Michael Seibel

    Y Combinator, Socialcam, and Justin.tv / Twitch.tv

    Hello, my name is Michael Seibel. I am 37 years old and have lived and worked in the Bay Area since 2006. Currently, I work at Y Combinator as a full-time partner and CEO of the YC startup accelerator program.


    Previously, I was a co-founder and CEO of Justin.tv from 2007 - 2011 and the co-founder and CEO of Socialcam in 2012. During 2012, Socialcam participated in Y Combinator, raised angel financing from a group of amazing investors, and sold to Autodesk Inc. for $60m (link). Needless to say - it was a busy year. In 2014, Justin.tv became Twitch Interactive and under the leadership of Emmett Shear and Kevin Lin sold to Amazon for $970m.


    Before getting into tech, I spent a year as the finance director for a US Senate campaign and before that I graduated from Yale University with a bachelor's degree in political science. Today I spend the large majority of my free time cooking, reading, traveling and going for long drives. I live in San Francisco, CA with my amazing wife Sarah and our son Jonathan.

  • Apply to Y Combinator

    Y Combinator (YC) was the path I took to gain entry into the startup ecosystem. To learn more about YC click here and apply click the button below.

  • Essays

    Here is some advice I commonly give to YC startups:

  • Video Advice

    Below is Youtube playlist of advice I've given over the years.

  • If you want to learn more about starting a startup:

    Check out Startup School, a massive open online course (MOOC) created by YC that can be your guide to getting your startup up and running.

  • Investments

    I am a personal investor/advisor for the following companies/funds


    Reddit, Cruise, Brex, Figma, Triplebyte, Captain 401k, Equipment Share, PayFazz, Easypost, Paystack, Mattermost, Rezi, Rippling, Zenysis, Jopwell, AptDeco, Magic, True Link, Wave, Scentbird, Squire, Bellabeat, Panorama Education, Arcus, Burrow, PeerWell, L., Give Campus, iLabservice, Lugg, Career Karma, Social Construct, Reach Labs, Grain, Aella Credit, Elpha, TIZETI, Wallets.ng, SketchDeck, Cambly, RankScience, Waystocap, Goodcover, CareRevolutions, Transcelestial, Better Health, Driver Technologies, Point, Newcraft, Qwest, and Elpha



    Y Combinator, Initialized, Precursor, Equal, Next Play, Cherubic, Microtraction, Ingressive, Dream Machine, Weekend Fund, Plexo, Ventures Platform, 645 Ventures, and Investo.

  • Contact me

    Feel free to reach out anytime:

    Twitter: @mwseibel

    Email: michael@ycombinator.com

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