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Sten Tamkivi

Investor

Founding Partner at Plural · Board director at CircuitHub

Tallinn, Harjumaa, Estonia

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Ask Balaji Srinivasan to introduce you to Sten

You →Balaji · together at Teleport, Inc (2014–2017) →Sten

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You →Jamie · together at Skaala →Sten

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You →Sam · 4 people · together at LHV →Sten

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About

Sten Tamkivi helped grow Skype's Estonian engineering team, founded Teleport (sold to Topia), invested with Taavet Hinrikus, mapped the Skype network and advocates backing companies that reshape regional economies.

Invests in

AI & Machine LearningClimate TechConsumerCrypto & Web3Defense TechFintechHealthtechNew MaterialsRoboticsSpace Tech

Board director at CircuitHubYC W12

Intro paths

YC

CircuitHub went through Y Combinator (Winter 2012) — Sten sits on its board, so any YC alum in your network can reach them through the company's founders.

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In turn, Sten can intro founders to CircuitHub's investors below.

CircuitHub's investors · 10

Agrolimen VenturesAndreessen HorowitzMenlo Park · $500K – $50M checksGV (Google Ventures)Mountain View · $250K – $50M checksHaiyin CapitalInitialized CapitalSan Francisco · $1M – $5M checksPluralLondon · since 2026Proto LabsMaple PlainStart CapitalSV AngelSan Francisco · $150K – $20M checksY CombinatorSan Francisco · $500K checks · since 2012

Co-founders at CircuitHub

ASAndrew Seddon
Andrew SeddonFounder

Experience

  1. PluralPartnercurrent2021 — presentTallinn, Harjumaa, Estonia
  2. SkaalaPartnercurrent2021 — present
  3. Founders PledgeMembercurrent2020 — present
  4. e-ResidencyMember of the Council, Estonian E-Residency Programcurrent2019 — presentTallinn, Estonia
  5. Kistler-Ritso FoundationMember of the Supervisory Board, Vabamu - Museum of Occupations and Freedomcurrent2015 — presentTallinn, Estonia
  6. Ambient Sound InvestmentsChairman of Supervisory Board, ASI Private Equitycurrent2006 — presentEstonia
  7. LHVMember of the Supervisory Board, LHV Group2015 — 2024Tallinn, Estonia
  8. Estonian Founders SocietyPresident, Board Member2019 — 2021Tallinn, Estonia
  9. TopiaChief Product Officer2017 — 2021Tallinn, Estonia
  10. PraxisMember of the Supervisory Board2007 — 2017Estonia
  11. Teleport, IncCo-founder & CEO2014 — 2017Palo Alto
  12. Andreessen HorowitzEntrepreneur in Residence2013 — 2014Menlo Park, CA
  13. SkypeGeneral Manager + various Product roles2005 — 2013Tallinn, Estonia
  14. President of the Republic of EstoniaAdvisor2009 — 2012Estonia
  15. Estonian Association of IT and TelecomsMember of the Board2009 — 2012Estonia
  16. Tallinn UniversityMember of Council2010 — 2012Estonia
  17. Informatics Council of EstoniaMember2007 — 2012Estonia
  18. Forwards StudioCo-founder1999 — 2011Tartu, Estonia
  19. HelmesBusiness Development Director2001 — 2005
  20. Halo Interactive DDB EstoniaCo-founder, CEO / Director of Strategic Development1996 — 2001

Skills & more

SaaS10Enterprise Software4Leadership66Communication35Public Speaking28Multi-Cultural Team Leadership7Team Leadership19Management50Analysis1Strategy99Entrepreneurship99Start-ups99
+12 moreProduct ManagementOrganizational CultureProduct Lifecycle ManagementAngel InvestingSoftware Development MethodologiesBusiness StrategyVenture CapitalCorporate DevelopmentAgile MethodologiesProduct DevelopmentSoftware DevelopmentProduct Marketing

Languages English · Estonian · German · Russian

From Sten's professional profile.

Deals · 2

CircuitHubBoard seat

via Plural · filed May 2026 · $29.4M raise

Wolfprint 3DBoard seat

via Plural · filed Jul 2022 · $55.6M raise

Attribution from SEC filings, press coverage, and firm rosters.

Colleagues at Plural

Carina Namih
General Partner at Episode1
Carina Namih
Partner at Plural
Declan Ryan
General Partner at Plural
Emiliano Giubileo
General Partner at Plural
Estelle Hansen
General Partner at Plural
Francesco Cavallini
General Partner at Plural
Ian Hogarth
Partner at Plural
Jason Ballard
Founder & CEO at ICON

Frequently asked questions

Who is Sten Tamkivi?
Sten Tamkivi helped grow Skype's Estonian engineering team, founded Teleport (sold to Topia), invested with Taavet Hinrikus, mapped the Skype network and advocates backing companies that reshape regional economies.
Where does Sten Tamkivi work?
Sten Tamkivi is Founding Partner at Plural and Board director at CircuitHub.
What does Sten Tamkivi invest in?
Sten Tamkivi invests in AI & Machine Learning, Climate Tech, Consumer, Crypto & Web3, Defense Tech, Fintech, Healthtech, New Materials, Robotics, Space Tech.
What boards does Sten Tamkivi sit on?
Sten Tamkivi holds tracked board seats at CircuitHub, Wolfprint 3D.
Where did Sten Tamkivi go to school?
Sten Tamkivi studied at Stanford University Graduate School of Business (Master of Science (MS), Management); University of Tartu (Public Relations and Communication Studies).

Same school

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