Fundraising Fox

Sergio Álvarez Leiva

InvestorFounder

Investor at Kfund · Founder at Cartodb Inc

Madrid, Spain

Writes $230K – $2.3M checks · typically $1.1M

FoundedCartodb Inc

Find your path to Sergio

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

Alessandro GiacomettiunlockedSergio: together at Kfund (2025–2026)
×9Sergio: together at Kfund
Sergio: together at Inditex
Sergio: together at Universidad Rey Juan Carlos

About

Product-focused entrepreneur who co-founded three data companies (Vizzuality, CARTO and Tinybird) and spent nearly three years on the product and tech teams at Zara.com.

Founder at Cartodb Inc

Intro paths

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In turn, Sergio can intro founders to Cartodb Inc's investors below.

Cartodb Inc's investors · 4

AccelPalo Alto · $1.6M – $70M checks · since 2015Earlybird Venture CapitalBerlin · $540K – $12M checks · since 2015Kibo VenturesMadrid · $2.2M – $5.4M checks · since 2015SINEWAVE VENTURESMclean · $500K – $25M checks · since 2015

Co-founders at Cartodb Inc

JDJavier de la Torre
Javier de la TorreExecutive Officer, Director
LSLuis Sanz
Luis SanzCEO

Experience

  1. K FundVCcurrent2020 — presentMadrid
  2. Tinybird.coProductcurrent2020 — present
  3. VizzualityBoard Membercurrent2014 — present
  4. VizzualityCo-Founder / Head of Design2009 — 2014
  5. INSTITUTO TRAMONTANATeacher and Program Director2019 — 2022
  6. INSTITUTO TRAMONTANAAdvisor2016 — 2022Madrid
  7. CARTOBoard Member2017 — 2021
  8. CARTOCo-Founder, Chief Product Officer2012 — 2017Madrid & NYC
  9. InditexProduct/Tech @zara.com2018 — 2020
  10. 7r VenturesVenture advisor2017 — 2019
  11. IED | Istituto Europeo di DesignProfessor2012 — 2014Greater Madrid Metropolitan Area
  12. IE SchoolTeacher at Master in Global Environmental Change - Data Visualization2010 — 2012
  13. Vostok StudioProduct Designer2009Madrid
  14. IMASTEInteraction Manager & Art Director2007 — 2009
  15. IMASTEWeb Designer2006 — 2007
  16. GBIFFreelance Interaction Designer2009

Skills & more

Front-end developmentInformation designData visualization1User Experience43User Interface Design29Interaction Design31Product Design18Data Visualization12Front-end12

Languages English

From Sergio's professional profile.

Investments

Investor

AbacumKatooMITO AI

Per curated public sources.

Colleagues at Kfund

Alessandro Giacometti
Vice President, Head of Investor Relations at Vida Ventures
Borja Santos
Investor at Kfund
Carina Szpilka
Investor at Kfund
Celia Buendía
Investor at Kfund
Cesar Traseira
Investor at Kfund
César Traseira
Investor at Kfund
Cristina Garcia-Margallo
Investor at Kfund
Eduardo Alfaro
Investor at Kfund

Network1

Carina Szpilka
Investor at Kfund

Investors connected to Sergio in public investor directories — a warm-intro map.

Frequently asked questions

Who is Sergio Álvarez Leiva?
Product-focused entrepreneur who co-founded three data companies (Vizzuality, CARTO and Tinybird) and spent nearly three years on the product and tech teams at Zara.com.
Where does Sergio Álvarez Leiva work?
Sergio Álvarez Leiva is Founder of Cartodb Inc and Investor at Kfund.
What check size does Sergio Álvarez Leiva write?
Sergio Álvarez Leiva typically writes checks of $230K – $2.3M.
What companies did Sergio Álvarez Leiva found?
Sergio Álvarez Leiva founded Cartodb Inc.
What companies has Sergio Álvarez Leiva invested in?
Investments tracked here include Abacum, Katoo, MITO AI.
Where did Sergio Álvarez Leiva go to school?
Sergio Álvarez Leiva studied at Programa Vostok II (Master, HCI & Interaction Design); Universidad Rey Juan Carlos (Computer Science).

Founder mafias

Universidad Rey Juan Carlos mafia5

Also came through, then founded or led a company.

José V. FernándezInternational Business DegreeFounded BankuishJulián FernándezBachelor's in Telecommunications EngineeringFounded FOSSADiego PardillaMasterFounded EthicHubDavid LlorenteMaster's degreeFounded Narrativa

Tinybird mafia3

Also came through, then founded or led a company.

Scott SagePre Seed Investor & Board MemberFounded CraneEsther LozanoBackend developerFounded Lightbase

Same school

Also attended Universidad Rey Juan Carlos22

Joan MirallesHead of Administration & Valuation at Inveready Technology Investment GroupJuan CabañasInvestor at Adara VenturesPanos PapadopoulosPartner at Marathon Venture CapitalHenri IsohanniPrincipal at Helen VenturesEduardo MarinoAnalyst at Matterwave VenturesKaren Hortua CastilloInvestor at Actyus

+ 16 more

Shared employers

Also worked at Tinybird.co2

Scott SageCo-Founder and Partner at Crane Venture PartnersEsther LozanoFounder at Lightbase

Also worked at INSTITUTO TRAMONTANA1

Iñigo MedinaChief Product Officer at Dcycle

Also worked at Inditex16

Nicola SibleyExecutive & Marketing Assistant at NorthzoneSarah GreenMarketing and Community Manager at Iris CapitalJessica VargasExecutive Assistant at Griffin Gaming PartnersAurkene ZiluagaAssociate at Talde Private EquityDesiree FrancoisExecutive Assistant at ETF PartnersPatricia SingsonBusiness Development Team Coordinator at Ontario Centre of Innovation

+ 10 more

Also worked at 7r Ventures1

Carlos GómezCEO & Co-Founder at Vivla