Daniel S. Katz is Assistant Director for Scientific Software and Applications at the National Center for Supercomputing Applications (NCSA), Research Associate Professor in Computer Science, Electrical and Computer Engineering, and the iSchool at UIUC, and Guest Faculty at Argonne National Laboratory. Dan's interest is in the development and use of advanced cyberinfrastructure to solve challenging problems at multiple scales. His technical interests are in applications, algorithms, fault tolerance, and programming in parallel and distributed computing, including HPC, Cloud, etc. He is also interested in policy issues, including citation and credit mechanisms and practices associated with software and data, organization and community practices for collaboration, and career paths for computing researchers. He is a developer of the Swift/Parsl workflow systems, co-leads FORCE11 Software Citation activities, leads the Working towards Sustainable Software for Science: Practice and Experiences (WSSSPE) community, and is a founding editor of the Journal of Open Source Software.