Sten Tamkivi

Sten is Co-Founder and Partner at Plural, an early-stage European venture fund backing ambitious founders building transformational technology companies. He holds a Master's degree from Stanford Graduate School of Business and has been investing full-time since 2020.
Sten served as an early executive at Skype for over 8 years, growing the Estonian R&D office from 50 to 450 people and running product engineering for 300M+ monthly active users through the $8.5B exit to Microsoft. He co-founded Teleport as an Entrepreneur in Residence at Andreessen Horowitz, which was acquired by Topia in 2017, where he stayed as CPO to raise a $48M Series C.
Sten founded his first company at age 18, creating the first digital media agency in Estonia in 1996. He co-founded Creative Destruction Lab Estonia and has advised the President of Estonia on technology and entrepreneurship.
Plural has raised over 800M euros since 2022 and backed more than 50 companies across 9 countries, investing in frontier technologies including fusion energy, robotics, defense AI, and asteroid mining. The fund focuses on GDP-level impact on Europe through early-stage investments between 1M and 10M euros.
Plural's portfolio includes breakthrough companies like Proxima Fusion (largest private fusion funding in Europe), Monumental (construction robotics with 34 completed homes), and Helsing (autonomous defense systems). Sten was recognized as Investor of the Year runner-up at the 2023 Estonian Startup Awards.