Adam Mosseri (@mosseri) leads @Instagram, used by over 3 billion people (1 in 3 humans). He started at Facebook in 2008 as an IC designer, rose to lead News Feed, and took over Instagram from @kevin and @mikeyk in 2018. Since then, Instagram has more than tripled its user base, and Adam is now months away from having run it longer than its founders did. In our in-depth conversation, we discuss: 🔸 The rise of the “product staff” role 🔸 Why Adam is bullish on designers 🔸 What the Instagram…