Stealth Founders

Discovering tomorrow’s PayPal Mafia Today

Mar 27, 2026

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6 min read

3.27.26 - Top Founders of the Week

Kalshi’s 1st FTE, Anduril’s Chief Engineer, Shield AI's COO, Dreamer's CTO, and an Early Palantir Member.

Mar 25, 2026

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5 min read

3.26.26 - The Shield AI Mafia

Shield AI’s COO turned founder, Anduril’s former Chief Engineer, Tesla Cybertruck lead and Mach Industries build head, Founders Fund/Index-backed founding ML engineer, and a $100M Felicis-backed founder transitioning out of CEO

3.25.26 - Founding Members from Verily, Cape, Halter and a Repeat 8-Figure Founder

Mar 24, 2026

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5 min read

3.25.26 - Founding Members from Verily, Cape, Halter and a Repeat 8-Figure Founder

Verily's founding GM, a16z Bio Fund partner, $70M founder with Tempus exit, Lilac AI's 1st engineer (acquired by Databricks), Cape's founding SWE & 11-year Palantir tech lead, and the early Halter team

3.24.26 - A16Z-backed Founder, Post-Acquisition Founders from Amazon and Meta Deals, Plus Shepherd's Day-One Engineers

Mar 23, 2026

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5 min read

3.24.26 - A16Z-backed Founder, Post-Acquisition Founders from Amazon and Meta Deals, Plus Shepherd's Day-One Engineers

Fauna Robotics co-founder (NYU prof, ex-OpenAI) building in robotics again, Dreamer CTO and 3rd FTE now free agents, Shepherd's 1st FTEs, and repeat founders across Aviato, Riveter, and Daedalus

Mar 22, 2026

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5 min read

3.23.26 - The Kalshi Mafia

Kalshi’s 1st FTE, founding engineers behind the core trading product, former Chief of Staff, and a YC-backed repeat founder

Mar 20, 2026

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5 min read

3.20.26 - Top Founders of the Week

Repeat founder (prior exit), founding engineers behind Rox ($1.2B) and Sunday ($165M), plus YC and Z Fellows-backed founders

3.19.26 - Repeat Founder, ex GC-backed Founding Team, and an IOI Gold Medalist

Mar 18, 2026

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4 min read

3.19.26 - Repeat Founder, ex GC-backed Founding Team, and an IOI Gold Medalist

Posh's Co-Founder, Founding Members of Autoscience, MIT student with IOI gold medals, and key Arc operators

3.18.26 - Founding Operators from Paraform & Hanover Park

Mar 17, 2026

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4 min read

3.18.26 - Founding Operators from Paraform & Hanover Park

Paraform & Hanover Park founding operators, and early builders across Axiamatic, Grow Therapy, and Andromeda

3.17.26 - 3 Repeat Founders and Lightspeed & GV-backed Founding Engineers

Mar 16, 2026

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5 min read

3.17.26 - 3 Repeat Founders and Lightspeed & GV-backed Founding Engineers

Atlassian-acquired founder on his 4th act, co-founders of Tamarind Bio & DiligenceSquared, Quince’s CRO, and founding engineers from Gushwork & Translucent