Project Evident Team

Our team’s diverse experience maps to nonprofit leaders’ talent and capacity requirements.

We have backgrounds in philanthropy, technology, policy, analytics, entrepreneurship and nonprofit management. We understand the evidence ecosystem deeply and from every angle.


Tamar Bauer

Entrepreneur In Residence

Tamar is an attorney with expertise in harnessing policy strategies to accelerate programs that improve outcomes for low-income children and families.  She focuses on actionable innovation in public and private sectors, with demonstrated success in driving federal and state policy change. As Chief Policy Officer at Nurse-Family Partnership from 2006-2017, she helped secure $1.5 billion in federal funds to create the Maternal, Infant and Early Childhood Home Visiting Program and mobilized $30 million in public and private funding to expand services for families in South Carolina’s Pay for Success initiative. Prior to NFP, Tamar helped launch the New York Academy of Medicine’s Child Health Forum and advanced policy work at the New York March of Dimes and American Academy of Pediatrics.  

Ben Berres

Senior Advisor, Outcomes Technology

Ben is a systems leader focused on the intersection of technology, analytics, and the social sector. His primary focus is on enhancing the impact of health and human services systems, particularly those that support children, youth, and families. He has extensive experience advising across disciplines and sectors, working with clients to create programs and technology solutions. He has worked previously at Partners for Our Children, Accenture Consulting, and UC Berkeley. He holds an MSW and MPA from the University of Washington.


Jennifer Brooks, PH.D

Senior Impact Advisor

Jennifer Brooks is an independent consultant, providing advice and support to philanthropy, nonprofits, and governments on using evaluation, metrics, and evidence-based practice to strengthen the impact of programs for children and families. Most recently, Dr. Brooks served as Senior Program Officer at the Bill and Melinda Gates Foundation, helping to shape the foundation’s strategic investments in high quality public early learning programs. She received her Ph.D. and M.Sc. in Human Development and Family Studies from Penn State University and a MA in Public Policy from the University of Chicago.


Charles E. Carter, Jr. Ph.D., LICSW

Senior Director, Practice and Learning Solutions

Charles has more than 20 years of experience working with low-income children and families. He approaches this work with equal parts curiosity, humility, passion and humor, aiming to positively impact the systems and organizations that work on behalf of vulnerable populations. Most recently, Charles was Deputy Director and Chief Strategy Officer at the Center on the Developing Child at Harvard University where he led the creation of a learning strategy and built the capacity of individuals, organizations, and systems to drive and scale innovation on the ground. He earned his master’s degree in Social Work from the University of North Carolina at Chapel Hill and his Ph.D. in Social Work from Boston College.


Sarah Di Troia

Senior Advisor, Strategic Operations

Sarah Di Troia is an expert in crafting strategy and operations to drive high growth in nonprofit and for profit organizations. Her experience as an investor, advisor and leader fuels an approach that integrates market insights with the internal change management necessary to realize new opportunities. Sarah is known for teasing order out of the creative chaos of growth and innovation. Prior to joining Project Evident as a Senior Advisor, Sarah was Chief Operating Officer at Health Leads and a Managing Partner at New Profit, Inc.  She earned her MBA from Harvard Business School.


Kelly Fitzsimmons

Founder; Managing Director, Network and Strategy

Kelly is a committed social innovator. Previously she served as Vice President/Chief Program and Strategy Officer at the Edna McConnell Clark Foundation (EMCF) where she lead policy innovation, evaluation, grant-making and the early capital aggregation pilot. Prior to EMCF,  she co-founded Leadwell Partners and New Profit Inc., held senior leadership positions in nonprofit organizations and served on several foundation and social sector boards and advisory committees. 


Lhanzi Giambrone

Program Associate

Lhanzi is an effective problem-solver and intuitive connector.  Prior to joining Project Evident, she worked as a member services associate at the Appalachian Mountain Club.  She also worked as an AmeriCorps VISTA for a teen youth newspaper at the nonprofit organization Write Boston, where she managed teams focused on website redesign and video journalism.  She earned her BA in Media Studies, Journalism and Digital Arts with a minor in Global Studies.


Matt Hillard

Senior Evidence Analyst

Matt speaks the language of program implementors and program evaluators. He is an effective analyst and communicator who has experience assessing and implementing social sector interventions. Prior to joining Project Evident, Matt was an Analyst at Abt Associates where he specialized in analyses and primary data collection of extended learning time interventions in K-12 education. He earned an MPP from the University of Michigan's Ford School of Public Policy and a BA in Economics from Bowdoin College.


Farhana Hossain

Senior Consultant for Data, Evidence and Learning

Farhana brings expertise in qualitative and quantitative research, data visualization, information design, and communications. Previously, she served as a Research Associate for MDRC, where she led implementation research for the evaluations of youth and workforce development programs and developed communications strategies and products to educate public and private stakeholders about evidence-based policies and practices. Prior to MDRC, Farhana was a visual journalist for The Washington Post and The New York Times, where she oversaw the development of graphics, maps, and other types of visual representations to inform politics and policy coverage. Farhana holds an MPA in public and nonprofit management and policy from New York University’s Wagner Graduate School of Public Service.


Greg Keough

Senior Evidence Analyst

Greg is an experienced project manager who has worked to implement multiple data driven programs to address the inequality that we see in our communities. He is passionate about innovative public health initiatives that utilize evidence to improve outcomes in resource-limited environments. Prior to joining Project Evident, Greg worked to expand healthcare access to rural and urban communities in the Mountain West, managed a Bill and Melinda Gates Foundation grant through Columbia University Medical Center, and, most recently, worked at the Sorenson Impact Center managing Pay for Success Transaction Structuring and Feasibility projects.  Greg holds a BS in Finance and an MPH from the University of Utah.


Sherra Lawrence

Senior Evidence Analyst

 Sherra Lawrence has several years of experience using research and evaluation in social sectors to improve the access and quality of programs for children and families. She has a passion for using data and evidence to tell stories and impact change for underserved populations. Her prior work has addressed racial/ethnic disparities, health equity, and welfare for children, families, and communities. She holds a joint MA in Urban and Environmental Policy and Planning and Child Study and Human Development from Tufts University and a BA in Psychology from North Carolina Agricultural and Technical State University.

Siobhán O’Riordan

Senior Consultant

 Siobhán has over 20 years of experience working with foundations and nonprofits, building organizational capacity, strengthening partnerships, and developing leadership. Prior to her role at Project Evident developing talent in service of evidence, Siobhán served in leadership roles at Council on Foundations, National Park Foundation, and Associated Grant Makers.  A valued thought partner and collaborator, Siobhan was recognized for her work in philanthropy by the Boston Business Journal‘s “40Under40” and as a New Ventures in Philanthropy Fellow.  Siobhán has a BA and MAT from Tufts University. 


Sara Peters

Senior Director of Policy and Evidence

Sara is passionate about lifting up impactful programs and policies for communities in need. Previously, she served as the Director of Social Innovation at the Sorenson Impact Center, where she led the Center’s Pay for Success practice and social impact finance portfolio. She has also served as a policy consultant to several nonprofits that provide educational programming and supports to underserved children. Sara holds a BA from Princeton University in Politics and an MPP from the University of Cambridge.


Naima Pittman

Evidence Analyst

Naima brings expertise in education and analytics. She has a deep interest in using quantitative and qualitative analyses to improve education policies and programs. Before coming to Project Evident, Naima worked at The Opportunity Network, a college and career success program for low-income youth of color. She understands the power that programs and policies have in helping communities thrive, and is excited to continue working alongside nonprofits to develop impactful solutions. Naima holds an MA in Education Policy from Columbia University, and a BA in English from Wellesley College.


Kevin Rafter, ph.D

Senior Evidence Director

Kevin has over 15 years of experience in the philanthropy and social sectors using insights from research and evaluation to strengthen strategies and support internal program learning. He is also a skilled communicator who enjoys working with colleagues to share findings and insights in ways that reach key audiences and build understanding in the field. Prior to joining Project Evident, Kevin served in senior roles at Harder+Company Community Research and the James Irvine Foundation. He holds a Ph.D in Environmental Psychology from the City University of New York.


Gabriel Rhoads

Senior Evidence Director

Gabriel brings great energy to the challenge of building evidence and improving programs. For nearly two decades he has approached this work from the various perspectives of funder, evaluator, and nonprofit service provider. Shaped by his background as an Ombudsman and a court mediator, his work relies on careful communication to facilitate understanding across audiences and drive action. Prior to joining Project Evident, Gabriel was Director of Evaluation and Learning for the Edna McConnell Clark Foundation. He earned his MBA from Columbia University.


Jason Snipes

Senior Advisor, Evidence and Evaluation

Jason is a research and evaluation expert with more than 20 years experience in education and youth development. He has designed, conducted, and written about randomized trials and has developed innovative analytic approaches to assess the effects of youth programs. Jason has collaborated with practitioners to develop, refine and implement research to addresses key questions and support knowledge building agendas. He also focuses on communicating research results in ways that are accessible to non-research audiences. In addition to advising Project Evident, Jason is a Senior Program Associate and the Director of Alliance Research for the Western Regional Educational Laboratory at WestEd.

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Gregor Thomas

Director of Data and Evidence Science

Gregor is passionate about putting data to good use. As Lead Data Scientist at Partners for Our Children, he worked on analyzing, synthesizing and presenting Washington child welfare data to system stakeholders as well as to the general public. More recently, at Amazon, Gregor worked on advanced predictive and inferential statistical models to explore impact and proactively solve seller problems. He taught Statistical Analysis and R Programming for the University of Washington and taught A-Level calculus and physics in Tanzania with the Peace Corps, where he authored and published a textbook. Gregor hold a bachelor's degree from Harvey Mudd College (Mathematics) and a master's from the University of Washington (Quantitative Ecology and Resource Management).