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Discovering Tomorrow's PayPal Mafia Today

Highlighting founders emerging from top startups

Read by investors managing $100B+ AUM. Limited to 200 members.

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4.7.26 - SpaceX Mafia Pt. 2
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Top Posts

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
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SpaceX

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
3.30.26 - The Physical Intelligence & Mistral Mafia
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Early Team

3.30.26 - The Physical Intelligence & Mistral Mafia

Founding MTS @ Physical Intelligence, Mistral Founding Member, Anduril early SF engineer, Mistral researchers from DeepMind, OpenAI, and Meta FAIR (Llama), and a founding team member from Bessemer-backed Sett
5.13.26 - The Vapi Mafia & Fractile Founders
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Fractile

5.13.26 - The Vapi Mafia & Fractile Founders

Vapi founding and senior engineering talent, plus AI hardware and chip-design founders from Fractile
5.12.26 - The Isomorphic Mafia
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Thrive Capital

5.12.26 - The Isomorphic Mafia

Founding leadership, staff researchers, and AI infrastructure talent from Isomorphic Labs
5.11.26 - The Helsing Mafia
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Lightspeed

5.11.26 - The Helsing Mafia

Acquired founders and senior AI operators from Helsing, plus early Moonshot AI product and engineering talent
5.10.26 - Top Founders of the Week
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Top Founders of the Week

5.10.26 - Top Founders of the Week

Sierra early team, Suno’s co-founder, Enter founding team, and Corgi’s founding engineers
5.7.26 - The Astranis Mafia & Corgi’s Founding Team
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Founding Engineer

5.7.26 - The Astranis Mafia & Corgi’s Founding Team

Astranis engineering, avionics, security, and Office of CTO leaders, plus Corgi’s founding team building GPU financing infrastructure
5.6.26 - The Enter Mafia, Suno’s Co-Founder, and Vori’s Founding Engineer
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Menlo Ventures

5.6.26 - The Enter Mafia, Suno’s Co-Founder, and Vori’s Founding Engineer

Suno’s co-founder, Enter founding team and AI deployment leaders, Vori’s founding engineer, and a former YC founder from Nova Intelligence
5.5.26 - The Sierra Mafia
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GV

5.5.26 - The Sierra Mafia

Early Sierra engineers and researchers, including Quip alumni, YC founders, and former Scale AI and Google engineers
5.4.26 - The Cognition Mafia
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Cognition

5.4.26 - The Cognition Mafia

Iterative founding team, CPO, and Komodo leaders, plus Cognition engineers and Windsurf alumni with Jane Street, Neo, Five Rings, and IOI backgrounds
5.1.26 - Top Founders of the Week
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Top Founders of the Week

5.1.26 - Top Founders of the Week

Founding engineers from Parallel and Rogo, True Anomaly’s Chief Engineer, Legora’s 1st FTE, and Actively’s first engineer
4.30.26 - Fun Co-Founder & Founding Engineers, and Spring Health & Alma Leaders
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Repeat Founder

4.30.26 - Fun Co-Founder & Founding Engineers, and Spring Health & Alma Leaders

Spring Health/Alma SVP, CTO, and CPO leaders, and Fun co-founder, interim CTO, and founding engineers
4.29.26 - Legora’s 1st FTEs, Skio Founding Engineer, and Early Standard Intelligence Talent
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Legora

4.29.26 - Legora’s 1st FTEs, Skio Founding Engineer, and Early Standard Intelligence Talent

Legora’s 1st FTE and country heads, Skio’s founding engineer, and early MTS from Standard Intelligence
4.28.26 – Parallel Founding Engineer, Rogo’s 1st FTE, and an a16z-Backed Founder
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Sequoia

4.28.26 – Parallel Founding Engineer, Rogo’s 1st FTE, and an a16z-Backed Founder

Repeat Founder

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6.2.26 - Top Founders of the Week
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Top Founders of the Week

6.2.26 - Top Founders of the Week

The founder of Tenstorrent, Volta’s founder-CEO, a Baseten founding engineer, and AI infrastructure talent from Fireworks and Pax AI
6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
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Sekai

6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey

Sekai and Fonoa co-founders, StackAI founding engineers, and early GTM leadership from Portkey
5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy
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Baseten

5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy

Garner's 1st FTE and executive leadership, Baseten's founding engineer, Focused Energy's former CEO, and senior operators from MaintainX and Trajectory

Founding Engineer

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6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer
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Bessemer

6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer

SpaceX and Tesla talent from Impulse Space, founders acquired by DriveNets, architecture leaders from Cyera, and security executives from Contentful
6.2.26 - Top Founders of the Week
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Top Founders of the Week

6.2.26 - Top Founders of the Week

The founder of Tenstorrent, Volta’s founder-CEO, a Baseten founding engineer, and AI infrastructure talent from Fireworks and Pax AI
6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
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Sekai

6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey

Sekai and Fonoa co-founders, StackAI founding engineers, and early GTM leadership from Portkey

Repeat Founding Engineer

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5.10.26 - Top Founders of the Week
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Top Founders of the Week

5.10.26 - Top Founders of the Week

Sierra early team, Suno’s co-founder, Enter founding team, and Corgi’s founding engineers
4.30.26 - Fun Co-Founder & Founding Engineers, and Spring Health & Alma Leaders
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Repeat Founder

4.30.26 - Fun Co-Founder & Founding Engineers, and Spring Health & Alma Leaders

Spring Health/Alma SVP, CTO, and CPO leaders, and Fun co-founder, interim CTO, and founding engineers
4.16.26 - The Resolve AI Mafia & A16Z-backed Founder & First Engineer
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A16Z

4.16.26 - The Resolve AI Mafia & A16Z-backed Founder & First Engineer

Pillar’s Co-Founder & CEO and first engineer, early engineers from Resolve AI, and Slate Auto’s Head of Automotive Software (ex-Tesla Director) turned founder

AI

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6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
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Sekai

6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey

Sekai and Fonoa co-founders, StackAI founding engineers, and early GTM leadership from Portkey
5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy
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Baseten

5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy

Garner's 1st FTE and executive leadership, Baseten's founding engineer, Focused Energy's former CEO, and senior operators from MaintainX and Trajectory
5.25.26 - Top Founders of the Week
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Top Founders of the Week

5.25.26 - Top Founders of the Week

Founders from Exa, Commure, and Fragile, plus executives and early employees from Decart, Modal, Conversion, and Nourish

Applied AI

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6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer
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Bessemer

6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer

SpaceX and Tesla talent from Impulse Space, founders acquired by DriveNets, architecture leaders from Cyera, and security executives from Contentful
5.21.26 - Commure’s Co-Founder, Radar's CTO, and Hark’s Founding Team Member
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Sequoia

5.21.26 - Commure’s Co-Founder, Radar's CTO, and Hark’s Founding Team Member

Commure founders and operators including its co-founder & CTO, YC-backed healthcare AI founders, RADAR’s CTO, and Hark founding team members
5.1.26 - Top Founders of the Week
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Top Founders of the Week

5.1.26 - Top Founders of the Week

Founding engineers from Parallel and Rogo, True Anomaly’s Chief Engineer, Legora’s 1st FTE, and Actively’s first engineer

Fintech

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5.10.26 - Top Founders of the Week
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Top Founders of the Week

5.10.26 - Top Founders of the Week

Sierra early team, Suno’s co-founder, Enter founding team, and Corgi’s founding engineers
5.7.26 - The Astranis Mafia & Corgi’s Founding Team
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Founding Engineer

5.7.26 - The Astranis Mafia & Corgi’s Founding Team

Astranis engineering, avionics, security, and Office of CTO leaders, plus Corgi’s founding team building GPU financing infrastructure
5.1.26 - Top Founders of the Week
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Top Founders of the Week

5.1.26 - Top Founders of the Week

Founding engineers from Parallel and Rogo, True Anomaly’s Chief Engineer, Legora’s 1st FTE, and Actively’s first engineer

Infrastructure

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6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer
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Bessemer

6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer

SpaceX and Tesla talent from Impulse Space, founders acquired by DriveNets, architecture leaders from Cyera, and security executives from Contentful
4.16.26 - The Resolve AI Mafia & A16Z-backed Founder & First Engineer
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A16Z

4.16.26 - The Resolve AI Mafia & A16Z-backed Founder & First Engineer

Pillar’s Co-Founder & CEO and first engineer, early engineers from Resolve AI, and Slate Auto’s Head of Automotive Software (ex-Tesla Director) turned founder
4.13.26 - $2.5B Founder, $50M+ Exit Founder, and Starfish Chief Engineer
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Function Health

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

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

Defense

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6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
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Sekai

6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey

Sekai and Fonoa co-founders, StackAI founding engineers, and early GTM leadership from Portkey
5.11.26 - The Helsing Mafia
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Lightspeed

5.11.26 - The Helsing Mafia

Acquired founders and senior AI operators from Helsing, plus early Moonshot AI product and engineering talent
3.9.26 - The Anduril Mafia
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Founders Fund

3.9.26 - The Anduril Mafia

Anduril Chief Engineer, Mach Industries CTO, Founding MTS at Physical Intelligence, and other Anduril engineering leaders from SpaceX, CIA, and Uber ATG

Biotech

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4.10.26 - Top Founders of the Week
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Top Founders of the Week

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
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Healthcare

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

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

Healthcare

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5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy
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Baseten

5.31.26 - Founding Operators from Garner & Baseten, and the Former CEO of Focused Energy

Garner's 1st FTE and executive leadership, Baseten's founding engineer, Focused Energy's former CEO, and senior operators from MaintainX and Trajectory
5.25.26 - Top Founders of the Week
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Top Founders of the Week

5.25.26 - Top Founders of the Week

Founders from Exa, Commure, and Fragile, plus executives and early employees from Decart, Modal, Conversion, and Nourish
5.21.26 - Commure’s Co-Founder, Radar's CTO, and Hark’s Founding Team Member
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Sequoia

5.21.26 - Commure’s Co-Founder, Radar's CTO, and Hark’s Founding Team Member

Commure founders and operators including its co-founder & CTO, YC-backed healthcare AI founders, RADAR’s CTO, and Hark founding team members

Crypto

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5.14.26 - Sequoia-Backed Founder, Repeat YC Founders, and Nectar Social’s 1st Engineer
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Founder

5.14.26 - Sequoia-Backed Founder, Repeat YC Founders, and Nectar Social’s 1st Engineer

Turnkey’s co-founder and ex-Coinbase Custody product lead, repeat YC founders acquired by Multiverse, Nectar Social’s 1st engineer, and Exaforce’s engineering lead
4.27.26 - True Anomaly Executives, Actively’s Founding Engineer, and Manus AI Fellows
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Founding Engineer

4.27.26 - True Anomaly Executives, Actively’s Founding Engineer, and Manus AI Fellows

Early engineers and leadership from True Anomaly, Actively’s first engineer, repeat founder & quant from Liquid, and Manus AI fellows
3.18.26 - Founding Operators from Paraform & Hanover Park
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Scale

3.18.26 - Founding Operators from Paraform & Hanover Park

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

Cybersecurity

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3.26.26 - The Shield AI Mafia
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A16Z

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
2.4.26 - Repeat Founders with $200M Exit, USV-Backed Founder, and Celestial AI's CTO
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Founding Engineer

2.4.26 - Repeat Founders with $200M Exit, USV-Backed Founder, and Celestial AI's CTO

Repeat founders from the Day AI founder’s prior startup, a USV-backed founder, Celestial AI's CTO, and early builders from Uptool, Kindred, and Claroty.
1.14.26 - The Etched Mafia
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Founder

1.14.26 - The Etched Mafia

Senior MTS and founding ML scientists from Etched, defense AI founders from Harmattan, and early product and AI leaders emerging from Aikido Security and Converge Bio.

SaaS

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4.22.26 - Skydio Early Autonomy Engineers, DeepMind Researcher, Ex YC Founder
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A16Z

4.22.26 - Skydio Early Autonomy Engineers, DeepMind Researcher, Ex YC Founder

Skydio early autonomy engineers, a GNC Lead from Reliable Robotics, Monk’s founding engineers, DeepMind / Google Brain Researcher, and ex-YC Founder
3.18.26 - Founding Operators from Paraform & Hanover Park
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Scale

3.18.26 - Founding Operators from Paraform & Hanover Park

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

Robotics

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4.26.26 - Top Founders of the Week
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Top Founders of the Week

4.26.26 - Top Founders of the Week

Cursor co-founder and early engineers, Cohere’s CPO, a repeat founder from Polymarket, and Skydio early engineers
4.22.26 - Skydio Early Autonomy Engineers, DeepMind Researcher, Ex YC Founder
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A16Z

4.22.26 - Skydio Early Autonomy Engineers, DeepMind Researcher, Ex YC Founder

Skydio early autonomy engineers, a GNC Lead from Reliable Robotics, Monk’s founding engineers, DeepMind / Google Brain Researcher, and ex-YC Founder
4.5.26 - Top Founders of the Week
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Top Founders of the Week

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

American Dynamism

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5.7.26 - The Astranis Mafia & Corgi’s Founding Team
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Founding Engineer

5.7.26 - The Astranis Mafia & Corgi’s Founding Team

Astranis engineering, avionics, security, and Office of CTO leaders, plus Corgi’s founding team building GPU financing infrastructure
5.1.26 - Top Founders of the Week
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Top Founders of the Week

5.1.26 - Top Founders of the Week

Founding engineers from Parallel and Rogo, True Anomaly’s Chief Engineer, Legora’s 1st FTE, and Actively’s first engineer
4.27.26 - True Anomaly Executives, Actively’s Founding Engineer, and Manus AI Fellows
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Founding Engineer

4.27.26 - True Anomaly Executives, Actively’s Founding Engineer, and Manus AI Fellows

Early engineers and leadership from True Anomaly, Actively’s first engineer, repeat founder & quant from Liquid, and Manus AI fellows