David Aronoff is a co-founder of MCJ Collective, a climate focused venture capital firm and founder community. He works at the intersection of investing, entrepreneurship, and climate impact, supporting early stage companies tackling climate challenges. David helped build MCJ Collective to combine capital, community, and practical support for climate founders. His work emphasizes long term impact, operational rigor, and founder alignment. He is actively involved in advising and supporting portfolio companies beyond capital alone. Through MCJ Collective, he contributes to building a connected ecosystem for climate driven entrepreneurship.