Achievements
- Y Combinator S14 alum, built MTailor into a Y Combinator-backed startup and served as CTO
- Led engineering teams at Amazon as Software Engineering Manager
- Contributed as Software Engineer at Google and RockMelt
- Stanford grad with deep expertise in machine learning, high-performance computing, and coding languages like C++, Python, and LaTeX
- Active GitHub contributor pushing tech boundaries
This is Rafi Witten
Homie, check the vibe on Rafi Witten, dude’s the real deal in tech startup land. He’s a YC S14 alum, so he’s been around the block a few times, and trust me, his story is just as lit as his creds.
Rafi kicked things off at the big leagues, working at Amazon as a Software Engineering Manager. Yeah, the giant that’s basically the backbone of online shopping. He was managing teams, building stuff at scale, the kind of experience that makes you see the game differently. Before Amazon, he was a Software Engineer at Google, grinding on some of the coolest projects out there. That’s the kind of background that shows he’s legit, no bullshit.
But Rafi’s not just about big companies. He jumped into startups too, co-founded MTailor, a YC-backed company, where he crushed it as CTO. Basically, he saw a problem, built a tech solution, and led the charge. MTailor was all about making custom clothes fit perfectly, using tech to disrupt traditional fashion. That’s a classic founder move, spot a pain, build a killer product, and go all-in.
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Talk to herAnd get this, he’s got a serious academic background from Stanford, which means he’s not just a coder, but a legit thinker. Plus, he’s deep into machine learning, high-performance computing, and coding languages like C++, Python, and LaTeX. Dude’s contributions on GitHub are fire, showing he’s constantly pushing the boundaries of tech.
What’s crazy about Rafi is how his process shows what it really means to be a founder. He’s been in the trenches at tech giants, learned how real products are built, then took that knowledge and jumped into startups to build something new. It’s like he’s seen the full spectrum, from scale to innovation to problem-solving. That drive? That hustle? That’s what makes him a legit force in the space.
Bottom line, Rafi Witten is a tech guy who’s crushed it everywhere he’s been. From Google and Amazon to founding his own startup at YC, he’s all about using tech to solve problems and shake things up. He’s the kind of founder who’s been there, done that, and keeps pushing forward. No Cap.

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