Our team
Baxter Bullock
Executive Director of Operations
Baxter Bullock is the Co-founder of Students for High-Impact Charity (SHIC) and RC Forward. Prior to Rethink Charity’s founding, Baxter served as the Programs Director for the Charity Science Foundation. He was also a high school math teacher for 4 years.
Tee Barnett
Executive Director of Development
Tee Barnett currently serves as the Executive Director of Development at Rethink Charity and co-founded Students for High-Impact Charity (SHIC). He earned his M.A. in International Development from National Chengchi University (政治大學) in Taipei.
Peter Hurford
Co-founder and Board Member
Peter Hurford is Data Scientist at DataRobot. He co-founded Rethink Charity, and is on the board of Charity Science and Animal Charity Evaluators. He's reviewed and produced research on cause prioritization and effective altruism since 2013. Peter works directly on Rethink Priorities research and strategy. He also works with Rethink Charity on focus projects, in particular the EA Survey.
Tom Ash
Co-founder and Board Member
Tom Ash was the founder and first staff member of Rethink Charity (then called .impact); he created the EA Hub, EA Survey and LEAN among other resources. Since summer 2016 he’s steadily scaled back his work and is now a highly involved board member. He studied Philosophy at Cambridge and Oxford, and since graduating in 2008 has worked for a variety of non-profits including the Centre for Effective Altruism, where he was one of the three initial employees.
Richenda Herzig
Project Lead and Advisor
Richenda is project lead for the EA Hub, a Rethink Charity platform of information and tools designed to enable independent and collective EA projects. Between 2017 and 2018 Richenda was Manager of LEAN, a project for nurturing and supporting EA Groups around the world. Richenda also managed the Rethink Charity tech team and guided tech strategy and infrastructure during this time.
Richenda recently earned her PhD in Sociology, exploring the social dynamics of reputation and rating systems in online communities. She also holds a BA in Social and Political Sciences and an MPhil in Sociology from the University of Cambridge. Things that Richenda love include working with smart people to make the world better, hiking in Vancouver, and dabbling in tech.
Catherine Low
Manager of SHIC
Catherine Low currently teaches Ethics and Physics at a high school in New Zealand. In her youth she was obsessed with finding out the secrets of the universe, and gained a PhD in particle physics from The University of Melbourne. Since then she has been a Science and Physics teacher, aiming to inspire students to improve the world using Science. A founding member of Effective Altruism New Zealand, she has been involved in effective altruism outreach for the last two years, giving presentations to any group who could possibly be convinced to listen, and has worked with Students for High-Impact Charity developing and trialling their educational resources.
Siobhan Brenton
Operations Manager
Siobhan works on systems optimization, organizational compliance and oversees day-to-day operations for SHIC and Rethink Charity. Previously, she helped coordinate EA meetups in Sydney and worked as the communications officer for Effective Altruism Australia. In 2014 Siobhan earned a Bachelors of Science in Biochemistry from Memorial University of Newfoundland and went on to get a Masters of International Public Health from the University of New South Wales.
David Vatousios
Communications Officer
David will be running Giving Games and SHIC workshops in Vancouver secondary schools from early 2018. He is currently responsible for much of the administration for the Local Effective Altruism Network (LEAN). David additionally works as an actor and, before moving to Vancouver from Melbourne, Australia, he spent several months performing in a two-man show for secondary schools about how best to deal with various teenage boys’ issues. David holds a BA in English and Classics from the University of Melbourne.
Crystal To
Tech Officer
Crystal studies Computer Science at the University of British Columbia and has completed two software developer internships. She now works at Rethink Charity filling in the gaps required to get all of the tech projects running smoothly. She can often be found hiding behind a cup of coffee, providing tech support for LEAN websites.
Marcus A. Davis
Senior Researcher for Rethink Priorities
Marcus is a co-founder of Charity Entrepreneurship and Charity Science Health, where he systematically analyzed global poverty interventions, led cost-effectiveness analyses, and oversaw all technical aspects of the project. Before joining the Charity Science team, he ran Effective Altruism Chicago and worked with LEAN coordinating outreach to local EA groups around the globe.
David Moss
Director of Research
David Moss is Director of Research, focusing on measurement and evaluation. He previously worked for Charity Science and has worked on the EA Survey for several years. David studied Philosophy at Cambridge and is an academic researcher of moral psychology.
Jacob Grossbard
Tech Officer
Jacob is studying computer engineering at the University of British Columbia, with the goal of becoming a software engineer. At Rethink Charity, he helps maintain and improve technical resources and infrastructure. He is also an Eagle Scout. When not futzing with servers, he is typically on skis or a bike. He may be responding to your email from the top of a mountain.
Marcin Kowrygo
LEAN Strategy Officer
Marcin graduated valedictorian in Neuroscience and co-founded The Polish Foundation for Effective Altruism where he serves as the Head of Strategy & Talent Management. He utilizes his background and complex problem solving skills in the data-driven movement building.
Holly Morgan
LEAN Communications Officer
Alongside her role as Communications Officer for LEAN, Holly Morgan is the Strategy Director for Effective Altruism London. She has previously worked as Executive Director for The Life You Can Save and Director of Community for Giving What We Can, where she acted as a founding member of the Centre for Effective Altruism.
Michal Trzesimiech
Operations and Technology Officer
Michael's current role is to steer the Local Effective Altruism Network. He also presides over The Polish Foundation for Effective Altruism, which is built upon 3 local groups he started between 2014 and 2017. He is also a technologist with several years of experience at Goldman Sachs, UBS, and others.