Leo Zhadanovsky is the Chief Technologist for Elections, Education, and State & Local Government at Amazon Web Services. He leads AWS's election integrity program across U.S. presidential and midterm cycles, and works with education and government customers — from Harvard to state agencies and EdTech companies — to build secure, scalable cloud infrastructure.

Before AWS, Leo served as Director of Systems Engineering at the Democratic National Committee, where he helped build the cloud infrastructure for the Obama 2012 re-election campaign — the first cloud-native presidential campaign in U.S. history. He went on to serve as the lead AWS architect supporting the Hillary for America 2016 campaign, including hands-on incident response during the Russian cyber attack on DNC systems.

Leo has presented at every AWS re:Invent since 2012 and has keynoted conferences from Dublin to Stockholm. Born in Kyiv — then part of the Soviet Union, now Ukraine — he came to the U.S. at age seven and speaks both English and Russian natively. When he's not working on election security or advising on GenAI policy, he's cycling through Los Angeles, chasing the perfect espresso shot, or traveling — logging roughly 150,000 miles a year. He co-produces the AWS Education Podcast and co-chairs the Internet2 NET+ AWS Advisory Board.