Experienced professionals dedicated to helping you build a successful impact venture, fund, and ecosystem support initiative.


Impact Consulting Group is a team of multi-disciplinary strategists, capacity-builders, advisors, and implementers dedicated to developing high-impact, high-capacity ventures and funds.

We bring real-world experience and expertise, practical methodologies, a collaborative, consultative approach - and a nimble business model that allows us to deliver cost-effective services and to mobilize the talent you need to succeed.


Core Team

Jean-Louis Robadey, Founder

Jean-Louis Robadey is the founder of the Impact Consulting Group. He is a senior sustainable development and social impact professional with a twenty-five career as an executive, strategic advisor, organizational consultant, capacity-builder, and funder.

Jean-Louis has held senior roles in a variety of social enterprise, philanthropic, and consulting contexts. He brings extensive experience leading and advising social ventures, funders, responsible businesses and public agencies on impact strategy and execution.

Jean-Louis has developed impact ventures and social investments and built complex capacity development programs and methodologies, domestically and internationally.

View his full contact here: linkedin.com/in/jlrobadey.

Tammy Tullis, principal

Tammy Tullis is a Principal of the Impact Consulting Group. She is a senior sustainable finance leader who has developed financial instruments and supported institutional and other investors.

Tammy Tullis has developed a special expertise in green and sustainable bond instruments, with a focus on emerging markets and developing economies.

She now uses her skills, experience, and expertise to accelerate investable projects, develop sustainable finance instruments, and mobilize resources from mission-aligned funders and investors.


Collaborators and associates.

Working for impact requires a variety of skills, knowledge, and expertise.

Based on project needs - the Impact Consulting Group collaborates with individuals and firms that bring complementary technical and functional skills to catalyze and accelerate high-impact initiatives.

Collaborators are experienced consultants, capacity-builders, facilitators, and executives who are well-versed in all aspects of social impact and sustainability. They bring technical and sector expertise in a variety of social and environmental issues as well as functional expertise across disciplines such as design, innovation and entrepreneurship, corporate responsibility, philanthropy, various investment disciplines, community engagement, organizational transformation - and more.