Software developer and writer


Cornell University

Company Info

Level K


  • Founder of Level K
  • 10+ years of software development experience, with expertise in blockchain and web development
  • Writer for Investopedia


John P. Kelleher is a blockchain software architect and founder of Level K. He has worked as a software engineer for over a decade and in the blockchain industry for several years. Level K has expertise in technical architecture, smart contract development, and smart contract auditing, and is based in the United States. Level K specializes in decentralized governance and scalability solutions for blockchain, and has worked with over a dozen clients.


John earned his bachelor's degree in applied and engineering physics from Cornell University.

Quote from John P. Kelleher

"I enjoy digging into a subject and breaking down what I discover."