Marcin Borowiecki

Serial entrepreneur turned investor. Supporting global expansion of emerging European tech champions

📍 United States🔄 Updated September 2026💼 4 investments📅 3 years investing🗓 Last invested Jun 2024
VC🌍 United States
4
Total investments
0
Early stage
1
Mid stage
1
Late stage
3y
Years active

Portfolio

4 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Co-Founder and Investor
Jun 2024
Stealth AI Startup is a private community for founders, researchers, and engineers building next-generation AI companies before public launch. Founders tag themselves here to: 🔹 Gain credibility while working in stealth 🔹 Connect discreetly with other AI founders 🔹 Receive inbound interest from early-stage VCs 🔹 Join curated founder-only circles & discussions 🔹 Access hiring pipelines for early team building If youre building an AI startup in stealth, add your profile to the community and tag yourself to this page. Your stealth journey deserves visibility — without revealing your idea. Join the world’s largest AI stealth founder network.
Co-Founder and Investor
Jun 2024
ARK Labs is a developer‑first AI infrastructure platform on a mission to tear down the cost, complexity, and privacy barriers that hold back innovation. From state‑of‑the‑art chatbots and voice apps to stunning Stable Diffusion image generation, our API‑first approach delivers stateful inference across LLMs, embeddings, TTS engines, and diffusion models—all at a tenth of the price you’d pay elsewhere. Your data stays yours. We’re built around rigorous privacy and compliance standards, so you can confidently handle sensitive workloads without compromising on security or control. Our intelligent token management and context‑memory architecture ensure your applications never lose track of the conversation—and you only pay for what matters. Founded by engineers who’ve built and scaled LLM stacks at top AI companies, ARK Labs combines human‑driven support with enterprise‑grade reliability. Customize our APIs to your exact needs and lean on our proven expertise to accelerate every step of your AI journey—without the headaches. Welcome to inference infrastructure that finally puts developers in the driver’s seat.
Investor
Jan 2024
Aether Biomedical was founded on the premise of creating healthcare technology and robotics based on human-centered design. A culture focused on building the next generation of bionic devices, utilizing cutting-edge biosignal processing and software integration. After an expansion in Europe and Asia, we are now launching Zeus to the U.S market, with our U.S. headquarters in Chicago, IL. We have developed the Zeus hand, which is the strongest multi-articulating myoelectric hand in the world, providing 30-40% more grip force (152 Newtons) than existing market options! Apart from being the strongest hand, Zeus is highly robust as well. This is due to its patent-pending impact resistance mechanism which allows the fingers to flex when facing any impact, protecting them from breakage. Zeus is the first bionic hand that you can repair completely, within your workshop, in under 30 minutes. Incorporating 12 customizable grip patterns and a variety of control mechanisms. Zeus can be truly tailored to the patient’s usage profile. In conjunction with the Zeus hand, we are creating a digital ecosystem of mobile and software applications to improve the patient experience via technology and analytics. Zeus is supported by state-of-the-art web-based software that allows configuration of the hand via the web without the need to download applications to a computer. This web software allows you to track the history of the setting changes
Investor
Nov 2023
GRID is the official data platform for League of Legends, VALORANT, Rainbow Six Siege, PUBG, CS2, and Dota2, providing solutions for data sourcing, game data API, analytics, integrity, and distribution in competitive game titles. By enabling access to in-game data, GRID empowers game publishers and data users to professionalize the esports scene, enable new revenue streams, engage fans, and drive innovation in the game ecosystem. The GRID Data Platform unlocks the potential of game data for everyone.
Experience · 7 entries
All (7)
Investments (2)
Founder (5)
2024
Co-Founder and Investor
Jun 2024
Stealth AI Startup is a private community for founders, researchers, and engineers building next-generation AI companies before public launch. Founders tag themselves here to: 🔹 Gain credibility while working in stealth 🔹 Connect discreetly with other AI founders 🔹 Receive inbound interest from early-stage VCs 🔹 Join curated founder-only circles & discussions 🔹 Access hiring pipelines for early team building If youre building an AI startup in stealth, add your profile to the community and tag yourself to this page. Your stealth journey deserves visibility — without revealing your idea. Join the world’s largest AI stealth founder network.
Co-Founder and Investor
Jun 2024
ARK Labs is a developer‑first AI infrastructure platform on a mission to tear down the cost, complexity, and privacy barriers that hold back innovation. From state‑of‑the‑art chatbots and voice apps to stunning Stable Diffusion image generation, our API‑first approach delivers stateful inference across LLMs, embeddings, TTS engines, and diffusion models—all at a tenth of the price you’d pay elsewhere. Your data stays yours. We’re built around rigorous privacy and compliance standards, so you can confidently handle sensitive workloads without compromising on security or control. Our intelligent token management and context‑memory architecture ensure your applications never lose track of the conversation—and you only pay for what matters. Founded by engineers who’ve built and scaled LLM stacks at top AI companies, ARK Labs combines human‑driven support with enterprise‑grade reliability. Customize our APIs to your exact needs and lean on our proven expertise to accelerate every step of your AI journey—without the headaches. Welcome to inference infrastructure that finally puts developers in the driver’s seat.
Investor
Jan 2024
Aether Biomedical was founded on the premise of creating healthcare technology and robotics based on human-centered design. A culture focused on building the next generation of bionic devices, utilizing cutting-edge biosignal processing and software integration. After an expansion in Europe and Asia, we are now launching Zeus to the U.S market, with our U.S. headquarters in Chicago, IL. We have developed the Zeus hand, which is the strongest multi-articulating myoelectric hand in the world, providing 30-40% more grip force (152 Newtons) than existing market options! Apart from being the strongest hand, Zeus is highly robust as well. This is due to its patent-pending impact resistance mechanism which allows the fingers to flex when facing any impact, protecting them from breakage. Zeus is the first bionic hand that you can repair completely, within your workshop, in under 30 minutes. Incorporating 12 customizable grip patterns and a variety of control mechanisms. Zeus can be truly tailored to the patient’s usage profile. In conjunction with the Zeus hand, we are creating a digital ecosystem of mobile and software applications to improve the patient experience via technology and analytics. Zeus is supported by state-of-the-art web-based software that allows configuration of the hand via the web without the need to download applications to a computer. This web software allows you to track the history of the setting changes
2023
Investor
Nov 2023
GRID is the official data platform for League of Legends, VALORANT, Rainbow Six Siege, PUBG, CS2, and Dota2, providing solutions for data sourcing, game data API, analytics, integrity, and distribution in competitive game titles. By enabling access to in-game data, GRID empowers game publishers and data users to professionalize the esports scene, enable new revenue streams, engage fans, and drive innovation in the game ecosystem. The GRID Data Platform unlocks the potential of game data for everyone.
Founder and Managing Partner
2023
We are a Venture Capital fund supporting European tech companies in their global expansion. We focus on companies with a global product, global ambitions, and an amazing team to deliver on these ambitions. We focus on early growth stage (late seed, Series A and B) Our team combines investment (top 10% track record with 20+ exits) and entrepreneurial experience of multiple start-ups and scaling global companies Lets connect!
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Investment activity
2023–2024 · 4 investments
2023120243
Recent (last 2 years)Earlier