About
João Graça holds a Ph.D. in Natural Language Processing and completed post-doctoral research at the University of Pennsylvania. He is co-founder and CTO of Unbabel, a machine translation platform, and co-founded the Lisbon Machine Learning Summer School.
Founder/CTO at UnbabelYC W14
Intro paths
YC
João went through Y Combinator (Winter 2014) — any YC alum in your network can reach them through the YC community.
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In turn, João can intro founders to Unbabel's investors below.
Unbabel's investors · 17
Amino CapitalPalo Alto · $100K – $10M checksCaixa CapitalLisbon · since 2017FaberLisbon · $2.7M checksFunders Club ManagementSan Francisco · since 2017FundersClubSan Francisco · $250K – $5M checksGreycroftNew York · $100K – $5M checks · since 2019Indico Capital PartnersLisbon · $250K – $10M checks · since 2019M12 (Microsoft's Venture Fund)Seattle · $100K – $10M checks · since 2017MatrixSan Francisco · $100K – $10M checksNotion CapitalLondon · $1M – $100M checks · since 2017Point72 VenturesNew York · $1M – $75M checks · since 2019Salesforce VenturesSan Francisco · $5M – $50M checks · since 2017Samsung NextSan Jose · $100K – $5M checks · since 2017Scale Venture PartnersSan Francisco · $5M – $25M checks · since 2017Shilling VCLisbon · $108K – $1.1M checksWorkday VenturesSan FranciscoY CombinatorSan Francisco · $500K checks · since 2014
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Co-founders at Unbabel
Experience
- SokoFounder CTOcurrent2025 — presentPortugal
- Shilling VCVenture Partnercurrent2025 — presentLisbon, Portugal
- UnbabelFoundercurrent2013 — present
- UnbabelCTO and Board Member2013 — 2025Lisbon
- LxMLSFoundercurrent2010 — presentLisbon, Portugal
- LangOps InstituteMember of the Board of Advisorscurrent2025 — present
- SenseiInvestorcurrent2024 — presentLisbon, Portugal
- ZBioticsInvestorcurrent2022 — presentSan Francisco Bay Area
- YouverseInvestorcurrent2021 — presentLisbon, Portugal
- EasolInvestorcurrent2021 — presentLondon, England, United Kingdom
- MeightInvestorcurrent2021 — presentLisbon, Portugal
- ReplaiInvestorcurrent2020 — presentLisbon, Portugal
- Forbes Technology CouncilOfficial Membercurrent2018 — present
- Stealth AI StartupFounder & CTO2025 — 2026Lisbon, Portugal
- L2FResearcher2011 — 2013Lisboa
- Dezine.comChief Scientist2012 — 2013Lisboa
- FlashGroupResearch Scientist2011 — 2012
- University of PennsylvaniaPostDoc2010 — 2011
- INESC-ID LisboaResearcher2004 — 2006
Skills & more
python5java3Python85Java16LaTeX10Natural Language Processing99Machine Learning99Artificial Intelligence62Algorithms35Data Mining19Software Development29Software Engineering44
+12 more
Software DesignresearchResearchMachine TranslationLispComputational LinguisticsPattern RecognitionInformation ExtractionComputer ScienceProgrammingText MiningInformation Retrieval- The Innovative Technology Leader — Stanford University Graduate School of Business
From João's professional profile.
Frequently asked questions
- Who is João Graça?
- João Graça holds a Ph.D. in Natural Language Processing and completed post-doctoral research at the University of Pennsylvania. He is co-founder and CTO of Unbabel, a machine translation platform, and co-founded the Lisbon Machine Learning Summer School.
- Where does João Graça work?
- João Graça is Founder/CTO of Unbabel.
- What companies did João Graça found?
- João Graça founded Unbabel.
- Where did João Graça go to school?
- João Graça studied at University of Pennsylvania (Post-Doc, Computer Science); Instituto Superior Técnico (PHD, Computer Science); Instituto Superior Técnico (Egenharia Informatica).
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
University of Pennsylvania mafia201
Also came through, then founded or led a company.
Kunal BahlSystems EngineeringFounded SnapdealScott Wolf, MDBAFounded Cardiac Dimensions +3Ben LererBSFounded Thrillist +1Eric HeilBSEFounded Ladderbio +1Trevor PriceB.A.Founded Quilted Health +1Lyle BerkowitzBSEFounded Apollo Health +1
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+ 194 more
Instituto Superior Técnico mafia8
Also came through, then founded or led a company.
Pascal WielerMaster of Science - MSFounded GoCharly +1Jaime JorgeBsCFounded CodacyDiogo MónicaBScFounded AnchorageFrancisco Beirão BeloMaster of Science (MSc)Founded PassworksMaximilian IsenseeEnvironomical Pathways for Sustainable Energy Systems (SELECT)Founded KitekraftGovinda UpadhyaySpring SeminarFounded SmartHelio
+ 1 more
Easol mafia2
Also came through, then founded or led a company.
Replai mafia2
Also came through, then founded or led a company.
Same school
Also attended University of Pennsylvania824
Brian ActonCo-founder of WhatsApp; co-founder of Signal FoundationKunal BahlCo-founder of Snapdeal; co-founder of Titan CapitalDasha MaggioPartner at Felicis Ventures, writer on venture capital and founder psychologyNancy WangInvestor at Felicis VenturesLeah von SiemensPartner at Manta Ray VenturesEghosa OmoiguiFounder and Managing General Partner at EchoVC Partners
+ 818 more
Also attended Instituto Superior Técnico57
Flore BelmansAnalyst at Heran PartnersJoão BandeiraPrincipal, Infrastructure Software at Bright Pixel CapitalJoão MoutinhoDirector, People at Bright Pixel CapitalJoaquim Sérvulo RodriguesManaging Partner at Armilar Venture PartnersPedro Ribeiro SantosManaging Partner at Armilar Venture PartnersDuarte MineiroManaging Partner at Armilar Venture Partners
+ 51 more
