten years in the administration of Boston Mayor Raymond L. Flynn, leading several housing, economic development and workforce development initiatives. Jerry holds a Bachelor’s Degree in Government from Clark University and a Masters in City Planning from the Massachusetts Institute of Technology. He is the author of numerous book chapters, articles, and monographs on housing, economic development and workforce development issues.  In addition to serving on the board of Hyde Square Task Force, Jerry is a member of the Boston Federal Reserve Bank’s Community Development Advisory Council (CDAC) and is also a board member of the Economic Empowerment Trust Fund of the Commonwealth of Massachusetts.

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Anny Sanchez is an Underwriter at Silicon Valley Bank, working on Residential Mortgage Department. Anny was a participant at Hyde Square Task Force, specifically Ritmo en Acción and was a Youth Community Organizer. After graduating college, Anny returned to HSTF for four years as the bookkeeper and program administrative coordinator. Anny holds a B.A. in accounting from Stonehill College. Anny is a longtime public servant. She served for a number of years on the board of Hyde-Jackson Square Main Streets (now Three Squares Main Street) and has volunteered for Hyde Square Task Force in various capacities over the years.

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Franchesca currently works at State Street as an Officer with the North American Asset Owners solution team, as a sales analyst. Franchesca has been with State Street since June 2020. Before that, she received a Bachelor of Science from Bentley University. She has a deep passion for giving back to the community. Franchesca is known for her strong interpersonal skills and her ability to foster positive working relationships. She is a team player who thrives in collaborative environments and is always willing to go the extra mile to ensure the success of her team. Her passion for giving back is heavily affected by her Dominican roots. Franchesca has served as a member of HSTF since 2012, taking part in various roles within the non-profit. Specifically joining the HSTF team at the mere age of 13 as a youth member. She attended Boston Public Schools and grew up in the Southend/Roxbury area. Most recently, Franchesca has been participating as a youth mentor to 12th-grade high school students, aiding in planning for the future. She is looking forward to this new opportunity and is delighted to be a part of the Hyde Square Task Force Board.

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Merilin Stephens (Castillo) is a Hyde Square/Jamaica Plain native. She is currently an Associate in the Litigation and Enforcement Practice Group at Ropes & Gray LLP, focusing primarily on civil litigation and government enforcement actions.  She previously clerked for a federal judge in the District of Massachusetts for a year.  Merilin is a former Youth Community Organizer at Hyde Square Task Force and was also part of the Health Career Ambassador’s Program, where she also held a youth seat on Southern Jamaica Plain Health Center’s Board of Directors.  She holds a Bachelor of Arts in History and Literature with a language citation in French from Harvard College and Juris Doctor from Columbia Law School.  She enjoys mindfulness practice and indoor cycling.  Merilin joined Hyde Square Task Force’s Board of Directors in 2022.

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After more than five years working with youth-serving nonprofits in Boston, Natalia joined Mayor Martin J. Walsh’s administration to help develop and execute the city’s first citywide plan in more than 50 years. As the Executive Director of Imagine Boston 2030, Natalia is tasked with delivering on a plan that engaged more than 15,000 Bostonians. The Imagine Boston 2030 process is unlike any previous plan nationwide, as it focuses beyond land-use and development to include city topics like housing, climate, education, economic mobility and racial equity, and transportation. Additionally, Natalia started the Mayor’s Latinx Employee Resource Group (ERG) and currently serves as the liaison to the Diversity Office for the ERG. The Latinx ERG is comprised of more than 50 Latinx employees from around the city with the mission to build community; to share cultural experiences and learning; to create a safe space to share experiences; to develop opportunities for leadership, professional development and growth; and to increase visibility for Latinxs in government as a tool for recruitment and inclusion. Natalia joined Hyde Square Task Force’s Board of Directors in 2018.

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Eldin is currently the co-founder and Managing Director of The Chavez Group, a Boston-based government relations and strategic communications consulting firm led and managed by leaders of color with expertise in national and local political organizing, strategic and crisis communications, and community engagement.

Eldin grew up in Boston’s Villa Victoria neighborhood, in the South End, and is a graduate of the Boston public schools. Eldin was the strategist and communications director for the winning and historical Boston City Council At-Large campaign of Julia Mejia. He also was the lead consultant on outreach to Black and Latinx communities for Ed Markey’s successful 2020 U.S. Senate re- election campaign, as well as handled campaign’s media production and ad buys, including to local and statewide news publications, multi-lingual radio market, and all Spanish-language media outlets.

Eldin’s work in the public and private sector for over twenty-five years in Massachusetts and New York includes serving as a Deputy Commissioner charged with handling 24/7 public affairs crisis for one of the nation’s largest prison systems, at the NYC Department of Corrections (Rikers Island).

Prior to that, Eldin organized and established public outreach efforts as political director and communications strategist for SEIU locals in Massachusetts and New York. He was also a partner at a Manhattan public relations firm, coordinating strategic communications for such clients like New York City’s Uniformed Firefighters Association, the largest firefighter union in the country, on numerous 9/11 events. He also drew national media attention for major nonprofits and helped turn local start-up projects into star business ventures.

Earlier in his career, Eldin served as a political aide to an NYC County leader and press secretary for NYC Council and City Hall officials. And while at New York City Hall, he helped manage media relations for council committees' hearings that drew major media attention on some of the city’s most heated issues, including the so-called Central Park Five incident. Eldin’s work in New York was noted by Crain’s New York Business.

He cut his teeth in public service when he served as a legislative aide to a former ranking member of the Massachusetts State House leadership. Eldin holds a Juris Doctor degree from St. John’s University School of Law in New York. He has lectured and taught on public policy and communications at various public and private institutions and is a contributing writer to many major news publications.