Jyrki Alakuijala has developed computer-aided neurosurgery, radiation therapy treatment planning systems, and mobile games. He is currently a Tech Lead Manager with Google Research Zürich, Zürich, Switzerland. He is currently a Data Compression Researcher and an Active Member of the open-source software community. A sound installation co-composed by him is played daily on the Helsinki Senate Square at 05:49 pm. He has invented or coinvented the Zopfli, Butteraugli, Guetzli, WebP lossless, Brotli, WOFF2, Pik, Brunsli, and JPEG XL compression formats and algorithms. He has also developed other software tools, including hashing algorithms, CityHash and HighwayHash, a palette reduction algorithm, and the first multiuser chatbot for the Internet.