Mike Koss is a Seattle-based angel investor who previously spent nearly two decades at Microsoft. See sector focus and contact routes.
Mike Koss is a Seattle-based angel investor who previously spent nearly two decades at Microsoft, where he played a key role in developing Excel, Outlook, and SharePoint[5]. He later worked as a software engineer at Google and served as the launch director of StartPad.org, a Seattle software co-working space[5]. His investment thesis targets pre-seed and seed-stage companies in Internet, SaaS, software, developer tools, enterprise software, and social bookmarking[1]. Koss invests primarily in the Seattle area, with a focus on technology sectors aligned with his engineering background[1]. Notable portfolio companies include Faves (a social bookmarking site he founded and led as CEO), RescueTime, and Puzzazz, for which he made an angel investment in July 2011[1][3][4]. He also invested in Museum of Flight and supported Bitcoin-related projects during his entrepreneurial phase[2][5]. While no public writing or distinctive point of view is explicitly documented in available sources, his career reflects a consistent blend of enterprise software expertise and startup community leadership[5].
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