Neal Kruis has been developing building energy modeling software since 2007. He is the Vice President of Big Ladder Software and has been contracted as RESNET's Energy Modeling Director since 2018. He has a PhD in Architectural Engineering from the University of Colorado at Boulder. Neal is a core developer of the Department of Energy's EnergyPlus simulation engine and the California Simulation Engine (CSE) used for residential Title 24 compliance calculations. He is an active member of ASHRAE Technical and Standards committees (TC 4.7 "Energy Calculations", SPC 140 "Method of test for Evaluating Building Performance Simulation Software ", SPC 205 "Representation of Performance Data for HVAC&R and Other Facility Equipment", SPC 229 "Protocols for Evaluating Ruleset Implementation in Building Performance Modeling Software"). Neal also serves on the board of the U.S. affiliation of the International Building Performance Simulation Association (IBPSA-USA).