Hannah Kromminga has been working in the software/startup industry for 12 years. She helped develop an internal Facebook app for Deutsche Bank as a social intranet and a gift economy platform called Impossible. She successfully launched two sustainable fashion projects in the preparatory phase for GIFTD: WiresGlasses and SILFIR. In 2020, Hannah also co-founded the Greentech Alliance, a now global network of 2000+ greentech start-ups (e.g. Ecosia, refurbed, Plan A).