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Stealth Founders

Discovering tomorrow’s PayPal Mafia Today

9.11.26 - The Polymarket Mafia

Sep 10, 2026

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1 min read

9.11.26 - The Polymarket Mafia

Polymarket’s Head of Protocol, US President, markets and infrastructure leads, plus early engineers, acquired founders, and National Chess Masters building across prediction markets, crypto and AI.

9.8.26 - The Mach Industries Mafia

Sep 7, 2026

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1 min read

9.8.26 - The Mach Industries Mafia

Mach’s founding engineers, first manufacturing & supply chain leader, VP Engineering and integrated systems head spinning out to build across defense, aerospace, subsea robotics and consumer hardware.

9.8.26 - The Harvey Mafia

Sep 7, 2026

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2 min read

9.8.26 - The Harvey Mafia

Harvey’s founding AI engineering leader, VP Engineering, Head of Security and acquired Mirage founders, plus early product, design and research talent building again.

9.7.26 Top Founders of the Week

Sep 6, 2026

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2 min read

9.7.26 Top Founders of the Week

Cognition’s engineers and researchers, Clay’s 1st and 5th employees, Wonderful’s former GM & Lokalise founder, and Unacademy’s co-founder & CTO starting new

9.6.26 - The Cognition Mafia
LockSimple

Sep 5, 2026

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2 min read

9.6.26 - The Cognition Mafia

Cognition’s engineers, researchers and deployed AI talent spinning out, including repeat founders, xAI MTS alumni, and early builders from Windsurf, DeepMind, Kalshi and Fizz.

9.4.26 - SoftBank-Backed Co-Founder & Early Engineer + $30B Crusoe’s VP Eng & Infra Leaders
LockSimple

Sep 3, 2026

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2 min read

9.4.26 - SoftBank-Backed Co-Founder & Early Engineer + $30B Crusoe’s VP Eng & Infra Leaders

Unacademy’s co-founder & CTO and early technical talent, alongside Crusoe’s VP Engineering, cloud infrastructure director and distributed computing engineers building new AI infrastructure companies.

9.3.26 - First Round-Backed Co-Founder + HiddenLayer Founding Engineer and Repeat Founders from  Wonderful AI
LockSimple

Sep 2, 2026

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2 min read

9.3.26 - First Round-Backed Co-Founder + HiddenLayer Founding Engineer and Repeat Founders from Wonderful AI

Aranya co-founder, HiddenLayer founding engineer, and Wonderful’s former Baltic GM, Argentina & Chile CTO, and Palantir-trained CTO Office leader building again.

8.31.26 - The Clay Mafia
LockSimple

Aug 30, 2026

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2 min read

8.31.26 - The Clay Mafia

Clay’s 1st and 5th employees, 1st marketing hire, early growth and engineering leaders spinning out to build across AI, fintech, healthcare, and physical sciences.

8.30.26 - Top Founders of the Week

Aug 29, 2026

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2 min read

8.30.26 - Top Founders of the Week

Perplexity’s earliest engineers and acquired founders, Blue Origin’s original team and SpaceX veterans, plus Hugging Face’s founding research crew and research leads spinning out.

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