Alex Roetter is a former Twitter SVP of Engineering who founded the nonprofit Terraset to use philanthropic capital as an advanced market commitment buyer for engineered carbon removal, creating a rare structure among VCs who typically only invest rather than also operate climate philanthropy. At Moxxie Ventures, he applies his software background from Google and Twitter to non-obvious areas like African electric buses, and he flies medical transport missions with Angel Flight as a private pilot, combining his aviation skills with direct community service. Alex Roetter is a former Twitter SVP of Engineering who founded the nonprofit Terraset to use philanthropic capital as an advanced market commitment buyer for engineered carbon removal, creating a rare structure among VCs who typically only invest rather than also operate climate philanthropy. At Moxxie Ventures, he applies his software background from Google and Twitter to non-obvious areas like African electric buses, and he flies medical transport missions with Angel Flight as a private pilot, combining his aviation skills with direct community service.