Michael Callahan

Investor

Palo Alto, California

Overview 

Michael Callahan is a seasoned tech executive based in Palo Alto, California, with a strong background in enterprise software and company building. Notable highlights include serving as the Cofounder and Founding CEO of Awake Security, as well as holding positions such as Chief Technologist at HP and Cofounder/CTO at PolyServe. Currently, Michael Callahan is involved in investing in early-stage companies in sectors like Cloud Infrastructure and ClimateTech/CleanTech, particularly in the San Francisco Bay Area, showcasing his expertise in identifying and supporting innovative startups.

Work Experience 

  • Investor and Advisor

    2018 - Current

    Working with early-stage companies in enterprise infrastructure software, and with various math-, software- and education-related projects

  • Investor, Member Board Of Directors

    2011

    Seed investor in and member of the Board of Directors of the leading company delivering scalable monitoring as a service for the cloud era

Datadog is an observability and security platform that offers infrastructure, applications, software development, and monitoring services.

Raised $1,017,900,000.00 from IVP.

  • Cofounder, Founding CEO, Board Member

    2014 - 2018

    Awake’s advanced network traffic analysis solution recognized malicious intent and learns over time—tracking entities, deducing and remembering their pattens of behavior, and providing actionable insights to elevate a security team’s ability to respond rapidly to danger

  • Entrepreneur in Residence

    2011 - 2014

Greylock Partners invests in entrepreneurs that focus on consumer and enterprise software companies.

  • Consultant

    2010 - 2011

  • Chief Technologist, StorageWorks Enterprise NAS

    2007 - 2009

Hewlett Packard Enterprise is an edge-to-cloud company that uses comprehensive solutions to accelerate business outcomes.

Raised $1,350,000,000.00.

  • Cofounder, CTO

    2000 - 2007

    Cofounded and served as CTO for an early Big Data infrastructure company that built a scale-out cluster file system suitable for mission-critical, latency-sensitive applications. We helped large enterprise and government customers move applications to horizontally-scaled industry-standard servers starting in 2002, long before the approach became common. As the technical founder and CTO, I helped recruit a world-class engineering and business team, raise multiple rounds of funding from Greylock Partners, NEA and Fidelity Ventures, design and deliver the product, and sell our technology into F500/G2000 accounts and major government environments. At time of acquisition by HP, we had over 1000 paying customers.

  • Dir., Advanced Development

    1999 - 2000

Education 

Articles About Michael

Relevant Websites