Fundraising Fox

Rhys Sullivan

Founder

Founder at Executor

San Francisco Bay Area

FoundedExecutor · YC

Find your path to Rhys

37 people in our graph share verified history with Rhys — schools, employers, funds. One of them is your warm intro.

Daniel BreyerunlockedRhys: together at Epic Games (2020)
×8Rhys: together at Epic Games
×2Rhys: together at Champlain College
Rhys: together at Dosu

About

Founder of Executor, a tool that unifies API integrations across protocols so AI agents can call any tool through a single interface. He previously worked as a software engineer at Vercel, Microsoft, Raven Software, and Epic Games.

Founder at ExecutorYC S26

Intro paths

YC

Rhys went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Executor's batch and knows the company first-hand. YC profile ↗

→

In turn, Rhys can intro founders to Executor's investors below.

Executor's investors · 2

Vela PartnersSan Francisco · $100K – $500K checksY CombinatorSan Francisco · $500K checks · since 2026

Experience

  1. ExecutorFoundercurrent2026 — present
  2. VercelSoftware Engineer2025 — 2026
  3. DosuProduct Engineer2024San Francisco, California, United States
  4. MicrosoftSoftware Engineer2023 — 2024
  5. MicrosoftSoftware Engineering Intern2022Silicon Valley, California, United States
  6. Raven SoftwareGameplay Engineer Intern2021Madison, Wisconsin, United States
  7. Epic GamesGame Programmer2020

Skills & more

C#React.js1C++10Unreal Engine 48Github5Debugging1DesignFull-Stack Development1TypeScript1Dashboard Metrics1Game Programming10Blender
+5 moreVirtual Reality (VR)Game DevelopmentKQLGSCBlueprints

From Rhys's professional profile.

Frequently asked questions

Who is Rhys Sullivan?
Founder of Executor, a tool that unifies API integrations across protocols so AI agents can call any tool through a single interface. He previously worked as a software engineer at Vercel, Microsoft, Raven Software, and Epic Games.
Where does Rhys Sullivan work?
Rhys Sullivan is Founder of Executor.
What companies did Rhys Sullivan found?
Rhys Sullivan founded Executor.
Where did Rhys Sullivan go to school?
Rhys Sullivan studied at Champlain College (Bachelor of Science - BS, Game Programming).

Founder mafias

Y Combinator mafia10,230

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1

+ 10,223 more

Champlain College mafia6

Also came through, then founded or led a company.

Aharon CherninDigital ForensicsFounded RewstMarc AllardCommerceFounded GlowtifyRoee HalfonB.ScFounded CallvuSaleban OlowBachelor’s DegreeFounded MemVidPeter JewettBS e-Business ManagementFounded Accessible Web

Same school

Also attended Champlain College10

Holly J. KillaryBookkeeper/Founding Member at FreshTracks CapitalBernard PrevostCo-founder @ Paymath at Boreal VenturesDerek HavilandChief Marketing Officer at Sarson FundsRashmi BhambhaniMarketing & Communications at Roseview Global IncubatorSarah MitchellDirector of Legal Operations at 137 VenturesAharon CherninChief Executive Officer at Rewst

+ 4 more

Shared employers

Also worked at Vercel34

Guillermo RauchFounder & CEO of VercelSangeen ZebInvestor at GV (Google Ventures)Glenn SolomonInvestor at GGV CapitalOren YungerInvestor at GGV CapitalGeoff LewisFounder & Managing Partner at BedrockAaron BrownSecurity Advisor at Modern Technical

+ 28 more

Also worked at Dosu1

Mei Z.General Partner at Alloy Fund

Also worked at Microsoft1,848

Reid HoffmanCo-founder of LinkedIn; Partner at GreylockGarry TanPresident & CEO of Y CombinatorNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGKai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIBill GatesCo-founder of Microsoft; Chair of the Gates FoundationMike KriegerCo-founder of Instagram; Chief Product Officer at Anthropic

+ 1,842 more

Also worked at Raven Software1

Chia Chin LeeExecutive Officer, Director at BigBox VR