Vega and Vega-Lite are from the work of the UW Interactive Data Lab (IDL), and it's many alumni and contributors who continue to evolve it - for without these frameworks, Deneb could not exist.
In addition to working on Deneb, Daniel contributes a number of free and open-source custom visuals to the Power BI Marketplace.
He is extremely passionate about the Microsoft BI stack, particularly Power BI, and has been delivering Power BI solutions since 2014. He is a Microsoft Data Platform MVP, a Power BI Community Super User and regularly presents and blogs on a variety of Power BI subjects. Daniel is also an industry partner with DiscoverEI, transforming environmental data into decisions.
He has authored the Introduction to Developing Power BI Visuals course via RADACAD, to provide a guided learning path for those who wish to learn to develop Power BI Visuals.