Mark Strefford is an experienced product leader and entrepreneur, currently serving as the Co-founder and Head of Product at Callin, a platform focused on social podcasting and audio content. Before co-founding Callin, Mark made significant contributions at Twitter, where he held various product leadership roles. At Twitter, he was instrumental in developing and scaling products related to live video, including Periscope integrations, and creator tools, demonstrating a strong focus on enhancing user engagement and content creation capabilities. His expertise lies in product strategy, user experience design, and building innovative consumer-facing technology products.
Mark Strefford's work history includes a series of influential roles in various companies. Here is a detailed list of his professional journey:
Co-founded Callin in 2020, a social podcasting application aiming to simplify audio content creation and discovery. Leads product strategy, development, and vision to empower creators and listeners in the evolving audio landscape.
Served in key product roles at Twitter, significantly contributing to live video initiatives (including Periscope) and creator monetization tools. Focused on enhancing the platform's capabilities for real-time content and supporting content creators.
Contributed to Ustream, a live interactive broadcast platform, prior to its acquisition by IBM. Gained early experience in the live streaming video space, which became foundational for later roles.
Udacity - Year 2015
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