Top 5 Enterprise Software Angel Investors in Estonia in September 2025

Last updated: Sep 2025 A list of 5 angel investors that invest in Enterprise software startups based in Estonia. We rank investors based on the number of investments they made in Enterprise software companies from Estonia. We update this investor list every month.

Top 5 Enterprise Software Angel Investors in Estonia in September 2025

Investor	Enterprise Software Estonia investments
Ahti Heinla	2
Vitaly Rubstein	2
Taavi Lepmets	2
Mark Gillett	1
Jeremie Berrebi	1

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Investor list

Ahti is the CEO, CTO and co-founder in Starship Technologies, a startup that intends to disrupt last-mile delivery by introducing self-driving local delivery robots. He is also a co-owner in Ambient Sound Investments, a private investment vehicle launched by Estonian Skype co-founders.Ahti conducts technical reviews of all ASI's potentialinvestments. His experience and knowledge as a system architect is invaluable in assessing and managing ASI's portfolio companies.Ahti picked up programming at the early age of ten, his fascination with all things technical resulting in him being the lead technical architect at Skype. Ahti has also worked on artificial intelligence, 3D graphics engines, signal processing, and building mobile phones.Out of the office, Ahti dons his running gear to enjoy orienteering and adventure racing events, where navigation is his strong-point.

Investment focus

Internet, Project Management, Software
Seed, Angel, Series A
Estonia, United States

Portfolio highlights

Fleep — Fleep is a web, Android, iOS, Mac and Windows app that wants to bridge the gap between ‘reply all’-style group email and enterprise messaging/IM services.Founded by ex-Skypers, Fleep is a messaging service that fills the gap between email and various IM/texting services. They take email’s ability to contact anyone and marry it withreal-time messaging.They are based in Estonia, with offices in Tallinn and Tartu. Their services are hosted on Amazon EC2 in Dublin, Ireland.
LIFT99 — LIFT99 is a coworking hub and network of startup founders in Tallinn, Estonia, and Kyiv, Ukraine. In 2018, we launched our Skillsharing Platform for founders around the world.
Swap.com — Swap is an online consignment and thrift store shop high-quality secondhand clothes. Shop the best brands at up to 90% off.

Vitaly Rubstein - Co-Founder and Partner @ RubyLight

Investment focus

Human Resources, Apps, SaaS
Seed, Angel
Estonia, United States

Portfolio highlights

Talentag — Talentag as a company runs 3 online services: Talentag.com, Utopic.me & Emp.ly. Talentag allows you to crowd-source your social talent profile. You tag your friends to tell them what they're good at or what describes them, creating a social profile for them. You also receive tags and vouches back, getting feedback from others. Yourprofile says, what others think of you. Talentag can be also used as a community database to find people according to tags. Utopic.me shows the hottest topics among your friends. You can browse the most popular links, videos, music, movies & events, shared and liked by your friends. You'll have a personalized real-time view of what's trending today among people who matter to you the most. Initial content comes mostly from Facebook, with other data sources like Twitter, Youtube and others to be added shortly. Utopic was launched in March, 2011. The company also operates Emp.ly, a a simple web app to post job ads to social networks like Twitter, Facebook and LinkedIn and add rewards and incentives for people to spread the word. It's the quickest and easiest way to post vacancies on multiple networks and get stats on views, clicks and sharing.The company is based in San Francisco, California and Tartu, Estonia.
Weekdone — Leading OKR software to align your teams and organization. Set structured goals, track weekly plans, and view real-time progress status.

Taavi Lepmets - Co-Founder @ Karu Capital

Investment focus

Software, Human Resources, Apps
Seed, Angel, Funding Round
Latvia, Estonia, United States

Portfolio highlights

Talentag — Talentag as a company runs 3 online services: Talentag.com, Utopic.me & Emp.ly. Talentag allows you to crowd-source your social talent profile. You tag your friends to tell them what they're good at or what describes them, creating a social profile for them. You also receive tags and vouches back, getting feedback from others. Yourprofile says, what others think of you. Talentag can be also used as a community database to find people according to tags. Utopic.me shows the hottest topics among your friends. You can browse the most popular links, videos, music, movies & events, shared and liked by your friends. You'll have a personalized real-time view of what's trending today among people who matter to you the most. Initial content comes mostly from Facebook, with other data sources like Twitter, Youtube and others to be added shortly. Utopic was launched in March, 2011. The company also operates Emp.ly, a a simple web app to post job ads to social networks like Twitter, Facebook and LinkedIn and add rewards and incentives for people to spread the word. It's the quickest and easiest way to post vacancies on multiple networks and get stats on views, clicks and sharing.The company is based in San Francisco, California and Tartu, Estonia.
Weekdone — Leading OKR software to align your teams and organization. Set structured goals, track weekly plans, and view real-time progress status.
Sonarworks — SoundID Reference software calibrates your speakers and studio headphones, so you can trust that every mix will translate.

Mark Gillett re-joined Silver Lake in 2013 after previously serving at the firm from 2009-2011. He is a Managing Director and Chief Operating Partner. Prior to his return to Silver Lake, Mr. Gillett served as Chief Development Officer and Chief Operating Officer for Skype, the global communications platform, driving acceleration of thecompany's growth strategy and leading its integration following Microsoft's acquisition of the business in 2011. Subsequently, as Corporate Vice President at Microsoft, he oversaw the growth of Microsoft's $2.5bn enterprise and consumer communications software and services portfolio, while continuing to lead product innovation and operations for Skype.Prior to joining Skype, Mr. Gillett led value creation for Silver Lake in Europe. He joined the firm from Alvarez & Marsal (A&M), where he was a Managing Director and Partner leading the High Technology, Telecoms and Private Equity practice in Europe. At A&M, he specialized in restructuring and operational diligence, performance improvement and turnaround management of online, consumer and enterprise software and device businesses. While at A&M, he served in interim leadership positions and advisory or operating roles including at Lehman Brothers Holdings International, ADT/Tyco (France), Navigon AG, and iSOFT plc. At A&M, he also led engagements with several leading private equity firms. Mr. Gillett served as a non-executive director for European Directories, a local search and advertising group, through a restructuring, digital transition and sale of the business in 2013. Mr. Gillett is a Fellow of the British Computer Society, a Fellow of the Institute of Directors and Member of the IT Service Management Forum.