Fundraising Fox
Demetrios Kellari
InvestorFounderTechnical Advisor at New System Ventures
Brooklyn, New York, United States
FoundedNeion Bio
Find your path to Demetrios
1,223 people in our graph share verified history with Demetrios — schools, employers, funds. One of them is your warm intro.
Conrad ShangunlockedDemetrios: together at Neion Bio (2026)
×3Demetrios: together at CERN
×7Demetrios: together at Airbus
Demetrios: together at New System Ventures
Experience
- Neion BioCo-Founder & CEOcurrent2024 — presentNew York City Metropolitan Area
- New System VenturesAdvisorcurrent2024 — presentNew York City Metropolitan Area
- CavnueAdvisorcurrent2024 — present
- CavnueCo-Founder and Head of Product, Systems, and Technology2021 — 2024New York City Metropolitan Area
- VariousAngel Investorcurrent2021 — presentNew York, New York, United States
- SandboxAQAdvisor2022 — 2025New York City Metropolitan Area
- DioxycleConsultant / Advisor2024
- Sidewalk Infrastructure Partners (SIP)Investor2020 — 2021New York City Metropolitan Area
- X, the moonshot factoryProduct Manager2018 — 2020
- X, the moonshot factoryStrategist2018 — 2020
- McKinsey & CompanySenior Analyst2016 — 2019Greater New York City Area
- Massachusetts Institute of Technology (MIT)Researcher2014 — 2016Cambridge, MA
- CERNMechanical and Materials Engineer2013
- AirbusAerospace Engineer, Special Projects2011 — 2012Bristol, United Kingdom
Skills & more
Start-ups12Entrepreneurship19New Ventures3Value Creation3Value Chain Analysis2Fluid Mechanics20CFD3Aerodynamics17Matlab28Catia1Aerospace3Value Engineering1
+8 more
NastranCompositesStress AnalysisAbaqusAircraftFortranFluid DynamicsObjective-CLanguages Greek
From Demetrios's professional profile.
Colleagues at New System Ventures
Alfred Johnson
CEO Partner at Ardent Venture
Aly Hudson
Technical Associate at New System Ventures
Charlotte Matthews
Built Environment Advisor at New System Ventures
Daniel Nilsson Sjolander
Principal at New System Ventures
Dr. Matt Lucas
Technical Advisor at New System Ventures
Ian Samuels
Founder & Managing Partner at New System Ventures
Mathilde Beniflah
Director of Partnerships & Operations at New System Ventures
Frequently asked questions
- Who is Demetrios Kellari?
- Technical Advisor at New System Ventures
- Where does Demetrios Kellari work?
- Demetrios Kellari is Founder of Neion Bio and Technical Advisor at New System Ventures.
- What companies did Demetrios Kellari found?
- Demetrios Kellari founded Neion Bio.
- Where did Demetrios Kellari go to school?
- Demetrios Kellari studied at Massachusetts Institute of Technology (Master of Science (M.S.), Systems Engineering, Technology Policy); Imperial College London (Master of Engineering (MEng), Aerospace, Aeronautical and Astronautical Engineering); edX (Certificate, Biology, General).
Founder mafias
Massachusetts Institute of Technology mafia1,432
Also came through, then founded or led a company.
McKinsey & Company mafia893
Also came through, then founded or led a company.
Imperial College London mafia450
Also came through, then founded or led a company.
Nessan BerminghamDoctor of Philosophy - PhDFounded Korro Bio +2David SchilanskyMScFounded One Biosciences +2Marion GaspermentBachelor’s DegreeFounded May Health +1David MyttonMaster of Science - MSFounded Server Density +1Slava SolonitsynMBAFounded No Cap +1Barnaby MaletTeaching AssistantFounded machine0 +1
Airbus mafia65
Also came through, then founded or led a company.
Benoit LemaignanOperation and Environnment managerFounded Waga Energy +2Alexander HarmsenElectrical & Software EngineerFounded PortfolioPilot +1Saulo TristaoInternshipFounded FacioPatrickInternFounded ThinxtraDirk HokeCEO Defence and Space and Member of the Airbus Group Executive CouncilFounded VolocopterDaniel BuchmuellerVice President, Head of Drone Cargo by AirbusFounded Gallatin Ai
MITx Courses mafia8
Also came through, then founded or led a company.
Zlatko JončevXSeriesFounded b12 LabsLuca BolondiMITx: 15.480x The Science and Business of BiotechnologyFounded Crane BiosciencesNidhi GuptaMicro Masters Program: Supply Chain FundamentalsFounded PortcastCeyhun DerinbogazMachine Learning for Big Data and Text ProcessingFounded TextcortexMartín SerranoMicroMastersFounded 1Mentor WebsiteEric HerreroMicromaster degreeFounded Xinix
Same school
Also attended Massachusetts Institute of Technology2,000
Hemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and TechstarsMatt HuangCo-founder and Managing Partner at ParadigmDelian AsparouhovPartner at Founders Fund and co-founder of VardaDrew HoustonCo-founder & CEO of Dropbox
+ 1,994 more
Also attended Imperial College London827
Deji SasegbonVP, Platform & Portfolio Operations at EchoVC PartnersMadison LenormandInvestor at DaphniPauline BoucherInvestor at DaphniLoubaba El AyoubiInvestor at NorthzoneGiovanni MariggiInvestor at MedicxiFrancois PrinslooInvestor at Medicxi
+ 821 more
Also attended edX12
Simon PorterPrincipal at Blackfinch VenturesYip Hon MunChair at Tiger 21 at Orbit StartupsJosh Hoffman-SennGeneral Partner at The MBA FundRob GaskellPartner & Founder at AppoldYvonne OgunoikiInvestor at Rising Tide Africa (RTA)Ghazwa KhalatbariInvestment Team at Creandum
+ 6 more
Also attended MITx Courses11
Felipe SantamariaManaging Director, LATAM at RockstartJoy JingMarketing & Social Media at Lair East LabsYogesh KissoondaryGroup Head of Corporate Finance at CIEL Group / CIEL FinanceOliver SanchezInvestor at ScaleUp LatAmZlatko JončevFounder at b12 LabsLuca BolondiCEO at Crane Biosciences
+ 5 more
Shared employers
Also worked at Neion Bio2
Also worked at Sidewalk Infrastructure Partners (SIP)8
Jeremiah GordonGeneral Counsel / Chief Compliance Officer at CapitalGEmily RohrbachInvestor at Riverwood CapitalOlivia SteedmanExecutive Managing Director at Teachers' Venture GrowthLinxi ChangDirector at Teachers' Venture GrowthIan SamuelsFounder & Managing Partner at New System VenturesMichael DeLuciaPartner at Montauk Climate
+ 2 more
Also worked at X, the moonshot factory85
Jonathan RossFounder of Groq; inventor of Google's TPU — now at NvidiaJames WangGeneral Partner at Creative VenturesAlice CheungPartner, Talent at S32Anisha MustiInvestor at Dorm RoomSteven WillingerGP at Blockchain BuildersMike McCauleyCo-founder & General Partner at Inovia Capital
+ 79 more
Also worked at McKinsey & Company2,000
Ann Miura-KoCo-founding Partner at FloodgateJeremy LiewPartner at Lightspeed Venture PartnersMike SpeiserManaging Director at Sutter Hill VenturesJeremy LevinePartner at Bessemer Venture PartnersFabrice GrindaCo-founder & Managing Partner at FJ LabsJeppe RindomCo-founder & CEO of Pleo
+ 1,994 more