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Career profile

Mark Heffernan

Software Engineer

Mountain View, California, United States

Career path.

  1. OpenAI

    Software Engineer

    Jul 2025 - Present
  2. Google

    Senior Staff Software Engineer

    Feb 2019 - Present
  3. Google

    Software Engineer

    Jan 2014 - Feb 2019
  4. Google

    Software Engineer

    Sep 2011 - Jan 2014
  5. Google

    Compiler Engineer

    Jun 2007 - Sep 2011
  6. Megavision

    Electrical Engineer

    Jul 1995 - Sep 1998