Julian Tempelsman

Julian Tempelsman

Y Combinator Logo Batch: W15

Achievements

  • Built anti-abuse and fraud systems at Google for Gmail, Wallet, and Drive
  • Co-founded Smyte, a Y Combinator-backed trust and safety startup, serving clients like GoFundMe and Quora
  • Smyte was acquired by Twitter in 2018, a major validation of his work in online safety
  • Led engineering and data science teams at Twitter post-acquisition
  • Currently co-founder and CTO at Octave, advancing trust and safety tech

Meet Julian Tempelsman

Yo, have you heard of Julian Tempelsman? The guy’s a straight-up legend in the startup and anti-abuse world. So, here’s the deal, Julian’s been around the block, and he’s got that killer combo of tech chops and real hustle.

Started out at Hamilton College, nothing flashy, just the usual college grind. But the real story kicks off when he jumps into the tech scene. First big move was Google. Not just any gig, he’s deep in Gmail’s spam and abuse team, helps fight the haters, keeps the platform clean. Then he moves to Google Wallet and Drive, tackling fraud and abuse there too. Basically, Julian’s been on the front lines, fighting the bullshit that plagues online platforms. That’s where he gets his first taste of what’s possible, what’s broken, and what needs fixing.

Fast forward, he co-founds Smyte, a Y Combinator W15 startup. This was his true breakout moment. Smyte was all about trust, safety, anti-abuse, fraud, the stuff that makes or breaks online communities. Julian crushed it by building systems that major players like Indiegogo, GoFundMe, Quora, Medium, and TaskRabbit relied on to stay safe. Basically, he turned his Google experience into a full-on startup, solving real world problems that everyone else just talks about. And no surprise, Smyte got snapped up by Twitter in 2018. That’s a huge win, shows how much he’s valued in the space.

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But Julian didn’t stop there. After Twitter bought Smyte, he jumped into leadership roles at Twitter itself, running engineering and data science teams. The dude’s not just about building tech, he’s about leading teams, making sure the tech works at the highest level. Now, he’s the co-founder and CTO at Octave, pushing forward with new ideas in the same space.

What does all this say about him? He’s a problem solver who saw a big-ass hole in online trust and safety and jumped right in. He’s motivated by real shit, protecting platforms, fighting abuse, making the internet safer. He’s not about bullshit fame; he’s about having an effect, and he’s damn good at it. Every step from Google to Smyte to Twitter, he’s been chasing that “how do I fix this?” vibe, and he’s crushed it every time.

So yeah, Julian’s the guy who’s been building the backbone of online safety tech, making sure platforms stay trustworthy. He’s the real deal, a techie with a mission, constantly pushing the edge of what’s possible. No Cap.

Founder ID: 107374

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