Demian received his A.B. from Vassar College (2000) and Ph.D. in physical chemistry from the University of Wisconsin, Madison (2006). His doctoral research applied mixed quantum mechanical and molecular mechanical potentials to investigate proton binding and transfer in biological molecules. In the Biochemistry Department of UW-Madison (2006-2010), he was awarded a CIBM postdoctoral trainee fellowship and worked on the theory and computation of correlated motions in biological crystals and the associated X-ray scattering. From 2011-2014, he was a postdoctoral fellow in the UT/ORNL Center for Molecular Biophysics, where he investigated mercury hydration, speciation, and transformation in the biosphere; this work was carried out as part of the ORNL Mercury Science Focus Area. After spending two years as an assistant professor in the Department of Chemistry at Earlham College, he joined the Thermodynamic Research Center at NIST (2016). He develops and maintains TRC technology that aids the collection, critical evaluation, and dissemination of thermophysical and thermochemical experimental data. His research is focused on multi-scale modeling of condensed-phase molecular processes ranging, for example, from quantum chemical investigations of ion solvation free energy to the structural informatics and thermodynamics of biological interface formation.