Members Only
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.
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3.18.26 - Founding Operators from Paraform & Hanover Park
Paraform & Hanover Park founding operators, and early builders across Axiamatic, Grow Therapy, and Andromeda
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3.11.26 - Founding Members from Vast, Evervault, Rhoda, and Nitra
A Starlink Director, Vast’s first employee, Wayve’s Head of Simulation, and early builders from Rhoda AI and Evervault
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3.5.26 - The Mach Industries Mafia
Former CTO, President, CISO, Founding Aerospace Engineer and other builders from Mach Industries.
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3.2.26 - Flux & Encord Co-Founders + Founding Operators from Dots and Rowspace
Co-Founders & COO / CTO of Flux; Encord Co-Founder & CTO; Dots’ 1st FTE & Founding Engineer; and Rowspace’s 6th FTE
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2.27.26 - Top Founders of the Week
Co-Founders of Cursor, Freeform, Fluidstack, Orum; creators of Stripe Checkout/Atlas/Connect/Dashboard; Playco CTO & Statsig founding engineer
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2.26.25 - The Stripe Mafia (Pt. 2)
Stripe-acquired repeat founder, CISO, Head of AI Development; Notion's 5th engineer; Anthropic and OpenAI alums; and 10+ repeat founders backed by Index, GC, and YC
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2.24.26 - The Stripe Mafia
20+ repeat founders, Stripe's GM for Connect & Global Payments (ran 90% of P&L); Head of Applied ML; creators of Checkout, Atlas, Dashboard & Corporate Card
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2.20.26 - Top Founders of the Week
Head of ML at PolyAI, Stash’s co-founder post-sale, Lily Robotics and Jyve repeat founders, and Grafana’s post-acquisition builders
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2.17.26 - PolyAI’s COO, a Repeat YC Founder, and Senior Talent from Braintrust & Temporal
PolyAI’s COO and Head of ML, Temporal’s product and engineering leads, Braintrust's Head of Biz Ops, plus a 7-year DeepMind researcher now building in robotics.
Members Only
2.16.26 - Repeat Founders from Stash, Grafana, Sante, and Lily Robotics
Serial founders with $425M and $70M outcomes, two-time acquired DevOps leaders now funded again, and founding AI teams from Anterior and Didero
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