Dr. Jyrki Alakuijala is an active member of the open source software community, and a data compression researcher. Jyrki works at Google as a Technical Lead/Manager, and his recent published work has been with Zopfli, Butteraugli, Guetzli, Gipfeli, WebP lossless, and Brotli compression formats and algorithms, and two hashing algorithms, CityHash and HighwayHash. Before his Google employment he developed software for neurosurgery and radiation therapy treatment planning.