Call for Code

Bill Clinton

Founder and Board Chair, Clinton Foundation and 42nd President of the United States

William Jefferson Clinton, the first Democratic president in six decades to be elected twice, led the U.S. to the longest economic expansion in American history, including the creation of more than 22 million jobs.

After leaving the White House, President Clinton established the William J. Clinton Foundation, and today, the renamed Bill, Hillary & Chelsea Clinton Foundation, works to create economic opportunity, improve public health, and inspire civic engagement and service.

Within these three programmatic areas, the Foundation’s work ranges from helping farmers in Africa increase their yields and incomes to mobilizing relief efforts in the wake of natural and man-made disasters; from confronting public health crises such as the opioid epidemic, heart disease, diabetes, and childhood obesity to combating the effects of climate change in the Caribbean through clean and renewable energy efforts. In addition, the Foundation is committed to cultivating a diverse, new generation of leaders. This includes programs that help students create change on their college campuses; support networks that foster women’s leadership in the renewable energy and artisan sectors; and a historic partnership among the presidential centers of Presidents Clinton, George W. Bush, George H.W. Bush, and Lyndon B. Johnson.

Mami Mizutori

Special Representative of the UN Secretary-General (SRSG) for Disaster Risk Reduction

Mami Mizutori is the Special Representative of the United Nations Secretary-General (SRSG) for Disaster Risk Reduction, and head of the United Nations Office for Disaster Risk Reduction, based in Geneva, Switzerland. She assumed her role on 1 March 2018.

The role of the UN Office for Disaster Risk Reduction is to support countries and stakeholders in the implementation of the Sendai Framework for Disaster Risk Reduction (2015-2030). The Special Representative ensures the strategic and operational coherence between disaster risk reduction, climate change and sustainable development agendas as well as the linkage with the UN Secretary-General’s prevention agenda and with humanitarian action. Ms. Mizutori served for twenty-seven years in various capacities in the Japanese Ministry of Foreign Affairs. Prior to joining the UN, Ms. Mizutori was Executive Director of the Sainsbury Institute for the Study of Japanese Arts and Cultures, University of East Anglia, UK, since 2011. Ms. Mizutori graduated in law from Hitotsubashi University, Tokyo and obtained a Diploma in International Studies from the Diplomatic School of Spain.

A Japanese national, Ms. Mizutori speaks Japanese, English and Spanish.

Stewart Butterfield

CEO and co-founder of Slack

Stewart Butterfield is the CEO and co-founder of Slack. Over the past 20 years, he has had a distinguished career as an entrepreneur, designer, and technologist.

In 2014, Stewart helped found Slack, a new category of software that changed the way we work by bringing together people, applications, and data to help teams do their best work. Since then, over 600,000 organizations in over 150 countries have turned to Slack to increase their organizational agility–making it the place to communicate, collaborate, and get work done.

In 2003, he pioneered a new way of sharing information on the Internet when he co-founded Flickr and built the company as CEO into one of the largest web services in the world.

He was named as one of the 100 Most Influential People in the World by Time Magazine, and one of the Top 50 Leaders by BusinessWeek among many similar honors, such as Vanity Fair’s New Establishment List, the Recode 100, Advertising Age’s Creativity 50, and the Technology Innovator of the Year by the Wall Street Journal.

Stewart has a Bachelor of Arts (Hons) in Philosophy from the University of Victoria and an MPhil in Philosophy from the University of Cambridge. He retains academic interests in cognitive science, economics, organizational psychology, and the history and philosophy of science.

Kate Gilmore

United Nations Deputy High Commissioner for Human Rights

Kate Gilmore was appointed United Nations Deputy High Commissioner for Human Rights on 1st December 2015.
She brings to the position diverse and longstanding experience in strategic leadership and human rights advocacy with the United Nations, government and non-government organizations.

Prior to joining OHCHR, Ms. Gilmore was Assistant Secretary General and Deputy Executive Director for Programmes with the United Nations Population Fund (UNFPA). Previously she was National Director of Amnesty International Australia and then Executive Deputy Secretary General of Amnesty International.

Ms. Gilmore started her career as a social worker and government policy officer in Australia. She helped establish Australia’s first Centre Against Sexual Assault at Melbourne’s Royal Women’s Hospital and her work over a number of years focused on prevention of violence against women. In Australia, she was granted honorary appointments to provincial and national public policy and law reform processes, including membership of the country’s first National Committee on Violence Against Women.

Ms. Gilmore holds a Bachelor of Arts degree from the University of New England and postgraduate degrees in Social Work from the University of Melbourne and Community Development from RMIT.

Jim Zemlin

Executive Director, The Linux Foundation

Jim Zemlin’s career spans three of the largest technology trends to rise over the last decade: mobile computing, cloud computing, and open source software. Today, as executive director of The Linux Foundation, he uses this experience to accelerate innovation in technology through the use of open source and Linux.

At The Linux Foundation, Jim works with the world’s largest technology companies, including IBM, Intel, Google, Samsung, Qualcomm, and others to help define the future of computing on the server, in the cloud, and on a variety of mobile computing devices. His work at the vendor-neutral Linux Foundation gives him a unique and aggregate perspective on the global technology industry.

Jim has been recognized for his insights on the changing economics of the technology industry, and he is a regular keynote speaker at industry events. He advises a variety of startups, including Splashtop, and sits on the boards of the Global Economic Symposium, Open Source For America, and Chinese Open Source Promotion Union.

Dr. Elizabeth Hausler

Founder and CEO of Build Change

Dr. Elizabeth Hausler is the Founder and CEO of Build Change and a global expert on resilient building and post-disaster reconstruction. Elizabeth’s strategic direction and leadership have grown Build Change from a few employees in 2004 to over 230 strong working on three continents in 2019. Her emphasis on rebuilding to withstand future disasters has profoundly influenced global development policy by making resilience a major consideration for reconstruction efforts. Her training as a bricklayer and extensive field experience in the developing world, including a Fulbright Fellowship in India, led Elizabeth to found Build Change in 2004 to ensure reconstruction efforts would be safe and sustainable.

Elizabeth is recipient of many honors, including the 2011 US Social Entrepreneur of the Year by the Schwab Foundation and, with Build Change, a 2017 Skoll Award for Social Entrepreneurship. In 2018, she received the University of California, Berkeley’s Campanile Excellence in Achievement Award, and in 2019, delivered the keynote at the UC-Berkeley College of Engineering graduate commencement ceremony. Since 2014 she has been a member of the UC-Berkeley Civil and Environmental Engineering Department’s Academy of Distinguished Alumni. She holds a Ph.D. from UC-Berkeley in Civil Engineering, as well as an M.S. degree from the University of Colorado and a B.S. from the University of Illinois. She has lectured on disaster resistant construction in venues around the world and she and Build Change’s work have been featured in some of the world’s leading media outlets, including The New York Times, BBC News, Elle Magazine, ABC News and Bloomberg Businessweek. She has written or co-authored technical resources and advocacy blogs and has served on the World Economic Forum (WEF) Global Agenda Council on Risk and Resilience.

Michelle Nunn

President and CEO of CARE USA

Since July 2015, Michelle Nunn has been president and CEO of CARE USA, a leading humanitarian organization that fights global poverty and provides lifesaving assistance in emergencies. Last year, CARE worked in 93 countries and directly reached 63 million people in FY2017.

Nunn took the helm of CARE in 2015 and has spearheaded an ambitious strategy to reach 200 million of the world’s most vulnerable people by 2020. Under Nunn’s leadership, CARE has invested in innovative new programs and partnerships with private corporations and other nonprofits to increase its impact. Since assuming leadership of CARE, Nunn has set a goal of increasing CARE’s micro-savings program from 7 million participants to 60 million participants by 2028.

Before joining CARE, Nunn had built an illustrious career of civic and public service as a social entrepreneur, a nonprofit CEO, and a candidate for the U.S. Senate. She co-founded the volunteer-mobilization organization Hands On Atlanta, and expanded it from a single entity to a national network of more than 50 affiliates. Nunn oversaw that group’s merger with Points of Light, creating the world’s largest organization dedicated to volunteer service, with affiliates across the globe engaging more than 70,000 corporations and nonprofit organizations. Nunn served as Points of Light CEO from 2007 to 2013.

A Phi Beta Kappa graduate of the University of Virginia, Nunn majored in history with a minor in religion and earned her Master’s Degree in Public Administration from the Kennedy School of Government at Harvard University. She also received a Kellogg Fellowship to study faith and social justice in more than a dozen countries, from Peru to Namibia to Jordan.

Nunn currently lives in Atlanta with her husband, Ron Martin, and their two children, Vinson and Elizabeth.

Trevor Riggen

Senior Vice President, Disaster Cycle Services

Trevor Riggen was appointed Senior Vice President, Disaster Cycle Services, American Red Cross on January 2, 2019. In this role, Trevor leads a team of Red Cross staff and volunteer experts in disaster preparedness, response, and recovery who develop and implement programs and conduct operations aimed at preventing and alleviating human suffering in the face of emergencies within the United States and its territories.

Prior to this, Trevor served as Chief Executive Officer of the Northern California Coastal Region where he provided management oversight of Red Cross services and supported a team of more than 7,000 volunteers and employees who responded to more than 800 local disasters each year and served more than eight million residents with lifesaving programs.

Prior to coming to Red Cross, Trevor held several leadership positions with community-based organizations in Illinois and the Washington, DC metro area. These positions focused on literacy, crime prevention, poverty reduction, education and emergency planning for public school districts. He also served in the Peace Corps in Morocco where he developed local agricultural cooperatives.

Trevor earned his B.S. in Political Science from the University of Illinois and a Master’s Degree in Public Policy from Georgetown University.

Steve Ewell

Executive Director, Consumer Technology Association Foundation

Steve Ewell is the executive director of the Consumer Technology Association (CTA) Foundation, a charitable foundation with the mission of linking seniors and people with disabilities with technology that enhance their lives.

Prior to joining the CTA Foundation, he was managing director of the InfraGard National Members Alliance (INMA), a public private partnership with the FBI focused on promoting and developing critical infrastructure protection.

Steve holds a Bachelor of Arts from Drew University, and earned his MBA and Masters in Information and Telecommunications Systems from Johns Hopkins University’s Carey Business School. He serves on the Board of Directors of Grantmakers in Aging. In 2014, he was selected by Dealerscope Magazine as one of the Top 40 under 40. He lives with his wife, Kelly, in Leesburg, VA.