What does Deb Ray invest in?

Deb Ray invests in AdTech, AI & Machine Learning.

Where did Deb Ray go to school?

Deb Ray studied at Caltech (PhD, Computation and Neural Systems); UCL (Visiting - Gatsby Computational Neuroscience Unit, Machine Learning); University of Toronto (Bachelor of Science (BS), Mathematics).

Deb Ray

Investor

Co-founder and Chief AI Officer at InferenceCloud.ai at SignalFire

Washington, District of Columbia, United States

About

Deb Ray is co-founder and Chief AI Officer at InferenceCloud.ai. He was previously CTO of EndCue in Los Angeles, where he led an AI platform for analyzing and generating original content, and earlier founded and led technology for two adtech startups. He holds a PhD from Caltech and has worked as a researcher in deep learning and AI for over a decade.

Invests in

AdTechAI & Machine Learning

Experience

U.S. Department of Housing and Urban DevelopmentChief AI Officer & Chief Data Officercurrent2025 — presentWashington, District of Columbia, United States
US Federal GovernmentSenior Advisor2025Washington, District of Columbia, United States
Coactive ScienceFounder and Scientist2023 — 2025Seattle, Washington, United States
RivetAICo-Founder and CEO2019 — 2025Los Angeles Metropolitan Area
InferenceCloud.aiCo-Founder & Chief AI Officer2023 — 2025Miami, Florida, United States
SignalFireFund Advisor & LP2017 — 2025San Francisco Bay Area
VideoAmpChief Data Officer -> Advisor2014 — 2020Santa Monica, CA
Pasadena Labs, Inc.Chief Data Scientist2013 — 2015Pasadena, CA
CaltechPhD Candidate in Machine Learning and Economics2008 — 2013
Microsoft CorporationMicrosoft Research2011
NomuraQuant2007
Microsoft CorporationMicrosoft Research2006 — 2007

Skills & more

Machine Learning94Artificial Intelligence54Big Data68Algorithms39Data Mining20Start-ups20Statistical Modeling15Optimizations13Cloud Computing14Software Engineering11Consumer Behaviour6Optimization7

+12 more

StatisticsComputer VisionSoftware DevelopmentE-commerceOnline AdvertisingApache SparkDeep LearningCryptocurrencyRHadoopC++Python

From Deb's professional profile.

Colleagues at SignalFire

Aayush Sharma

Senior Associate at SignalFire

Alex Hooshmand

Co-founder ZaiNar & Bluekai at SignalFire

Andrew Reid

Investor at Lead Edge Capital

Andrew Reid

Director, GTM Recruiting at SignalFire

Asher Bantock

Head of Research at SignalFire

Audrey Salomez

Contrôleur financier at 123Venture

Ben Davenport

Venture Partner at Blockchain Capital

Bobby Lent

Managing Partner at Hillsven & Co-founder of Ariba at SignalFire

Frequently asked questions

Who is Deb Ray?: Deb Ray is co-founder and Chief AI Officer at InferenceCloud.ai. He was previously CTO of EndCue in Los Angeles, where he led an AI platform for analyzing and generating original content, and earlier founded and led technology for two adtech startups. He holds a PhD from Caltech and has worked as a researcher in deep learning and AI for over a decade.
Where does Deb Ray work?: Deb Ray is Co-founder and Chief AI Officer at InferenceCloud.ai at SignalFire.
What does Deb Ray invest in?: Deb Ray invests in AdTech, AI & Machine Learning.
Where did Deb Ray go to school?: Deb Ray studied at Caltech (PhD, Computation and Neural Systems); UCL (Visiting - Gatsby Computational Neuroscience Unit, Machine Learning); University of Toronto (Bachelor of Science (BS), Mathematics).

Same school

Also attended Caltech144

Shaun MaguirePartner at Sequoia Capital Dario AmodeiCo-founder & CEO of Anthropic Fei-Fei LiCo-founder & CEO of World Labs; Sequoia Professor of Computer Science at Stanford Scott BillerInvestor at GV (Google Ventures)Seth LieblichInvestment Team at 8VC Markus EnzelbergerPartner at Versant Ventures

+ 138 more

Also attended UCL396

Demis HassabisCo-founder & CEO of Google DeepMind André DuboisInvestor at Index Ventures Frédérique DameInvestor at GV (Google Ventures)Jonas VetterleInvestor at Moonfire Ventures Marie FerriInvestor at Daphni Elena PantaziPartner & Head of Platform at Northzone

+ 390 more

Also attended University of Toronto341

Ilya SutskeverCo-founder of OpenAI; co-founder & CEO of Safe Superintelligence Nick FrosstCo-founder of Cohere Yasmin RazaviInvestor at Spark Capital Imran BashirFounding Partner, Chief Operating Officer at Extreme Venture Partners Karim GillaniGeneral Partner at Luge Capital Andrew MiklasGeneral Partner at Y Combinator

+ 335 more

Shared employers

Also worked at US Federal Government3

Les CraigInvestor at Next Frontier Capital Chris InglisInvestor at Ballistic Ventures Matt W.Founder at Obsidian

Also worked at SignalFire37

RossInvestor at Dig Ventures Management Limited Tom RyanInvestor at FELIX CAPITAL Sooah ChoFormer Underscore Principal at Underscore VC Andrew ReidDirector, GTM Recruiting at SignalFire Asher BantockHead of Research at SignalFire Chris FarmerPartner & CEO at SignalFire

+ 31 more

Also worked at VideoAmp6

Brian MesicManaging Director at Ankona Capital Mike ShehanCEO Partner at Ardent Venture Allen YuVice President at ITIC at Taiwan Global Angels Clancey StahrManaging Partner at GoAhead Ventures Jonathan ChingPartner at Kingfisher Luis ManriqueFounder at Understudy Labs

Also worked at Microsoft Corporation1,188

Reid HoffmanCo-founder of LinkedIn; Partner at Greylock Garry TanPresident & CEO of Y Combinator Nat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDG Kai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AI Bill GatesCo-founder of Microsoft; Chair of the Gates Foundation Mike KriegerCo-founder of Instagram; Chief Product Officer at Anthropic

+ 1,182 more