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The Board of Directors of WorldBoston is pleased to announce the appointment of Joe Haynes as Chief Executive Officer and Sarah Sibley as President & COO, effective November 2025.

Together, Haynes and Sibley will lead the organization into its next chapter, combining deep institutional knowledge with a shared vision for innovation, expanded partnerships, and broader community impact. Their appointments mark an exciting evolution in WorldBoston’s leadership structure—reflecting both continuity with its proud legacy and a bold commitment to growth and collaboration.

Founded in 1949, WorldBoston is one of the oldest World Affairs Councils and a national leader in citizen diplomacy, connecting Greater Boston with global thought leaders, international visitors, and critical conversations about the world’s most pressing challenges. Under the new dual executive model, Haynes and Sibley will work in close partnership to strengthen the organization’s foundation and extend its reach.

The WorldBoston Board is extremely pleased to have secured two outstanding leaders—both with a long-standing commitment to the organization and its mission. Joe Haynes previously served as CEO for a Boston based internationally focused consulting firm and served on the WorldBoston Board of Directors beginning in 2015. Sarah Sibley has served for over a decade as the in-house Vice President for Citizen Diplomacy. The two leaders bring unrivaled institutional knowledge, complementary experience, passion, and proven collaboration. Over their years of close collaboration, they have demonstrated the strong working relationship and shared vision needed to jointly advance WorldBoston’s mission in the years ahead.

“WorldBoston has a remarkable legacy of connecting the world to Boston and Boston to the world, built under the 11-year tenure of outgoing President & CEO Mary Yntema,” said James De Vellis, Chair of the Board. “Joe and Sarah bring complementary strengths that will help us deepen our local impact while expanding our international engagement. Their collaborative leadership model reflects the spirit of partnership that defines our mission.”

As CEO, Joe Haynes will focus on organizational strategy, external relations, and development. As President, Sarah Sibley will oversee programming, partnerships, and operations. The shared leadership approach is designed to leverage both executives’ expertise while fostering an agile, inclusive, and forward-looking culture.

“We’re honored to build on WorldBoston’s proud tradition while opening new pathways for engagement and collaboration,” said Joe Haynes. “Our goal is to strengthen the bridge between Boston and the world—expanding its reach and making it more dynamic than ever.”

“This is an organization rooted in purpose and people,” added Sarah Sibley. “Together with our dedicated staff, board, and partners, we look forward to deepening our impact, growing our community, and ensuring WorldBoston remains a vital forum for global engagement and dialogue.”

WorldBoston’s leadership transition comes at a pivotal time for the organization, as it seeks to expand partnerships across business, academic, and civic sectors while enhancing its role as Greater Boston’s hub for international engagement.

“The Board could not be more confident in this leadership team,” said De Vellis. “Joe and Sarah are locally rooted and globally minded. Together they embody the best of WorldBoston’s history and its future.”

Mission & Values

The mission of World Boston is to foster engagement in international affairs and cooperation with peoples of all nations.

Independence

We respect our speakers and program participants: We do not advocate for policies or positions.

Openness

We embrace new information, perspectives, and connections between people.

Hospitality

We actively welcome international visitors to our community and participants to our programs.

Excellence

We strive for quality and professionalism in our programs and workplace.

Diplomacy

We promote professional and citizen diplomacy.

We acknowledge that Boston is situated on the traditional homelands of the Massachusett People. We also acknowledge their relatives and neighbors, the Nipmuc and Wampanoag Peoples.

WorldBoston is an independent, nonpartisan, nonprofit organization with tax-exempt status under Internal Revenue Code section 501(c)(3).

We are proud members of GlobalTies and World Affairs Council of America

Our Team

Mary Yntema

Temporarily serving in the honorary role of President Emerita until January 31, 2026
Contact Mary

Our Board

James De Vellis

Chair

Tom Ebling

Treasurer

Matthew Findlay

Secretary

Maureen Bennett

Kady Bruce

Gretchen Cook-Anderson

Jonathan Dorfman

Jim Kaufman

Gaetan Kashala

Ann LaFrance

Nathalie Merida

Ryan Morhard

Heather O'Brien

Cristiana Salgado-Braga

Deborah Smith

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Eleanor Deverell

Outreach Associate

Eleanor is a third-year student at Northeastern University, pursuing a Bachelor of Science in Psychology with a minor in Criminal Justice. She is passionate about global engagement and cross-cultural understanding and is excited to be working with, and learning from, the WorldBoston team.

Eleanor began her academic journey studying abroad in London, where she took the opportunity to solo travel across Europe in between her classes. She has also taken part in several work exchange programs around the world, allowing her to immerse in new cultures, build meaningful relationships, and contribute to local community.  

Elena Castellini

Citizen Diplomacy Associate

Elena is a recent double Northeastern graduate, holding a Dual BA in Political Science & International Affairs, and a MA in Political Science.


During her Master's degree, she did her Co-op at WorldBoston on the Citizen Diplomacy team and particularly enjoyed connecting with many international visitors, as an international citizen from Monaco herself. She returned to WorldBoston in July 2024 after graduating, as the Citizen Diplomacy Associate.
Outside of work, Elena enjoys teaching yoga and boxing classes, reading books from all genres, and biking around Boston all year-long.

Heather Pierce Lee

Operations and finance manager

Heather joined the WorldBoston team in January 2025 as the Finance and Operations Manager.

Recently, Heather has worked as a Finance Manager at a local women-owned technology firm.  She has over 20 years of experience in financial services at companies such as Putnam Investments, BNY Mellon, and MFS Investment Management in roles that spanned from International Client Service to Information Systems.  Heather previously worked as a Program Coordinator for a non-profit that installed solar powered computer labs in primary schools in Tanzania and Kenya. 

Heather has volunteered for her local public school and youth soccer. In her spare time, she likes to knit, read, and play board games with her family.

Heather holds a B.A. from Boston University in Political Science and an M.B.A. from Boston University.  She speaks French and is learning Portuguese and Spanish. 

Justin Dynia

Manager of Custom Visitor Programs

Justin has been the Manager of Citizen Diplomacy Programs since January 2025, managing WorldBoston’s Custom Visitor Programs portfolio. Justin has been associated with WorldBoston since May 2024, working on implementing the International Visitor Leadership Program (IVLP) and the Fulbright Visiting Scholars Cultural Enrichment Program.

Justin possesses years of experience in political communications, nonprofit management, and community engagement. His graduate studies focused on improving the State Department’s humanitarian response to migration with Mexico, which included meetings with American and Mexican government officials in December 2023. He served as an Advocacy Associate for Boston Climate Action Network, promoting climate justice policies and co-hosting sustainability events. Additionally, he served as the Communications Director for Massachusetts State Representative Kevin G. Honan, focusing on political communications and legislative research.


Justin holds a B.A. from Boston University in Political Science and Spanish and an M.A. from the Frederick S. Pardee School of Global Studies - Boston University in Latin American Studies. He is fluent in Spanish and Portuguese.

Harrison Zeiberg

Director of Global Engagement Programs and Operations

Harrison joined the WorldBoston team in February 2024 as the Community Engagement Manager. He was promoted to the role of Manager of Global Engagement Programs and Operations in May 2024, and became Director of Global Engagement Programs and Operations in June of 2025

Previously Harrison served as the Field Director for a local political campaign in his home city of Malden, and prior to that he served as an SCI AmeriCorps Member at the Network for Social Justice. As an SCI AmeriCorps Member, Harrison was involved in running a High School internship program along with the planning and execution of 20 community events.
 
Harrison holds a B.A. in History and Political Science from Wheaton College (MA) and is a member of the Phi Beta Kappa and Pi Sigma Alpha academic honor societies. In his free time he likes to creatively write and is an avid reader.

Gene Fullam

Interim Operations Manager

Gene comes to WorldBoston (WB) through Empower Success Corps (ESC), a Boston based nonprofit, where he is a Fellow within ESC's Fellowship program. As a Fellow, Gene works closely with mission-driven organizations to achieve strategic financial, operational and fundraising outcomes. 

 
As WB's interim Operations Manager, Gene brings to WB a multi-disciplinary background with significant financial, operational, and organizational development skills. His experience spans the private, public and non-profit sectors; and includes roles as a former investment banker for Salomon Bros.(Cititgroup), Lehman Bros., HongKong & Shanghai Bank and Standard & Poor's Corporation (where he began his career). Additionally, Gene's interests include working with vulnerable individuals and communities - initially as a Catholic Big Brother (NYC), a AAU basketball coach (in NYC and counties), and COO for a nonprofit focused on education / workforce development outcomes. Gene also served, by appointment, in the State of Vermont, Agency of Commerce & Economic Development, as Director of its Foreign Direct Investment Center.  
 
Gene earned his undergraduate degree from Boston College and a Master's Certificate (NonProfit Management) from Northeastern University. When not crunching numbers or resolving operational issues, Gene's other passions include gardening, hiking (with his labradors), and reading (history / biographies). 

Sarah Sibley

President & COO

Sarah joined the WorldBoston team in January 2016, overseeing WorldBoston Citizen Diplomacy programs, including the International Visitors Leadership Program, and became President & COO in November of 2025.

Sarah worked and studied in the United Kingdom and Morocco for five years. In London, Sarah spent three years running child protection projects for vulnerable children and their families in Morocco with the Moroccan Children’s Trust (MCT), and also working in management and operations with its sister organization, Community Action for Refugees and Asylum Seekers. Sarah then joined the MCT team in southern Morocco as its sole delegate responsible for in-country coordination and development of its child protection and international volunteering projects.

Sarah holds a B.A. from the College of William and Mary in International Relations, and an M.A. from Queen Mary, University of London in International Development. She speaks French and intermediate Standard and Moroccan Arabic.

She also completed a nine-month course in executive nonprofit management and received certification from the Institute for Nonprofit Practice. 

 
 

 

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Joe Haynes

Chief Executive Officer

Joe Haynes combines institutional knowledge, fiscal discipline, and global acumen ideally suited to lead WorldBoston. A nine-year WB director and long-time partner to its IVLP and Global Engagement programs, he understands the organization’s people, systems, and stakeholders—enabling a smooth transition and immediate continuity with staff, funders, and program partners.

Joe previously founded and served as CEO of a Boston-based government-relations and strategic advisory firm with an international focus. He led business development, executed municipal, state, federal and international-facing work, and built enduring client relationships—experience directly relevant to WorldBoston’s growth and revenue diversification agenda.

Substantively, Joe is deeply versed in geopolitics, U.S. foreign policy, and international economic affairs. He has served clients from six continents, designing market-entry and growth strategies for multinationals seeking to access or expand in the United States and advising U.S. companies on overseas expansion, partnerships, and public-affairs execution. His international work includes organizing inbound and outbound delegations and facilitating exchanges in Brazil, Poland, Cuba, and the United Kingdom, among others—experience that maps directly to WorldBoston’s mission.

Embedded in Boston’s corporate, civic, and higher-education ecosystem, Joe is a well- networked convener who converts relationships into sponsorships, partnerships, and visibility. As CEO, he will strengthen and expand partnerships with business, civic, and academic communities, build a broader regional membership base across eastern Massachusetts, increase visibility of WorldBoston’s international visitor programs and global engagement initiatives, elevate Boston’s role as a hub of global dialogue and diplomacy, and grow and diversify revenue streams.

Joe’s proven track record and experience in strategic leadership, partnership development, civic engagement as well as his global mindset position him to lead WorldBoston into its next chapter.

Emma Scapicchio

Programs Associate

Emma is currently a fifth-year student pursuing a Bachelor's degree in International Affairs with a minor in French at Northeastern University. She grew up in the Boston area and calls this city her home, but has also spent a year abroad in London during the 2021-2022 academic year. She previously interned at the Massachusetts State House for the Joint Committee on Environment and Natural Resources under Representative Dan Cahill, and later served as an intern for the Governor's Council under Governor Maura Healey's administration. Most recently, she worked at AIRINC as an International Housing Research Analyst, where she connected with real estate agents across the U.S. and Europe. 
 
Emma is passionate about government and public affairs, and is eager to apply her experience and enthusiasm to this role at WorldBoston.