
Jeff is a Professor of Computer Science & Engineering at the University of Washington, where he co-directs the UW Interactive Data Lab and conducts research on data visualization, data science, and human-computer interaction.
The visualization tools developed by Jeff and his collaborators — including Vega, Vega-Lite, D3.js, and Mosaic — are used by researchers, companies, and data enthusiasts around the world.
Formerly Jeff co-founded Trifacta, a provider of interactive tools for scalable data transformation. Trifacta was acquired by Alteryx in 2022.
Jeff holds B.S., M.S., and Ph.D. degrees in Computer Science from the University of California, Berkeley.
Jeffrey Heer

Ellie Fields
Ellie was formerly the Chief Product and Engineering Officer at Salesloft, where she led development for a sales workflow platform that put AI and action in a tight loop to drive results.
Prior to Salesloft, she was at Tableau Software for 12 years, where she led product strategy and engineering for mobile apps, collaboration, search and Tableau Public. Ellie was part of the core team that envisioned, built and launched Tableau Public and Tableau Online, and led Tableau’s insanely vibrant customer community. She’s proud of her nickname, “the Godmother of Tableau Public.”
Ellie has an MBA from Stanford University, and a B.S. in Engineering and a B.A. in Policy from Rice University.