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Top 5 Big Data Angel Investors in Estonia in September 2025

Last updated: Sep 2025 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 September 2025

Investor	Big Data Estonia investments
Jaan Tallinn	4
Markku Jääskelainen	2
Ragnar Sass	1
Timo Rein	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!

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.

Timo Rein - Co-Founder @ Pipedrive

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Investment focus

Software, Recruiting, Human Resources
Seed, Angel, Convertible Note
Estonia, Finland, United Kingdom

Portfolio highlights

Antegenes — What is your cancer risk? Let Antegenes have a look at your genetics. Use existing DNA data or have Antegens take a new sample.
Bidrento — With Bidrento you can easily manage PRS, Built-to-rent, Student Housing, Co-Living, Mini-Storages, Commercial real estate in one single software. Save your time and grow your business with Bidrento. Try it already today!
Teamscope — Understand what drives your team's performance, make exceptional hiring decisions, and unlock the full potential of your team.

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

Financial Services

Food and Beverage

Enterprise Software

Mobile Advertising

Wine And Spirits

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

Media (entertainment)

Machine Learning

Agriculture (agtech)