Michael Ossareh

Michael Ossareh

Y Combinator Logo Batch: W07

Achievements

  • Founded Heysan, a mobile messaging app, during Y Combinator W07 batch, later acquired by Good Technology
  • Built and scaled Twitch as part of the founding team and served as Engineering Manager
  • Participated in multiple startups across messaging, gaming, and mobile sectors including Flirtomatic, Gamecasta UK, 12Snap, and Onetel
  • Invests actively as an angel and activist investor in Southeast Europe and emerging markets
  • Proven track record of creating impactful tech products that get acquired and scaled
  • A serial entrepreneur with extensive experience across the startup ecosystem

All about Michael Ossareh

Okay, so here’s the story on Michael Ossareh. The dude’s a straight-up startup machine, like a serial entrepreneur who’s been jumping into the deep end since way back. He was part of the YC W07 batch, so he’s been in the game for a minute, and trust me, he’s crushed it.

His story kicks off with Heysan, a mobile messaging app he co-founded and built during his YC days. That was back in winter 2007, and it was all about giving folks free messaging and community vibes on their phones. The thing was legit enough to get acquired by Good Technology in 2009, so he already proved he knows how to build stuff that gets noticed.

But that’s just the start. After that, he jumped into Twitch, not just as a user but as part of the founding team, managing engineering. Twitch, for those who don’t know, is the streaming giant, live gaming, live everything. That’s the real deal, and being in the trenches there shows he’s got skills not just in starting stuff but in scaling and managing massive platforms.

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He’s dipped his toes in a bunch of other startups too, Flirtomatic, Gamecasta UK, 12Snap, Onetel, TheCloud UK, PinPointAccuracy, FamFi, Rah… basically a who’s who of tech ventures across messaging, gaming, mobile, and data. The dude’s been everywhere, and he’s always been the guy behind the scenes making shit happen.

What’s crazy is, he’s not just about building companies. He’s also an angel and activist investor, especially in Southeast Europe and new markets. That shows he’s got a real passion for backing founders, helping ecosystems grow, and pushing innovation in places that need it most. He’s got this vibe of not just doing his own thing but lifting others up.

So, what does this all say about him? Michael’s not just a guy who’s been around the block. He’s driven by a real passion for tech and startups. Every project he jumps into, he’s got that hustle, whether it’s messaging, streaming, or mobile. He’s the guy who’s not afraid to get his hands dirty, learn, iterate, and then scale. Starting something isn’t just about the idea for him; it’s about making shit happen, disrupting, and creating value.

In short, Michael Ossareh is that rare founder who’s seen it all, built stuff that’s been acquired, helped scale one of the biggest streaming platforms, and now he’s out here investing and empowering new markets. The guy’s got the experience, the hustle, and the vision to keep pushing boundaries. No cap, he’s a legit force in the tech world, the kind of dude who’s been through it all and still keeps pushing forward.

Founder ID: 108470

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