Maciej Szymczyk

Maciej Szymczyk

Y Combinator Logo Batch: W25

Achievements

  • Made it into Y Combinator W25, one of the top startup cohorts
  • Co-founded SalesPatriot, helping defense firms win Pentagon contracts with AI
  • Developed AI applications for over four years before college
  • Worked on the Human Brain Project, the world's largest neurological research initiative
  • Achieved a perfect score (45/45) in the IB Diploma Program in Poland
  • Based in SF and Warsaw, bridging tech innovation and global impact

Meet Maciej Szymczyk

Yo, have you heard of Maciej Szymczyk? Dude’s the real deal in the startup world. He’s part of YC W25, which is like being in the big leagues already. Co-founded this company called SalesPatriot, and they’re basically helping defense companies crush it with the Pentagon. Like, they’re using AI to make contract stuff way easier and smarter. That’s some advanced tech for real.

But what’s crazy is his process. He’s been deep into AI for like four years-before even jumping into Berkeley on a full scholarship. That’s not your average guy. He’s worked on the Human Brain Project, which is the biggest neurological research thing out there. So, this dude’s got brains, literally and figuratively.

And get this-his motivation? Seeing what happened after Russia invaded Ukraine. That shit hit him hard. He’s all about using AI to beef up NATO’s military capabilities and modernize Western logistics. Like, he’s not just building cool tech for the sake of it-he genuinely wants to make a difference, help defend, and make the world safer.

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He grew up in Poland, crushed the International Baccalaureate with a perfect score (45/45-no cap), then bounced over to Berkeley. He calls himself a “dropout” from UC Berkeley, but don’t get it twisted-he’s a YC founder, which is basically the startup world’s elite. He’s also a Rafal Brzoska Foundation scholar, so the guy’s got some serious backing and recognition.

Now, he’s based in SF and Warsaw-talk about a global vibe. He’s bridging Eastern Europe and Silicon Valley, and you can feel that mix of tech hustle and real-world impact in everything he does.

Bottom line? Maciej’s the kind of guy who saw the bullshit in the world, got pissed off, and decided to do something about it with AI. He’s building tools to help the military be smarter, faster, better. Smart, driven, and with a purpose-that’s why he’s important. Not just another startup dude, but someone who’s actually trying to change the game.

Founder ID: 100851

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