Steve Heffernan is the co-founder and product architect at Mux, the developer-first video infrastructure platform, and creator of Video.js - the open-source HTML5 video player powering playback on Amazon, LinkedIn, Instagram, and Dropbox with over 38,700 GitHub stars. Previously co-founded Zencoder (YC W10), the cloud video encoding startup acquired by Brightcove for $30M in 2012. A self-described hacker on video, he is now leading the ground-up rebuild of Video.js v10 at Mux, which raised $105M Series D in 2021.
signageOS is the hardware-agnostic operating layer for the world's digital signage networks. Born in Prague in 2016 from a frustration with proprietary device chaos, it gives developers a single set of APIs to write one HTML5 app and deploy it across 50+ signage platforms - Samsung Tizen, LG webOS, BrightSign, ChromeOS and the rest - while ops teams remotely monitor, troubleshoot and update every screen from one cloud console.
Jared Friedman is Managing Director of Software at Y Combinator, one of the world's most influential startup accelerators. A Harvard dropout, he co-founded Scribd - one of YC's earliest bets - and grew it to 80M+ users as CTO before joining YC as a partner in 2015. He has read over 12,000 startup applications, advised 20+ YC unicorns, and championed hard tech, biotech, and AI at YC. In 2024 he became one of the loudest voices on vertical AI agents being '10X bigger than SaaS.' He spends roughly 4% of his waking hours in Waymo robotaxis, which he uses as a mobile office.