Rui Miadaira
FounderFounder at Ahazou · Founder at Carreira Beauty
Sao Paulo, Brazil
Writes $5K – $50K checks · typically $25K
FoundedAhazou · YCCarreira Beauty
Find your path to Rui
1,164 people in our graph share verified history with Rui — schools, employers, funds. One of them is your warm intro.
Erica VanunlockedRui: together at Stealth Startup (2025–2026)
×2Rui: together at Stealth Startup
×9Rui: together at Y Combinator
About
Rui Miadaira is a co-founder at a stealth-stage startup and has previously founded Ahazou, C Beauty, Olimpia Spa, and P Sorriso. His earlier career includes roles at Booz & Co., Itaú, and C&A. He holds an MBA from Harvard and a BSc in Computer Science.
Founder at AhazouYC S21
Intro paths
YC
Rui went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.
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In turn, Rui can intro founders to Ahazou's investors below.
Founder at Carreira Beauty
Intro paths
→
In turn, Rui can intro founders to Carreira Beauty's investors below.
Carreira Beauty's investors · 1
Experience
- Stealth StartupCo-Foundercurrent2024 — presentSão Paulo, Brazil
- AhazouFounder & CEO (YC S21)2017 — 2024São Paulo Area, Brazil
- Carreira BeautyFounder & CEO (500 startups)2013 — 2016São Paulo Area, Brazil
- Clínica Portal do SorrisoCo-Founder2009 — 2013São Paulo Area, Brazil
- Olimpia SpaCo-Founder2009 — 2013São Paulo Area, Brazil
- Itau-UnibancoSuperintendente (Sr Product Manager)2008 — 2009
- Itau-UnibancoSuperintendente (Sr Product Manager)2006 — 2008
- Banco ibi / C&A ModasSuperintendente (Sr Product Manager)2003 — 2006
- Booz Allen HamiltonSenior Consultant1999 — 2003Sao Paulo Area, Brazil
- NKF Singapore (National Kidney Foundation)Sr Marketing Consultant2002Singapore
Skills & more
Business Planning30Business Strategy39Personal Care Services6Entrepreneurship45Strategic Planning16Spa15Management Consulting11Product Management51Business Analysis4Operations Management2Start-ups61Strategy12
+12 more
ManagementMarketingStrategic ConsultingAnalyticsBusiness DevelopmentMarketing StrategyNew Business DevelopmentMarketing ManagementBusiness ModelingFinanceE-commerceLeadershipLanguages English · Portuguese
From Rui's professional profile.
Network1
Investors connected to Rui in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Rui Miadaira?
- Rui Miadaira is a co-founder at a stealth-stage startup and has previously founded Ahazou, C Beauty, Olimpia Spa, and P Sorriso. His earlier career includes roles at Booz & Co., Itaú, and C&A. He holds an MBA from Harvard and a BSc in Computer Science.
- Where does Rui Miadaira work?
- Rui Miadaira is Founder of Ahazou.
- What check size does Rui Miadaira write?
- Rui Miadaira typically writes checks of $5K – $50K.
- What companies did Rui Miadaira found?
- Rui Miadaira founded Ahazou, Carreira Beauty.
- Where did Rui Miadaira go to school?
- Rui Miadaira studied at Harvard Business School (MBA, Business Administration and Management); Y Combinator (Summer21); Universidade Estadual de Campinas (Bachelor of Science (B.Sc.), Computer Science).
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
Harvard Business School mafia893
Also came through, then founded or led a company.
Brad GerstnerMBAFounded AltimeterTim DraperMBAFounded Draper AssociatesMike Maples JrMBAFounded Pattern BreakersHristo BorisovOPM Class 64Founded PayhawkNoubar AfeyanVisiting LecturerFounded ProFound Therapeutics +13Wade MyersMBAFounded RealManage +6
+ 886 more
500 Global mafia671
Also came through, then founded or led a company.
Melanie Perkins500 Global 2012Founded CanvaCliff Obrecht500 Global 2012Founded CanvaCameron Adams500 Global 2012Founded CanvaEoghan McCabeGA 3 2011Founded FinDes TraynorGA 3 2011Founded FinAihui OngGA 3Founded Buela +3
+ 664 more
Universidade Estadual de Campinas mafia14
Also came through, then founded or led a company.
Elise PolezelFounded Replenish +1Murillo FreitasEspecialista em Engenharia de SoftwareFounded EasyCarros +1Glauber CostaMaster of Engineering (M.Eng.)Founded Turso +1Andre PenhaUndergraduationFounded Overplay +1Eduardo KüpperBachelorFounded HelplingJuliano DutraBacharelFounded Gringo
+ 7 more
Same school
Also attended Harvard Business School2,000
Brad GerstnerFounder & CEO of Altimeter CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesJim BreyerFounder & CEO of Breyer CapitalTim DraperFounder of Draper AssociatesMike Maples JrCo-founding Partner at FloodgateMamoon HamidPartner at Kleiner Perkins
+ 1,994 more
Also attended Y Combinator2,000
Ryan SheaCo-founder of Blockstack (Stacks)Suhail DoshiFounder of Mixpanel; founder of ParticleArhaan A.Deeptech Fellow at Clear VenturesAkshat GoenkaInvestor at Moonfire VenturesJon XuGeneral Partner at Y CombinatorChris GoldaGeneral Partner at Y Combinator
+ 1,994 more
Also attended Universidade Estadual de Campinas31
Bruno NardonInvestor at Norte VenturesLuiz BorroAI & Machine Learning Engineer at Struck CapitalGabriela MugnolImpact Manager at Circulate CapitalRodrigo SchmidtEngineering at AtlanticoAnderson TheesManaging Partner at Redpoint eventuresManoel LemosManaging Partner at Redpoint eventures
+ 25 more
Shared employers
Also worked at Stealth Startup482
Andrew ChenGeneral Partner at Andreessen HorowitzGabriel PereyraCo-founder & President of HarveyErica VanInvestment Director at Intel CapitalHemamAdvisor at Clear VenturesArhaan A.Deeptech Fellow at Clear VenturesHamish GarnettAssociate at Manta Ray Ventures
+ 476 more
Also worked at Booz Allen Hamilton275
Cristina JunqueiraCo-founder of NubankRohan BhargavaInvestor at 8VCJack AleksanyanDirector at Marlin Equity PartnersLiam DonohueInvestor at .406 VenturesTrip HoferVenture Partner at .406 VenturesNekeshia WoodsManaging Partner at Parkway Venture Capital
+ 269 more
