Severin Hacker, Ph.D. has served as our Chief Technology Officer and a member of our board since co-founding Duolingo with Luis von Ahn in August 2011. Severin holds a B.S. in Computer Science from Eidgenossische Technische Hochschule Zurich, Switzerland, and a Ph.D. in Computer Science from Carnegie Mellon University.

Judith is a Partner at La Famiglia, a European VC investing into B2B technology companies that enable or disrupt large industries. She focuses on the future of work, as well as data and ML-driven business models.

Christian Angermayer is a serial entrepreneur, investor, and founder of his private investment firm, Apeiron Investment Group. With more than USD 3.5 billion under management and 50 FTEs across five international locations, Apeiron focuses on Life Sciences, FinTech/InsurTech/PropTech/Crypto, and FutureTech (e.g. SpaceTech, FoodTech, AI).Apeiron has a global approach and deploys its capital across the entire company lifecycle, from founding companies in-house, seed/startup investments to large-scale investments in listed companies. As Apeiron invests predominantly its own capital, the team is able to be highly entrepreneurial, reliable, and flexible.

Lena is Co-Founder and inventor of air up, the world’s first drinking-bottle that flavors water just by scent – innovative, sustainable and without sugar or artificial additives. Originally, Lena developed the first prototype of air up in her Bachelor Thesis at the University of Schwäbisch Gmünd which led to founding her own start-up in 2019. Since then, over 1M. drinking systems have been sold which saved 85 Millions of PET bottles and 2.465 tons of unnecessary sugar already.