Meet Our Dedicated Team

Hollis McLellan, MPH Founder & CEO

HOLLIS MCLELLAN

Founder and Executive Director

Hollis's background is in anthropology, finance, and environmental health and her career has evolved into a passionate commitment to ecosystem restoration. After working in finance and public health, she founded Collaborative for Change to bridge the gap between restoration projects and funding.

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Husein Siamwalla Project Manager

HUSEIN SIAMWALLA

Project Management Director

Husein brings extensive experience in sustainable development, climate change initiatives, and agroforestry. He has led projects that expanded market presence, integrated advanced agricultural technologies, and promoted sustainable farming practices. His partnership with Collaborative for Change, Inc. has introduced key innovations such as AgroForester Pro, a data-driven agroforestry database and carbon trading platform, as well as the development of sustainable container farms aimed at supporting food security and climate resilience.

Alejandra Garcia Communications Consultant

ALEJANDRA GARCIA

Communications Consultant

Alejandra is a communications and digital marketing consultant with a creative background. An advocate for a positive and interconnected relationship with nature. This belief informs her work in both the corporate and charitable worlds. She is an expert in digital strategy and IT and is skilled in delivering high-performing domestic and international campaigns across multiple online and traditional platforms.

Jill Wagner Forestry Consultant

JILL WAGNER
Forestry Consultant

Jill is the founder of Future Forests Nursery on Hawaiʻi Island and the director of the Hawaiʻi Island Seed Bank. Native reforestation and seed banking are my life’s work, which involves a deep commitment to supporting the health of our planet. I believe that communities should lead their forestry projects and receive the support they need to nurture new forests and keep existing forests standing for future generations. I help international forestry partners create the foundation for their projects, seed banks, and nurseries, that will serve them as they build on their aspirations to heal the planet. It is important that we protect the biodiversity of our region, and we need to know the principles and practices to achieve success.

Leslie (Les) Behrends Water Advisor

LES BEHRENDS

Water Advisor

Les is a retired life scientist with over forty years of progressive experience in applied aquaculture research and nature-based wastewater management solutions. Throughout his career, he has contributed to national and international projects promoting the culture of tilapia, catfish, and shrimp, as well as the deployment of advanced constructed wetlands technologies for the treatment of domestic, agricultural, and industrial wastewater.

Les remains passionate about sustainable water and food systems and is committed to sharing his knowledge and practical experience to drive positive change in food production and the restoration of degraded aquatic ecosystems.

Bwana Pike Ng’oma Project Coordinator for Malawi

BWANA PIKE NG'OMA

Project Coordinator for Malawi

Bwana Pike is a Malawian environmental activist, forester, agroforester, and climate advocate. He also serves as the Chief Executive of We Clean We Green Malawi, an organization driving environmental conservation and youth empowerment throughout the region. In his role with Collaborative for Change, Pike supports reforestation, school infrastructure, and public health initiatives across Malawi. He works closely with community leaders, schools, and health centers to ensure that each project reflects local priorities and is built for long-term impact.

Moses Ojunju Project Coordinator for Kenya

MOSES OJUNJU

Project Coordinator for Kenya

Moses Ojunju is a Kenyan climate activist, agroecologist, and founder of the Global Foundation for Climate Change Africa (GFCCA). He leads regional initiatives focused on regenerative agriculture, youth engagement, and nature-based solutions across Kenya. As Project Coordinator with Collaborative for Change, Moses supports reforestation, seed banking, and rural resilience programs while helping to scale GFCCA’s impact through strategic partnerships and open-source innovation.