Johannes Wachs

Director, Center for Collective Learning, Corvinus Institute of Advanced Study
Johannes Wachs

I am the Director of the Center for Collective Learning at the Corvinus Institute of Advanced Study and an Associate Professor at Corvinus University Budapest. I am also affiliated with CERS and CSH. In the summer and fall of 2026, I am a Senior Fellow at Microsoft's AI Economy Institute. From December 2026, I will lead an MTA Lendület/Momentum research group on the geography of software.

I study the digital economy and its economic geography. I am interested in how people build software together, how AI is transforming knowledge work, and what role geography plays in these processes. I develop data and network science methods to address these questions. For an idea of the kind of data I work with, have a look at this interactive map of the use of Claude Code.

News

2026 I won an MTA Lendület/Momentum grant to lead a new research group on the geography of software. If you are interested in joining, keep in touch: there will be open calls for PhD and postdoc positions.
2026 I am a Senior Fellow at Microsoft's AI Economy Institute.
2026 Our paper on how AI is changing software development is out in Science.
2026 I'll be giving a keynote at the Conference on Economic Complexity in Istanbul.
2025 The new MSc in Social Data Science is launching at Corvinus this fall.

Recent Highlights & Working Papers

  • Who is using AI to code? Global diffusion and impact of generative AI S. Daniotti, J. Wachs, X. Feng, F. Neffke Science (2026) Links: paper, preprint Media/Press: World Bank talk
  • The software complexity of nations S. Juhasz, J. Wachs, J. Kaminski, C. Hidalgo Research Policy (2026) Links: paper, preprint
  • The building blocks of software work explain coding careers and language popularity X. Feng, J. Wachs, S. Daniotti, F. Neffke Working paper Link: preprint
  • Anchor Sponsor Firms in Open Source Software Ecosystems B. Nemeth, J. Wachs Working paper Link: preprint

Selected Work

  • The dynamics of leadership and success in software development teams L. Betti, L. Gallo, J. Wachs, F. Battiston Nature Communications (2025) Link: paper
  • Large language models reduce public knowledge sharing on online Q&A platforms R.M. del Rio-Chanona, N. Laurentsyeva, J. Wachs PNAS Nexus (2024) Link: paper Media/Press: WSJ
  • Digital Traces of Brain Drain: Developers during the Russian Invasion of Ukraine J. Wachs EPJ: Data Science (2023) Link: paper Media/Press: WSJ · Bloomberg · New Scientist
  • Agency independence, campaign contributions, and favouritism in US federal government contracting M. Fazekas, R. Ferrali, J. Wachs Journal of Public Administration Research and Theory (2022) Link: paper Beryl Radin Award
  • The Geography of Open Source Software: Evidence from GitHub J. Wachs, M. Nitecki, W. Schueller, A. Polleres Technological Forecasting & Social Change (2022) Link: paper Media/Press: Presentation at OFE
  • Does Crowdfunding Really Foster Innovation? Evidence from the Board Game Industry J. Wachs, B. Vedres Technological Forecasting and Social Change (2021) Link: paper Media/Press: Data Skeptic podcast
  • How Gamification Affects Software Developers: Cautionary Evidence from GitHub L. Moldon, M. Strohmaier, J. Wachs ICSE (2021) Links: paper, preprint Media/Press: Presentation at ICSE

I am the program director of the MSc in Social Data Science at Corvinus University Budapest.

At Corvinus, I teach courses on machine learning and programming. Previously, I taught computational social science and social networks at WU Vienna and RWTH Aachen.

Prospective thesis students and PhD students are welcome to contact me.

Previously, I was an Assistant Professor at the Vienna University of Economics and Business and a researcher at the Complexity Science Hub Vienna. Before that, I was a postdoctoral fellow at RWTH Aachen with Markus Strohmaier.

I received my PhD in Network Science from Central European University in 2019, where my thesis on corruption was supervised by Janos Kertesz. I also hold an MSc in Applied Mathematics from CEU and a BS in Mathematics and Economics from Tulane University.