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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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8.30.26 - Top Founders of the Week
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Top Founders of the Week

8.30.26 - Top Founders of the Week

Perplexity’s earliest engineers and acquired founders, Blue Origin’s original team and SpaceX veterans, plus Hugging Face’s founding research crew and research leads spinning out.
8.24.26 - The Perplexity Mafia
Members Only
Perplexity

8.24.26 - The Perplexity Mafia

Perplexity’s Comet browser builders, 1st SWE & growth engineer, consumer experience lead, and acquired founders leaving to build new AI, agent, robotics, and consumer startups.
8.14.26 - Top Founders of the Week
Members Only
Top Founders of the Week

8.14.26 - Top Founders of the Week

10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff
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A16Z

10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff

Flow’s 1st FTE, Volantis founding engineering, Efficient Computer’s Head of Product, and EliseAI technical and operating leaders spinning out.
10.2.26 - Top Founders of the Week
Members Only
Top Founders of the Week

10.2.26 - Top Founders of the Week

Parafin’s Co-Founder & founding engineer, Varda’s founding CRO and hardware talent, Monzo’s early architecture leaders, and Flow’s 1st FTE spinning out.
9.30.26 - The Varda Space Mafia
Members Only
Lux

9.30.26 - The Varda Space Mafia

Founding team members from Varda and Physical Intelligence, SpaceX and Anduril hardware leaders, repeat founders, and aerospace engineers spinning out into AI and robotics.
9.29.26 - The Parafin Mafia
Members Only
Parafin

9.29.26 - The Parafin Mafia

Parafin’s Co-Founder, founding engineer, 1st product hire, and capital engineering leaders spinning out into fintech and AI startups.
9.28.26 - The Monzo Mafia
Members Only
Monzo

9.28.26 - The Monzo Mafia

Monzo’s early architecture and US engineering leaders, Revolut’s 4th FTE, and fraud talent spinning out into AI, fintech and security startups.
9.25.26 - Top Founders of the Week
Members Only
Top Founders of the Week

9.25.26 - Top Founders of the Week

Baseten and Ema leaders, Snorkel AI’s ML and engineering talent, Ando’s founding engineers, Modal’s early technical team, and an acquired Quartermaster founder spinning out.
9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders
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SiMa

9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders

SiMa.ai founding talent, an acquired maritime-tech founder, and Cyera architecture, engineering and Unit 8200 leaders spinning out.
9.22.26 - The Baseten Mafia & an Accel-Backed Co-Founder
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Accel

9.22.26 - The Baseten Mafia & an Accel-Backed Co-Founder

Baseten engineers, a Thrive-backed founder, and Ema’s departing Co-Founder & CTO building across robotics and voice AI
9.23.26 - The Modal Mafia & Ando’s Founding Engineers
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Accel

9.23.26 - The Modal Mafia & Ando’s Founding Engineers

Ando’s 1st FTE and founding engineers, alongside Modal’s early MTS and FDE talent spinning out.
9.21.26 - The Snorkel AI Mafia
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Snorkel AI

9.21.26 - The Snorkel AI Mafia

Together AI’s Founding VP of Engineering, ex-OpenAI & DeepMind engineers, and Snorkel’s founding product team spinning out across AI infrastructure, healthcare, sales and design.
9.18.26 - Top Founders of the Week
Members Only
Top Founders of the Week

9.18.26 - Top Founders of the Week

ElevenLabs’ Voice Agents Lead, Greylock-Backed Physical AI Co-Founder, Open-Weight AI Unicorn Co-Founder, Rainmaker’s 1st FTE & Chief Scientist, and Thatch’s 15th FTE
9.17.26 - The Rainmaker Mafia
Members Only
Lowercarbon

9.17.26 - The Rainmaker Mafia

Rainmaker’s 1st employee & Chief of Staff, Chief Science Officer, Head of Manufacturing and special projects leaders spinning out, including an Anduril alum building next-gen energy turbomachinery

Repeat Founder

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10.2.26 - Top Founders of the Week
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Top Founders of the Week

10.2.26 - Top Founders of the Week

Parafin’s Co-Founder & founding engineer, Varda’s founding CRO and hardware talent, Monzo’s early architecture leaders, and Flow’s 1st FTE spinning out.
9.30.26 - The Varda Space Mafia
Members Only
Lux

9.30.26 - The Varda Space Mafia

Founding team members from Varda and Physical Intelligence, SpaceX and Anduril hardware leaders, repeat founders, and aerospace engineers spinning out into AI and robotics.
9.28.26 - The Monzo Mafia
Members Only
Monzo

9.28.26 - The Monzo Mafia

Monzo’s early architecture and US engineering leaders, Revolut’s 4th FTE, and fraud talent spinning out into AI, fintech and security startups.

Founding Engineer

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10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff
Members Only
A16Z

10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff

Flow’s 1st FTE, Volantis founding engineering, Efficient Computer’s Head of Product, and EliseAI technical and operating leaders spinning out.
10.2.26 - Top Founders of the Week
Members Only
Top Founders of the Week

10.2.26 - Top Founders of the Week

Parafin’s Co-Founder & founding engineer, Varda’s founding CRO and hardware talent, Monzo’s early architecture leaders, and Flow’s 1st FTE spinning out.
9.29.26 - The Parafin Mafia
Members Only
Parafin

9.29.26 - The Parafin Mafia

Parafin’s Co-Founder, founding engineer, 1st product hire, and capital engineering leaders spinning out into fintech and AI startups.

Repeat Founding Engineer

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10.2.26 - Top Founders of the Week
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Top Founders of the Week

10.2.26 - Top Founders of the Week

Parafin’s Co-Founder & founding engineer, Varda’s founding CRO and hardware talent, Monzo’s early architecture leaders, and Flow’s 1st FTE spinning out.
9.30.26 - The Varda Space Mafia
Members Only
Lux

9.30.26 - The Varda Space Mafia

Founding team members from Varda and Physical Intelligence, SpaceX and Anduril hardware leaders, repeat founders, and aerospace engineers spinning out into AI and robotics.
9.29.26 - The Parafin Mafia
Members Only
Parafin

9.29.26 - The Parafin Mafia

Parafin’s Co-Founder, founding engineer, 1st product hire, and capital engineering leaders spinning out into fintech and AI startups.

AI

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9.23.26 - The Modal Mafia & Ando’s Founding Engineers
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Accel

9.23.26 - The Modal Mafia & Ando’s Founding Engineers

Ando’s 1st FTE and founding engineers, alongside Modal’s early MTS and FDE talent spinning out.
9.18.26 - Top Founders of the Week
Members Only
Top Founders of the Week

9.18.26 - Top Founders of the Week

ElevenLabs’ Voice Agents Lead, Greylock-Backed Physical AI Co-Founder, Open-Weight AI Unicorn Co-Founder, Rainmaker’s 1st FTE & Chief Scientist, and Thatch’s 15th FTE
9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers
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Greylock

9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers

Antioch’s co-founder, Factory’s AI infrastructure and technical talent, Savvy Wealth’s founding and 6th engineers, plus early Clarion and Manus builders launching newcos.

Applied AI

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10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff
Members Only
A16Z

10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff

Flow’s 1st FTE, Volantis founding engineering, Efficient Computer’s Head of Product, and EliseAI technical and operating leaders spinning out.
9.22.26 - The Baseten Mafia & an Accel-Backed Co-Founder
Members Only
Accel

9.22.26 - The Baseten Mafia & an Accel-Backed Co-Founder

Baseten engineers, a Thrive-backed founder, and Ema’s departing Co-Founder & CTO building across robotics and voice AI
9.18.26 - Top Founders of the Week
Members Only
Top Founders of the Week

9.18.26 - Top Founders of the Week

ElevenLabs’ Voice Agents Lead, Greylock-Backed Physical AI Co-Founder, Open-Weight AI Unicorn Co-Founder, Rainmaker’s 1st FTE & Chief Scientist, and Thatch’s 15th FTE

Fintech

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9.29.26 - The Parafin Mafia
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Parafin

9.29.26 - The Parafin Mafia

Parafin’s Co-Founder, founding engineer, 1st product hire, and capital engineering leaders spinning out into fintech and AI startups.
9.28.26 - The Monzo Mafia
Members Only
Monzo

9.28.26 - The Monzo Mafia

Monzo’s early architecture and US engineering leaders, Revolut’s 4th FTE, and fraud talent spinning out into AI, fintech and security startups.
9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers
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Greylock

9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers

Antioch’s co-founder, Factory’s AI infrastructure and technical talent, Savvy Wealth’s founding and 6th engineers, plus early Clarion and Manus builders launching newcos.

Infrastructure

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9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders
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SiMa

9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders

SiMa.ai founding talent, an acquired maritime-tech founder, and Cyera architecture, engineering and Unit 8200 leaders spinning out.
9.4.26 - SoftBank-Backed Co-Founder & Early Engineer + $30B Crusoe’s VP Eng & Infra Leaders
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Crusoe

9.4.26 - SoftBank-Backed Co-Founder & Early Engineer + $30B Crusoe’s VP Eng & Infra Leaders

Unacademy’s co-founder & CTO and early technical talent, alongside Crusoe’s VP Engineering, cloud infrastructure director and distributed computing engineers building new AI infrastructure companies.
8.20.26 - Paradigm’s 1st Employee, Partners & VP Eng + Early Heroku, Privy & Multiverse Leaders
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Benchmark

8.20.26 - Paradigm’s 1st Employee, Partners & VP Eng + Early Heroku, Privy & Multiverse Leaders

Paradigm’s 1st employee, research and investment partners, and VP Engineering, alongside Heroku’s 1st engineer, Privy’s 2nd FTE & founding engineer, and Multiverse Computing’s former COO.

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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7.31.26 - Function’s Co-Founding CTO, Antora’s CFO & Sequoia-Backed Summer Health Co-Founder
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A16Z

7.31.26 - Function’s Co-Founding CTO, Antora’s CFO & Sequoia-Backed Summer Health Co-Founder

Function Health’s Co-Founding CTO, Antora’s CFO and 5th commercial hire, the Co-Founder of Lux- and Sequoia-backed Summer Health, and Sail Biomedicines’ Chief Scientific Officer
7.28.26 - Top Founders of the Week
Members Only
Top Founders of the Week

7.28.26 - Top Founders of the Week

Co-Founders of Chainguard, Fluidstack & Colossal Biosciences, plus OpenSea’s former CTO and early employees & GMs from Atoms
7.26.26 - Co-Founders of Fluidstack’s Co-Founders & Colossal Biosciences
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Fluidstack

7.26.26 - Co-Founders of Fluidstack’s Co-Founders & Colossal Biosciences

Fluidstack’s co-founders, VP and directors of infrastructure and power systems; plus Colossal’s co-founder/CBO, Head of Biological Sciences, hardware director, and AI, computational biology, and stem-cell talent.

Healthcare

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9.18.26 - Top Founders of the Week
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Top Founders of the Week

9.18.26 - Top Founders of the Week

ElevenLabs’ Voice Agents Lead, Greylock-Backed Physical AI Co-Founder, Open-Weight AI Unicorn Co-Founder, Rainmaker’s 1st FTE & Chief Scientist, and Thatch’s 15th FTE
9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers
Members Only
Greylock

9.15.26- Greylock-Backed Physical AI Co-Founder + Factory AI Infra Head & Savvy Wealth Founding Engineers

Antioch’s co-founder, Factory’s AI infrastructure and technical talent, Savvy Wealth’s founding and 6th engineers, plus early Clarion and Manus builders launching newcos.
9.14.26 - Open-Weight AI Unicorn Founder, Thatch’s 15th FTE, and Adaptive’s Founding Product Head
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A16Z

9.14.26 - Open-Weight AI Unicorn Founder, Thatch’s 15th FTE, and Adaptive’s Founding Product Head

Arcee AI’s co-founder & CTO and Head of AI Engineering, Thatch’s early engineer and platforms GTM lead, plus Adaptive’s founding Head of Product & Strategy building again.

Crypto

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8.21.26 - Top Founders of the Week
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Top Founders of the Week

8.21.26 - Top Founders of the Week

Simile’s 1st hire and 5th MTS, Gravis Robotics’ co-founder, Higgsfield’s founding research talent, Fish Audio’s co-founders and founding engineer, Neros’ former COO, and Paradigm’s 1st employee & GP.
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

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
Members Only
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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9.10.26 Top Founders of the Week
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Top Founders of the Week

9.10.26 Top Founders of the Week

Cognition’s engineers and researchers, Clay’s 1st and 5th employees, Wonderful’s former GM & Lokalise founder, and Unacademy’s co-founder & CTO starting new
8.31.26 - The Clay Mafia
Members Only
SaaS

8.31.26 - The Clay Mafia

Clay’s 1st and 5th employees, 1st marketing hire, early growth and engineering leaders spinning out to build across AI, fintech, healthcare, and physical sciences.
8.4.26 - The Airtable Mafia
Members Only
Airtable

8.4.26 - The Airtable Mafia

Former Airtable CTOs, GMs, founding leaders, and acquired founders.

Robotics

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8.21.26 - Top Founders of the Week
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Top Founders of the Week

8.21.26 - Top Founders of the Week

Simile’s 1st hire and 5th MTS, Gravis Robotics’ co-founder, Higgsfield’s founding research talent, Fish Audio’s co-founders and founding engineer, Neros’ former COO, and Paradigm’s 1st employee & GP.
8.17.26 - Founders & Early Builders from Higgsfield, Simile, Gravis Robotics & SkyPilot
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DST

8.17.26 - Founders & Early Builders from Higgsfield, Simile, Gravis Robotics & SkyPilot

Higgsfield’s founding researcher, Simile’s 1st hire and 5th MTS, a Gravis Robotics co-founder, and SkyPilot talent building YC-backed Tokenless.
8.2.26 - Founding leaders from Forward and Segment, DroneDeploy-acquired Founders, and early builders from Cognition's latest acquisition.
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Repeat Founder

8.2.26 - Founding leaders from Forward and Segment, DroneDeploy-acquired Founders, and early builders from Cognition's latest acquisition.

Co-founders of Forward and Segment, whose founders now lead Foundational Industries and Revoy, building again plus DroneDeploy founders and early builders from Cognition's latest acquisition starting new.

American Dynamism

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10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff
Members Only
A16Z

10.1.26 - Flow’s 1st FTE, Volantis Founding Engineer & EliseAI’s Chief of Staff

Flow’s 1st FTE, Volantis founding engineering, Efficient Computer’s Head of Product, and EliseAI technical and operating leaders spinning out.
9.30.26 - The Varda Space Mafia
Members Only
Lux

9.30.26 - The Varda Space Mafia

Founding team members from Varda and Physical Intelligence, SpaceX and Anduril hardware leaders, repeat founders, and aerospace engineers spinning out into AI and robotics.
9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders
Members Only
SiMa

9.24.26 - SiMa.ai Founding Team Member, Quartermaster AI-acquired Founder, and Cyera’s Technical Leaders

SiMa.ai founding talent, an acquired maritime-tech founder, and Cyera architecture, engineering and Unit 8200 leaders spinning out.