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.

Manuel Castro

Founder

Founder at Napkin Math

San Francisco, California, United States

FoundedNapkin Math · YC

Find your path to Manuel

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

Mike VolpiunlockedManuel: together at Sonos, Inc. (2016–2021)

×4Manuel: together at Verkada

×5Manuel: together at Massachusetts Institute of Technology

×2Manuel: together at Sonos, Inc.

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 Math YC X26

Intro paths

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

Their group partner at YC was Pete Koomen, General Partner at Y Combinator — the partner who ran Napkin Math's batch and knows the company first-hand. YC profile ↗

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In turn, Manuel can intro founders to Napkin Math's investors below.

Napkin Math's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Napkin Math

Jynnie TangFounder

Claire NordFounder

Experience

Napkin MathCo-Foundercurrent2026 — presentSan Francisco, CA
VerkadaGroup Product Manager2025 — 2026
VerkadaLead Hardware Product Manager2024 — 2026San Mateo, California, United States
VerkadaSenior Hardware Product Manager2023 — 2024San Mateo, California, United States
ArteraSenior Product Manager2021 — 2023
Sonos, Inc.Senior Product Manager - Consumer Experience2021
Sonos, Inc.Senior Product Manager - Product Data2020 — 2021
Sonos, Inc.Product Manager - Product Data2017 — 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.