Gregory Shapiro is a hands-on technology executive and long-tenured CTO of Messaging at Proofpoint with 25 years of experience building and operating large-scale mail and messaging systems from the Bay Area. He blends deep software engineering and systems administration expertise with strategic leadership, having guided technical vision and execution across engineering, IT, and business development functions. An early and ongoing contributor to foundational open-source mail and OS projects—Sendmail and FreeBSD—he brings rare institutional knowledge of Internet messaging infrastructure. Gregory’s background as a senior UNIX and network administrator informs a pragmatic, security-minded approach to resilient system design and incident response. He is known for translating complex operational requirements into maintainable, production-grade platforms that scale.
25 years of coding experience
6 years of employment as a software developer
BS, Computer Science, BS, Computer Science at Worcester Polytechnic Institute
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