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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
3.12.26 - The Replit & Forethought Mafias
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A16Z

3.12.26 - The Replit & Forethought Mafias

Replit’s 16th FTE, 1st designer, and Head of AI; Forethought’s founding engineer and co-founder
3.11.26 - Founding Members from Vast, Evervault, Rhoda, and Nitra
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Sequoia

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
3.10.26 - The Anduril Mafia Pt. 2
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Founders Fund

3.10.26 - The Anduril Mafia Pt. 2

Anduril’s Head of Mechanical Engineering, a 14-year SpaceX Director, Chief of Staff to the DoD Deputy Secretary, a YC founder exit, and early Anduril engineering leaders
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
3.6.26 - Top Founders of the Week
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Top Founders of the Week

3.6.26 - Top Founders of the Week

Repeat founders with $450M in Plaid exits, Mach CTO, Nylas founders ($160M raised), WorkOS-acquired founder, Flux CTO, and Encord's Co-Founder & Founding Engineer
3.5.26 - The Mach Industries Mafia
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Sequoia

3.5.26 - The Mach Industries Mafia

Former CTO, President, CISO, Founding Aerospace Engineer and other builders from Mach Industries.
3.4.26 - Nylas Co-Founders and WorkOS Builders
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Greenoaks

3.4.26 - Nylas Co-Founders and WorkOS Builders

Nylas Co-Founders ($160M raised), WorkOS & Aurora-acquired founders, YC W26 AI founder, and founding engineers from 14.ai & Smack Technologies
3.3.26 - The Plaid Mafia
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Repeat Founder

3.3.26 - The Plaid Mafia

$450M of Plaid exits, repeat founders backed by 8VC, Menlo & Abstract, two $90M+ executives, a YC W26 AI infra founder, and Plaid leaders across ML, Credit Engineering & Financial Products
3.2.26 - Flux & Encord Co-Founders + Founding Operators from Dots and Rowspace
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8VC

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
2.27.26 - Top Founders of the Week
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Top Founders of the Week

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
2.26.25 - The Stripe Mafia (Pt. 2)
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Sequoia

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
2.24.26 - The Stripe Mafia
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Sequoia

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

Repeat Founder

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7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer
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A16Z

7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer

Bunkerhill Health’s founding engineer, repeat 9-figure founders, Wonder’s founding and early team, and Deeptune’s #1 founding engineer.
7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders
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Neko

7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders

Hadrius’ early engineers founding two YC startups, Valarian’s former Co-Founder & COO and VP of Engineering reuniting, and Neko Health operators.
7.12.26 - Founding Scientist of Chai Discovery, Base Power Operators, and The Bending Spoons Mafia
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Base Power

7.12.26 - Founding Scientist of Chai Discovery, Base Power Operators, and The Bending Spoons Mafia

Chai Discovery's founding scientist, engineering and product leaders from Bending Spoons, and former Tesla, NVIDIA, and SpaceX talent building after Base Power.

Founding Engineer

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7.19.26 - Top Founders of the Week
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Top Founders of the Week

7.19.26 - Top Founders of the Week

Prime Intellect's founding research and protocol leaders, Helsing's AI directors, deployed engineers, and acquired founder, Shaped's co-founder following its Whatnot acquisition, Valarian's co-founders, TerraFirma's interim COO, and MicroAGI's co-founder.
7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia
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TerraFirma

7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia

Prime Intellect’s founding research and protocol engineers and Head of Product, TerraFirma’s early robotics and autonomy talent, MicroAGI’s co-founder, and Rime’s 1st FTE.
7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer
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A16Z

7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer

Bunkerhill Health’s founding engineer, repeat 9-figure founders, Wonder’s founding and early team, and Deeptune’s #1 founding engineer.

Repeat Founding Engineer

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7.19.26 - Top Founders of the Week
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Top Founders of the Week

7.19.26 - Top Founders of the Week

Prime Intellect's founding research and protocol leaders, Helsing's AI directors, deployed engineers, and acquired founder, Shaped's co-founder following its Whatnot acquisition, Valarian's co-founders, TerraFirma's interim COO, and MicroAGI's co-founder.
7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia
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TerraFirma

7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia

Prime Intellect’s founding research and protocol engineers and Head of Product, TerraFirma’s early robotics and autonomy talent, MicroAGI’s co-founder, and Rime’s 1st FTE.
7.15.26 - The Helsing Mafia
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Helsing

7.15.26 - The Helsing Mafia

Helsing-acquired founder, AI directors, deployed AI engineers, and product leaders building Europe's next generation of defense startups.

AI

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7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia
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TerraFirma

7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia

Prime Intellect’s founding research and protocol engineers and Head of Product, TerraFirma’s early robotics and autonomy talent, MicroAGI’s co-founder, and Rime’s 1st FTE.
7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer
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A16Z

7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer

Bunkerhill Health’s founding engineer, repeat 9-figure founders, Wonder’s founding and early team, and Deeptune’s #1 founding engineer.
6.29.26 - Menlo-Backed Founding Engineers, Hippocratic AI's Early Research Team, and Founders from Muon Space
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Assort Health

6.29.26 - Menlo-Backed Founding Engineers, Hippocratic AI's Early Research Team, and Founders from Muon Space

Founding engineers from Bland and Cadence, Hippocratic AI's early product research team, and former SpaceX, Zipline, and Muon Space engineering leaders

Applied AI

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7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer
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A16Z

7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer

Bunkerhill Health’s founding engineer, repeat 9-figure founders, Wonder’s founding and early team, and Deeptune’s #1 founding engineer.
7.13.26 - Top Founders of the Week
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Chai Discovery

7.13.26 - Top Founders of the Week

Early MTS hires from Etched, Chai Discovery's founding scientist, Together AI's founding engineering and research leaders, and CRED's founding product team.
7.6.26 - The Etched Mafia
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Etched

7.6.26 - The Etched Mafia

Etched's earliest MTS hires, YC-backed repeat founders, Stanford and MIT AI researchers, plus Taxwire's founding engineer and chief of staff.

Fintech

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7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders
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Neko

7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders

Hadrius’ early engineers founding two YC startups, Valarian’s former Co-Founder & COO and VP of Engineering reuniting, and Neko Health operators.
7.13.26 - Top Founders of the Week
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Chai Discovery

7.13.26 - Top Founders of the Week

Early MTS hires from Etched, Chai Discovery's founding scientist, Together AI's founding engineering and research leaders, and CRED's founding product team.
7.9.26 - Peregrine's Deployment Team & CRED's Founding Product Leaders
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Peregrine

7.9.26 - Peregrine's Deployment Team & CRED's Founding Product Leaders

Deployment leaders from Peregrine, CRED's founding product team and repeat founders, and an early Castelion engineer building the next defense prime.

Infrastructure

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6.18.26 - The Databricks Mafia
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Databricks

6.18.26 - The Databricks Mafia

Databricks product and engineering leaders, acquisition talent from MosaicML and Arcion, and founders building AI infrastructure, agents, and developer tools
6.9.26 - Founders Fund-backed founding engineers, a $100M founder, a YC-backed CTO, and repeat AI infrastructure leaders
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Founders Fund

6.9.26 - Founders Fund-backed founding engineers, a $100M founder, a YC-backed CTO, and repeat AI infrastructure leaders

Founding engineers from Founders Fund-backed Poetic, the former co-founder of Spin & Matchday, Stepful's YC-backed CTO, and NinjaOne's former CTO
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

Defense

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7.19.26 - Top Founders of the Week
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Top Founders of the Week

7.19.26 - Top Founders of the Week

Prime Intellect's founding research and protocol leaders, Helsing's AI directors, deployed engineers, and acquired founder, Shaped's co-founder following its Whatnot acquisition, Valarian's co-founders, TerraFirma's interim COO, and MicroAGI's co-founder.
7.15.26 - The Helsing Mafia
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Helsing

7.15.26 - The Helsing Mafia

Helsing-acquired founder, AI directors, deployed AI engineers, and product leaders building Europe's next generation of defense startups.
7.9.26 - Peregrine's Deployment Team & CRED's Founding Product Leaders
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Peregrine

7.9.26 - Peregrine's Deployment Team & CRED's Founding Product Leaders

Deployment leaders from Peregrine, CRED's founding product team and repeat founders, and an early Castelion engineer building the next defense prime.

Biotech

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6.8.26 - Top Founders of the Week
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Top Founders of the Week

6.8.26 - Top Founders of the Week

The co-founders of Luma AI, Liftoff, Basis, Lila Sciences, Forage, Impulse Space's COO and first technical hire, and founders acquired by DriveNets
6.4.26 - Lila’s Co-Founder & 1st Employee, $175M Founder & Generalist AI COO, and Forage’s Founding Team
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Lilia Sciences

6.4.26 - Lila’s Co-Founder & 1st Employee, $175M Founder & Generalist AI COO, and Forage’s Founding Team

Lila Sciences’ co-founder and first employee, the founder of Nylas and COO of Generalist AI, plus founders, first hires, and executives from Forage
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

Healthcare

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7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer
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A16Z

7.16.26 - Khosla-Backed Founding Engineer, Repeat 9-Figure Founders & Deeptune’s 1st Engineer

Bunkerhill Health’s founding engineer, repeat 9-figure founders, Wonder’s founding and early team, and Deeptune’s #1 founding engineer.
7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders
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Neko

7.14.26 - NEA-Backed Founder in Stealth, Founding Engineers of Hadrius, and Neko Growth Leaders

Hadrius’ early engineers founding two YC startups, Valarian’s former Co-Founder & COO and VP of Engineering reuniting, and Neko Health operators.
6.29.26 - Menlo-Backed Founding Engineers, Hippocratic AI's Early Research Team, and Founders from Muon Space
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Assort Health

6.29.26 - Menlo-Backed Founding Engineers, Hippocratic AI's Early Research Team, and Founders from Muon Space

Founding engineers from Bland and Cadence, Hippocratic AI's early product research team, and former SpaceX, Zipline, and Muon Space engineering leaders

Crypto

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6.11.26 - The Mistral Mafia
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Mistral

6.11.26 - The Mistral Mafia

Mistral's former Chief Business Officer, researchers from OpenAI and DeepMind, a healthcare AI founder from Morpho, and repeat engineering leaders behind multiple acquisitions
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

Cybersecurity

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6.11.26 - The Mistral Mafia
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Mistral

6.11.26 - The Mistral Mafia

Mistral's former Chief Business Officer, researchers from OpenAI and DeepMind, a healthcare AI founder from Morpho, and repeat engineering leaders behind multiple acquisitions
6.8.26 - Top Founders of the Week
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Top Founders of the Week

6.8.26 - Top Founders of the Week

The co-founders of Luma AI, Liftoff, Basis, Lila Sciences, Forage, Impulse Space's COO and first technical hire, and founders acquired by DriveNets
6.5.26 - 9 Figure Repeat Founder, Founders of Opals, and Zyphra Engineering Executives
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Greylock

6.5.26 - 9 Figure Repeat Founder, Founders of Opals, and Zyphra Engineering Executives

A $133M founder, Opal's co-founder, CTO, and CPO, engineering executives from Zyphra, and builders behind exits to Airwallex, Harness, and Salesforce

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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7.19.26 - Top Founders of the Week
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Top Founders of the Week

7.19.26 - Top Founders of the Week

Prime Intellect's founding research and protocol leaders, Helsing's AI directors, deployed engineers, and acquired founder, Shaped's co-founder following its Whatnot acquisition, Valarian's co-founders, TerraFirma's interim COO, and MicroAGI's co-founder.
7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia
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TerraFirma

7.18.26 - Prime Intellect’s Founding Team & The TerraFirma Mafia

Prime Intellect’s founding research and protocol engineers and Head of Product, TerraFirma’s early robotics and autonomy talent, MicroAGI’s co-founder, and Rime’s 1st FTE.
6.15.26 - Top Founders of the Week
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Top Founders of the Week

6.15.26 - Top Founders of the Week

Ex DeepMind Researchers Leaving Mistral, Founders Behind a $100M Exit and a 9-Figure Company, and Founding Engineers from Poetic

American Dynamism

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7.12.26 - Founding Scientist of Chai Discovery, Base Power Operators, and The Bending Spoons Mafia
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Base Power

7.12.26 - Founding Scientist of Chai Discovery, Base Power Operators, and The Bending Spoons Mafia

Chai Discovery's founding scientist, engineering and product leaders from Bending Spoons, and former Tesla, NVIDIA, and SpaceX talent building after Base Power.
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