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Top 5 Big Data Angel Investors in Estonia in January 2026

Last updated: Jan 2026 A list of 5 angel investors that invest in Big data startups based in Estonia. We rank investors based on the number of investments they made in Big data companies from Estonia. We update this investor list every month.

Top 5 Big Data Angel Investors in Estonia in January 2026

Investor	Big Data Estonia investments
Jaan Tallinn	4
Markku Jääskelainen	2
Martin Tajur	1
Ragnar Sass	1
Nick Handel	1

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Investor list

Jaan Tallinn is the Co-Founder of the Centre for Study of Existential Risk and Future of Life Institute.

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Investment focus

Software, Artificial Intelligence, Internet
Seed, Funding Round, Series A
United States, Estonia, United Kingdom

Portfolio highlights

LawZero — LawZero is committed to advancing research and creating technical solutions that enable safe-by-design AI systems.
TENYX — Discover innovative solutions for digital transformation at Tenyx. Explore our cutting-edge technology services designed to drive business growth and elevate your digital presence.
Lightyear — Lightyear is a simple and approachable way to invest your money globally without unnecessary barriers and fees.

Markku Jääskelainen.

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Investment focus

Drones, Big Data, Software
Seed, Series A
Estonia

Portfolio highlights

Hepta Insights — Hepta provides automated power grid management and analysis using autonomous drones and powerful analytics software. Visit our website to find out more!

Martin Tajur is the co-founder of Pipedrive.

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Investment focus

Software, SaaS, Recruiting
Pre-Seed, Seed, Angel
Estonia, Poland, Ukraine

Portfolio highlights

MX Labs — Allow your user to comprehensively monitor their vital signs. Check wellbeing, prevent misdiagnosis, and motivate lifestyle changes thanks to Shen.AI.
Teamscope — Understand what drives your team's performance, make exceptional hiring decisions, and unlock the full potential of your team.
SegmentStream — SegmentStream is a data intelligence platform which helps collect and unify from different data sources into own data warehouse for advanced analytics and attribution. Our solution is trusted by leading brands such as Benetton, Nespresso, New Balance, myToys, Eventim Group, and others.

Ragnar Sass is the Co-Founder of Darkstar Camp. He previously worked at LIFT99 as a Founder and CEO. Ragnar Sass attended Estonian Business School.

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Investment focus

Information Technology, Software, SaaS
Seed, Pre-Seed, Funding Round
Estonia, United States, Ukraine

Portfolio highlights

Alvin — Highly accurate, automated column-level lineage, powering your data workflows.
BeTRITON — 100% electric recreational vehicle - revolution in sustainable travel. BeTRITON (formerly known as Z-Triton) offers extraordinary experience and freedom to travel both over land and water.
Around — The largest network of workspaces on flexible terms. We are a savvy team from Latin America providing fast-growing companies with on-demand access to flexible office space. Everywhere.We believe work at its best is always creative and collaborative, expressed with freedom, autonomy, and purpose; and the space surrounding us should help us achieveit, anywhere & everywhere.We are shaping the future of work today by improving workspaces and the rules around them, and helping innovative teams find their ideal space to make their best work every day — our first step on a journey to change the way we work and think about work.Our best work. Anywhere. Everywhere. We are Around.

Nick Handel is Head of Data Science at Branch International. Past: Product Manager for machine learning at Airbnb.

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Investment focus

SaaS, Big Data, Data Integration
Seed
Estonia

Portfolio highlights

Alvin — Highly accurate, automated column-level lineage, powering your data workflows.

Investors by industry

Artificial intelligence

Venture Capital

Enterprise Software

Food and Beverage

Mobile Advertising

Wine And Spirits

Financial Services

Renewable Energy

Machine Learning

Agriculture (agtech)

Media (entertainment)

Investors by country

Russian Federation

Dominican Republic

United Arab Emirates

Marshall Islands

Angel Investors in Estonia by industry

Financial Services

Food and Beverage

Artificial intelligence

Enterprise Software

Agriculture (agtech)

Media (entertainment)

Machine Learning