Manuel Castro
FounderFounder at Napkin Math
San Francisco, California, United States
FoundedNapkin Math Β· YC
About
Manuel Castro previously worked at Sonos, a healthcare technology company, and Verkada before founding Napkin Math, an AI-powered food journal application.
Founder at Napkin MathYC X26
Intro paths
YC
Manuel went through Y Combinator (Spring 2026) β any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Pete Koomen, General Partner at Y Combinator β the partner who ran Napkin Math's batch and knows the company first-hand. YC profile β
β
In turn, Manuel can intro founders to Napkin Math's investors below.
Napkin Math's investors Β· 1
Co-founders at Napkin Math
JT
Jynnie TangFounder
CN
Claire NordFounder
Experience
- Napkin MathCo-Foundercurrent2026 β presentSan Francisco, CA
- VerkadaGroup Product Manager2025 β 2026
- VerkadaLead Hardware Product Manager2024 β 2026San Mateo, California, United States
- VerkadaSenior Hardware Product Manager2023 β 2024San Mateo, California, United States
- ArteraSenior Product Manager2021 β 2023
- Sonos, Inc.Senior Product Manager - Consumer Experience2021
- Sonos, Inc.Senior Product Manager - Product Data2020 β 2021
- Sonos, Inc.Product Manager - Product Data2017 β 2021Santa Barbara, California
- Sonos, Inc.Product Management Intern2016Santa Barbara, California
- Pentelute LaboratoryMechanical Engineering Assistant2015MIT
- GTL MexicoTeacher2015
- Device Research Laboratory (MIT)Lab Assistant2014
- MIT Alumni AssociationTech Caller2013
Skills & more
Matlab3Python3Microsoft Office4Microsoft Word2Microsoft Excel2Windows1OS X1PowerPoint1Arduino1SolidWorks1AutoCAD1Team Leadership5
+12 more
CommunicationCritical ThinkingTeamworkLeadershipPublic SpeakingProduct DesignProduct ManagementRapid PrototypingEngineeringResearchTeachingComputer-Aided Design (CAD)From Manuel's professional profile.
Frequently asked questions
- Who is Manuel Castro?
- Manuel Castro previously worked at Sonos, a healthcare technology company, and Verkada before founding Napkin Math, an AI-powered food journal application.
- Where does Manuel Castro work?
- Manuel Castro is Founder of Napkin Math.
- What companies did Manuel Castro found?
- Manuel Castro founded Napkin Math.
- Where did Manuel Castro go to school?
- Manuel Castro studied at Massachusetts Institute of Technology (Mechanical Engineering); Alvin High School; Alvin College.
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Massachusetts Institute of Technology mafia546
Also came through, then founded or led a company.
Elad GilPhDFounded Brain Co.Nat FriedmanBachelor of ScienceFounded XamarinMatt HuangB.S.Founded HotspotsDelian AsparouhovDropoutFounded Nightingale +1Drew HoustonBSFounded Dropbox +1Arash FerdowsiComputer ScienceFounded Dropbox
+ 539 more
Verkada mafia13
Also came through, then founded or led a company.
Micah RosenbloomSeed InvestorFounded Founder CollectiveKonstantine BuhlerPartner @ Series B, C, D, E and BeyondFounded Listen LabsBill TrenchardDirectorFounded LiveOpsTom SharonDirector of New ProductsFounded CheqoutMax WuWeb Engineering InternFounded DisputeNinjaAnthony Ter-SaakovSoftware EngineerFounded OddsView
+ 6 more
Artera mafia3
Also came through, then founded or led a company.
Same school
Also attended Massachusetts Institute of Technology1,534
Fred WilsonCo-founder & Partner at Union Square VenturesElad GilSolo general partner investing through Gil CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesHemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and Techstars
+ 1,528 more
Shared employers
Also worked at Napkin Math2
Also worked at Verkada32
Micah RosenbloomGeneral Partner at Founder CollectiveKonstantine BuhlerInvestor at Sequoia CapitalMark XuInvestor at Index VenturesDerek ZanuttoInvestor at CapitalGCatherine McClureTalent at AudaciousLak AnanthGlobal Managing Partner at Next47
+ 26 more
Also worked at Artera8
Dan GoldsmithCo-Founder & Partner at Proofpoint CapitalBrant HeiseManaging Director at MemorialCare Innovation FundVictor EchevarriaManaging Director at Jackson Square VenturesHeiseMCIF Management at MemorialCare Innovation FundZodwa MbeleExecutive Director (Chief Financial Officer) at Development Bank of Southern AfricaGrant BlevinsPartner at Health Velocity Capital
+ 2 more
