Samuel Tseitkin is a cybersecurity entrepreneur and cryptography specialist focused on post-quantum security, cryptographic agility, and secure infrastructure for governments and regulated enterprises. He is Founder and CEO of ExeQuantum, where he leads the development of sovereign, formally verified post-quantum cryptography infrastructure designed for cloud, on-premises, and air-gapped environments. He has personally designed ExeQuantum's encryption infrastructure and architected its EQCore platform, with a focus on crypto-agility, compliance, and practical enterprise adoption. The company works with government agencies, critical infrastructure operators, and cybersecurity advisory firms internationally.

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Samuel has also contributed to peer-reviewed research on post-quantum cryptography API usability with RMIT University and has delivered guest lectures and technical talks at institutions including the University of Melbourne, Swinburne University, and Deakin University, as well as cybersecurity and cryptography industry events. Before founding ExeQuantum, he worked as a Software Engineer at Programa and as a developer and full-stack engineer across several technology startups. His technical background spans cryptography, cybersecurity, software engineering, cloud infrastructure, blockchain, and AI-related security research.