Get Access

Discovering Tomorrow's PayPal Mafia Today

Highlighting founders emerging from top startups

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

Top Posts

View all
4.7.26 - SpaceX Mafia Pt. 2
Members Only
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
Members Only
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
Members Only
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
6.3.26 – Impulse Space Executive & 1st Technical Hire, DriveNets-Acquired Founders, and a Legora-Acquired Founding Engineer
Members Only
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
Members Only
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
Members Only
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
Members Only
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
5.27.26 - The Tenstorrent & Fireworks AI Mafias
Members Only
Index

5.27.26 - The Tenstorrent & Fireworks AI Mafias

Tenstorrent co-founders and acquired chip founders, GTM leadership from Fireworks AI, and VP product leadership from Vi
5.25.26 - Top Founders of the Week
Members Only
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
Members Only
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
5.20.26 - The Exa & Modal Mafias
Members Only
Modal

5.20.26 - The Exa & Modal Mafias

Exa leadership from OpenAI, xAI, and Perplexity, plus YC-backed founders and early engineering talent from Modal
5.19.26 - Khosla-Backed Founder and Founding Members of SiMa & Conversion
Members Only
Fragile

5.19.26 - Khosla-Backed Founder and Founding Members of SiMa & Conversion

Co-Founder and President of Fragile, an 8-figure stealth founder & founding team member from SiMa.ai, and Conversion’s 1st FTE
5.18.26 - Decart Executives, Dust & Nourish Founding Engineers, and YC-Backed AI Founders from Sigma Computing
Members Only
Decart

5.18.26 - Decart Executives, Dust & Nourish Founding Engineers, and YC-Backed AI Founders from Sigma Computing

Decart executives, Dust and Nourish founding engineers, and Sigma Computing talent including a Sutter Hill Codepoint Fellow and YC-backed AI founders
5.15.26 - Top Founders of the Week
Members Only
Top Founders of the Week

5.15.26 - Top Founders of the Week

Founding leadership from Isomorphic Labs, senior engineers from Vapi and Helsing, and Turnkey’s co-founder and ex-Coinbase Custody product lead
5.14.26 - Sequoia-Backed Founder, Repeat YC Founders, and Nectar Social’s 1st Engineer
Members Only
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

Repeat Founder

View all
6.2.26 - Top Founders of the Week
Members Only
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
Members Only
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
Members Only
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

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

View all
5.10.26 - Top Founders of the Week
Members Only
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
Members Only
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
Members Only
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

View all
6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
Members Only
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
Members Only
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
Members Only
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

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

View all
5.10.26 - Top Founders of the Week
Members Only
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
Members Only
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
Members Only
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

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

View all
6.1.26 – Founders & Founding Operators from Sekai, Fonoa, StackAI, and Portkey
Members Only
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
Members Only
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
Members Only
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

View all
4.10.26 - Top Founders of the Week
Members Only
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
Members Only
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
Members Only
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

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

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

View all
3.26.26 - The Shield AI Mafia
Members Only
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
Members Only
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
Members Only
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

View all
4.22.26 - Skydio Early Autonomy Engineers, DeepMind Researcher, Ex YC Founder
Members Only
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
Members Only
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

View all
4.26.26 - Top Founders of the Week
Members Only
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
Members Only
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
Members Only
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

View all
5.7.26 - The Astranis Mafia & Corgi’s Founding Team
Members Only
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
Members Only
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
Members Only
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