Petr Mitrichev is a Russian competitive programmer who has won multiple major international competitions. His accomplishments include gold and silver (2001) medals in the IOI, gold medals in the ACM ICPC World Finals as part of the team of Moscow State University and winning Google Code Jam (2006), the Topcoder Open, the Topcoder Collegiate Challenge, Facebook Hacker Cup as well as numerous national and online contests. He has achieved the highest rating ever among the Algorithm competitors of Topcoder and consistently ranks in the top two of the world. He is the second highest rated Algorithm coder on Topcoder ratings as of February 2021. He currently works at Google on the search engine and helped to prepare Code Jam, until the program was discontinued in 2023.