Our Mission

Transform organic waste that harms our planet into sustainable fertilizer that can help it. At Full Circle, we’re developing the future of composting to help our customers and communities build a truly sustainable food system.



Founding Team

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Charles Smith

Charles is an optimist who believes that people working together can overcome any challenge. The more he learned about the scale and severity of the problems with food waste, the more he felt motivated to do something about it.

After growing up in Villanova Pennsylvania with his three older sisters, Charles attended Dartmouth College where he met Sam and later connected with Jackson. The three created Full Circle to bring people together around shared goals of sustainability, and local economic growth. Charles began his career at Morgan Stanley before entering the NYC tech startup scene and advancing through various positions in Business Operations and Customer Success.

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Jackson Sengle

Jackson grew up in Hinesburg, Vermont surrounded by acres of woods, fields, streams and farmland. He enjoys sugaring, sailing on Lake Champlain, kayaking on Lake Seymour, and hiking in the Green, White, and Adirondack mountains.

Jackson attended Lehigh University. earning a BS in Bioengineering. He pursued a doctoral degree, conducting research in a microbiology lab at the Thayer School of Engineering at Dartmouth focusing on diagnostic techniques for Tuberculosis and other respiratory bacterial infections. He has worked as an engineer in silicon valley and at pharmaceutical companies working on biological therapeutic drugs.

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Sam Ross

Sam’s passion for agriculture and sustainability began during his childhood in Vermont, where his family has gardened and composted since before he can remember.

He left Vermont for a few years to pursue environmental & economics degrees at Dartmouth College for his undergraduate education. More recently, he earned a Master of Science in Environmental Economics and Climate Change from the London School of Economics in 2017. 

He returned to New England upon graduation, where he has worked alongside Charles and Jackson to realize their shared vision of transforming food waste into a social good.

 Our Story

Full Circle started with a simple idea. Food and other organic material are wasted on a scale so massive that it harms our planet. We are determined to stop it.

We recognized that organic waste disposal and synthetic fertilizers are both responsible for significant environmental damage, including greenhouse gas emissions. So we set out to learn everything we could about organics recycling, in order to transform harmful waste into a valuable agricultural input.

We’re developing a novel, anaerobic fermentation process powered by a finely-tuned microbial community that we call Full Circle Green Microbes. We created FCGM to revolutionize both organic waste disposal and fertilizer production.

We chose a third-generation Vermont farm where we would build out our office and lab. Taproot Farm offers a vibrant agricultural community with plenty of organic waste to test the anaerobic fermentation process and space to use the fertilizer output. It also doesn’t hurt that one of our founders is part of Taproot’s third-generation family.

In operation since the summer of 2018, Full Circle is dedicated to product innovation and understanding the organic waste landscape through research and partnerships. These partnerships focus on industries at the heart of organics recycling, including agriculture, composting and the burgeoning hemp sector. We believe that organic waste is an urgent environmental issue and that now is the time for action.