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| Severin Hacker | |
|---|---|
| Name | Severin Hacker |
| Birth date | 1984 |
| Birth place | Magdeburg, East Germany |
| Nationality | Swiss |
| Occupation | Computer scientist, entrepreneur |
| Known for | Co-founder and CTO of Duolingo |
| Alma mater | ETH Zurich, Carnegie Mellon University |
Severin Hacker Severin Hacker is a Swiss computer scientist and entrepreneur best known as co‑founder and Chief Technology Officer of the language learning platform Duolingo. He is noted for applying machine learning, cognition research, and data‑driven design to language instruction while scaling a consumer technology company from startup to public company. Hacker's work intersects with research communities and institutions in computer science, education technology, and computational linguistics.
Born in Magdeburg in East Germany to Swiss parents, Hacker moved to Switzerland and completed secondary education before entering the ETH Zurich. At ETH Zurich he studied computer science, joining a cohort that included peers engaged with projects connected to European Space Agency and European research networks. Hacker later pursued graduate studies at Carnegie Mellon University, where he worked in the Human‑Computer Interaction Institute and collaborated with faculty associated with Machine Learning Department (CMU), joining research groups that had ties to the National Science Foundation and industry partners such as Google and Microsoft Research.
Hacker began his early career as a researcher and software developer, contributing to projects at the intersection of human‑computer interaction and adaptive learning systems. During his doctoral work at Carnegie Mellon University he published and presented in venues connected to Association for Computational Linguistics, ACM, and IEEE. He collaborated with scholars affiliated with Duolingo's research team and worked alongside graduate advisors who had relationships with centers like Language Technologies Institute and labs that later connected to startups in Silicon Valley. Prior to scaling Duolingo, Hacker gained experience engaging with investors from firms such as Union Square Ventures and accelerators that maintain pipelines with companies like Airbnb and Dropbox.
In 2011 Hacker co‑founded Duolingo with a team that included an intellectual founder from Carnegie Mellon University and early backers from New Enterprise Associates and SV Angel. As Chief Technology Officer he led development of the platform incorporating machine learning models, crowdsourced translation efforts, and gamified lesson design influenced by research from Psychological Science and cognitive psychology labs at institutions like University of Pittsburgh and Stanford University. Under his technical leadership Duolingo integrated systems that used inference engines, reinforcement learning prototypes inspired by work at DeepMind and OpenAI-adjacent literature, and A/B testing infrastructures common among companies such as Facebook and Netflix. Duolingo expanded its product lineup to include podcast series produced in collaboration with media partners and features that connected to language curricula used in districts associated with U.S. Department of Education initiatives.
Hacker's leadership reflects practices adopted by technology executives in firms like Google and Amazon, emphasizing data‑driven decision making, cross‑functional product teams, and engineering hiring pipelines similar to those at Microsoft. He advocates for rigorous experimentation, rapid iteration, and close ties between research labs and product engineering as seen in academic‑industry partnerships such as between Stanford University and Apple. Within Duolingo he has overseen teams comprising researchers from Carnegie Mellon University, Massachusetts Institute of Technology, and international contributors from institutions such as ETH Zurich and University of Zurich, fostering a culture that balances product metrics with academic publication in venues like AAAI and NeurIPS.
Hacker has contributed to the application of machine learning, natural language processing, and psycholinguistics to second‑language acquisition. His work involves adaptive learning algorithms, spaced repetition scheduling, error modeling, and automated assessment systems influenced by research from Association for Computational Linguistics and International Society for Technology in Education. He has co‑authored studies comparing digital learning outcomes with traditional instruction, publishing findings at conferences that include CHI and EDM and collaborating with scholars affiliated with University of Pennsylvania and University of Cambridge. Hacker's teams have released datasets and measurement frameworks that have been used by researchers in computational linguistics and educational data mining.
Hacker has been recognized within technology and entrepreneurship circles, receiving attention from publications and organizations such as Forbes, Fast Company, and The New York Times for innovation in language learning. Duolingo earned accolades and listings including rankings in Time (magazine) and industry awards tied to mobile innovation similar to honors issued by Google Play and Apple App Store annual design lists. Hacker and his co‑founders have appeared on lists curated by investor networks like Y Combinator alumni spotlights and have been speakers at conferences such as SXSW and Web Summit.
Hacker maintains ties to academic institutions, supporting research collaborations with centers at Carnegie Mellon University and ETH Zurich, and participates in philanthropic initiatives that align with education access and technology for global development associated with organizations like UNESCO and non‑profits focused on literacy. He splits time between offices and residences connected to technology hubs comparable to Pittsburgh and San Francisco, and continues to engage with startup ecosystems that include accelerators and venture communities such as Andreessen Horowitz networks.
Category:Swiss computer scientists Category:Technology company founders