After graduating from the Brest State University, Belarus with a B.S. degree in physics, Oleg Kostko worked in the Institute of Solid State and Semiconductors Physics of the National Academy of Sciences of Belarus. Oleg Kostko obtained his doctoral degree from the University of Freiburg, Germany in 2007, and in the same year he joined the Berkeley Lab as a postdoctoral fellow. After a short stay at SRI International, where he studied atmospherically relevant processes, he returned back to the Berkeley Lab to lead an effort for developing novel soft X-ray spectroscopies on nanoscale systems. Most of his research involves utilization of VUV, EUV, and soft X-ray radiation generated by the Advanced Light Source, where he works as a beamline scientist. As a part of the Center for X-Ray Optics, Berkeley Lab, he pioneers development of novel electron spectroscopies specifically to probe EUV materials, focusing on direct characterization of the role of low-energy electrons in EUV patterning processes. Dr. Kostko has authored or co-authored over 90 publications.