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Stealth Founders

Discovering tomorrow’s PayPal Mafia Today

4.15.26 - Flock CTO, Parasail Founding Engineer, and a Repeat YC Founder

Apr 14, 2026

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1 min read

4.15.26 - Flock CTO, Parasail Founding Engineer, and a Repeat YC Founder

Flock Safety’s Founder & CTO + early Flock engineering leaders, Parasail’s founding engineer, and a YC-backed founder (Code Four)

4.14.26 - Mintlify’s 1st FTE, YC Founders, Abstract-Backed Founding Engineer, and an IMO Medalist

Apr 13, 2026

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2 min read

4.14.26 - Mintlify’s 1st FTE, YC Founders, Abstract-Backed Founding Engineer, and an IMO Medalist

Mintlify’s first engineer, YC-backed founders, Founding Teams from Build & Chapter, and an IMO medalist

4.13.26 - $2.5B CTO, $50M+ Exit Founder, and Starfish Chief Engineer
LockSimple

Apr 12, 2026

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4 min read

4.13.26 - $2.5B CTO, $50M+ Exit Founder, and Starfish Chief Engineer

Function Health CTO, Getlabs Founder (YC → acquired), Starfish Chief Engineer ($150M+), and SiFive SVP & GM ($3.6B)

4.10.26 - Top Founders of the Week
LockSimple

Apr 11, 2026

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5 min read

4.10.26 - Top Founders of the Week

Mach Industries CTO, Early Anduril Engineering Leader, senior SpaceX Directors & Leaders, Hermeus Co-Founders, and Stipple Bio’s Co-Founder & CTO

4.9.26 - Khosla-Backed Unicorn Founders, a $100M a16z-Backed Bio Founder, and Early Sarvam & AfterQuery Builders
LockSimple

Apr 9, 2026

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6 min read

4.9.26 - Khosla-Backed Unicorn Founders, a $100M a16z-Backed Bio Founder, and Early Sarvam & AfterQuery Builders

Hermeus Co-Founders & first avionics hire turned YC-backed founder, Stipple Bio’s Co-Founder & CT), and early Sarvam AI & AfterQuery team

4.8.26 - The SpaceX Mafia Pt. 3

Apr 7, 2026

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5 min read

4.8.26 - The SpaceX Mafia Pt. 3

Serial CTO behind BuildOps (>$200M from Founders Fund), SpaceX Dragon & Falcon Senior Directors, Relativity’s former SVP of Manufacturing, YC founders, and a Shield AI engineering leader turned founder

4.7.26 - SpaceX Mafia (Pt. 2)
LockSimple

Apr 6, 2026

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8 min read

4.7.26 - SpaceX Mafia (Pt. 2)

Shield AI’s Co-CTO, 14-year SpaceX Director, Starlink engineering leads, founders of $100M+ startups, and Anduril leaders building next-gen space and autonomy startups

4.6.26 - The SpaceX Mafia
LockSimple

Apr 5, 2026

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8 min read

4.6.26 - The SpaceX Mafia

Veteran SpaceX engineers and Starlink directors, ex–Anduril/Mach leaders, Founders Fund & Khosla-backed founding employees, and repeat YC Founders building in space and defense

4.5.26 - Top Founders of the Week
LockSimple

Apr 5, 2026

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5 min read

4.5.26 - Top Founders of the Week

Founding MTS @ Physical Intelligence, Mistral researchers from DeepMind, OpenAI, and Meta FAIR, WHOOP CTO, Saronic robotics architect, and Mercury founders with exits to Chime and GM

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