SquareOne Venture Capital
VC Fund
Berlin, Germany
SquareOne Venture Capital is a VC fund in Berlin focused on Software and Artificial Intelligence. SquareOne is a venture capital firm focused on pre-seed and seed investments in B2B technology. Typically the first institutional investor on the cap table, SquareOne provides a unique first-customers-guarantee to all its portfolio companies, acting as an entrepreneurial sparring partner and hands-on supporter from day one. With its network of leading executives, tech entrepreneurs, and investors, SquareOne builds the foundation for large and profitable category leaders in B2B software and deep tech businesses across Europe and counts companies like Stripe, Pipedrive, Carbon One, and Wandelbots as part of its portfolio. The Berlin-based VC, formerly known as Paua Ventures, was founded in 2010.
- Total investments:
- 84
- Last investment:
- Lead investor:
- 38%
- Fund size:
- $84M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries SquareOne Venture Capital invests in
Stages SquareOne Venture Capital invests in
Countries SquareOne Venture Capital invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 6 contacts → | |||
Round size
- Seed
- $1M–$7.4M
- Series A
- $4.3M–$20M
- Series B
- $5M–$30M
Investment Focus
Industry
- Software 22 (26%)
- Artificial Intelligence 8 (10%)
- SaaS 6 (7%)
- Machine Learning 6 (7%)
- Information Technology 6 (7%)
Stage
- Seed 30 (36%)
- Series A 22 (26%)
- Series B 8 (10%)
- Pre-Seed 6 (7%)
- Venture - Series Unknown 3 (4%)
Country
- Germany 29 (35%)
- United States 7 (8%)
- Poland 2 (2%)
- Sweden 2 (2%)
- United Kingdom 2 (2%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Charlotte Baumhauer
Principal
|
Principal | Total investments: 2 | Find email | |
Christian Buchenau
Co-Founder, Managing Director & Partner
|
Co-Founder, Managing Director & Partner | Total investments: 29 | Find email | |
Christophe Defforey
Co-Founding Partner
|
Co-Founding Partner | Total investments: 0 | Find email | |
Georg Stockinger
Partner
|
Partner | Total investments: 27 | Find email | |
Levent Altunel
Investment Associate
|
Investment Associate | Total investments: 0 | Find email | |
| See all 6 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| The new standard in B2B transactions: Procuros helps innovative businesses grow — by turning tedious manual B2B transactions into transparent and automated flows. | $22.3M / Series A / Oct 05, 2026 | ||
| Graph is a precision immunology techbio that leverages perturbation modeling from primary patient cell samples combined with multi-omics data to deliver transformative targeted therapies and biomarkers for immune-driven diseases. Graph believes that due to an incomplete understanding of complex immune-mediated diseases, millions of people are leftwithout adequate treatment options - and AI trained with complex disease data can solve this. | $5M / Seed / Jun 22, 2026 | ||
| Our vision is to make high-quality health products accessible for everyone. We will achieve this by enabling creators of health products to build and operate high-quality products with 10x efficiency. We are putting our initial focus on automating compliance and regulatory tasks for medical device manufacturers. Our product offering includesAI-enabled automation of major parts of the data collection, aggregation, evaluation, and reporting for post-market surveillance activities. | $20M / Series A / Feb 19, 2026 | ||
| Ultralytics is the creator of YOLO, the world’s leading open-source real-time vision AI. Trusted by millions of developers, researchers, and enterprises globally, Ultralytics delivers state-of-the-art object detection, segmentation, and tracking models that are lighter, faster, and more accurate.Our mission is to democratize access to advancedAI, offering open-source tools alongside enterprise solutions tailored for industries such as healthcare, security, manufacturing, and autonomous systems.Backed by a global community, Ultralytics combines cutting-edge research with practical deployment to make AI accessible, scalable, and impactful. | $30M / Series A / Sep 17, 2025 | ||
| Circular Carbon Chemistry is a chemical production company. They offer services that include e-fuels, quantum chemistry, circular economy, CO2 recycling, catalysis, green methanol, C1 chemistry, and carbon chemistry. | Seed / Mar 19, 2025 | ||
| Circular Carbon Chemistry is a chemical production company. They offer services that include e-fuels, quantum chemistry, circular economy, CO2 recycling, catalysis, green methanol, C1 chemistry, and carbon chemistry. | $16.4M / Mar 19, 2025 | ||
| Phase is a visual and intuitive digital design tool, reworked for the new age. | $13M / Venture - Series Unknown / Feb 13, 2025 | ||
| PartsCloud is the operating system of spare parts logistics. We are giving every company the means to support their customers with the spare parts they need when they need them by offering them the necessary digital tools and connecting them to a portfolio of logistics service providers. | $5.2M / Seed / Feb 05, 2025 | ||
| Zuriq offers scalable quantum computing hardware based on trapped ions. | $4.2M / Seed / Jan 23, 2025 | ||
| Graph is a precision immunology techbio that leverages perturbation modeling from primary patient cell samples combined with multi-omics data to deliver transformative targeted therapies and biomarkers for immune-driven diseases. Graph believes that due to an incomplete understanding of complex immune-mediated diseases, millions of people are leftwithout adequate treatment options - and AI trained with complex disease data can solve this. | $3.1M / Pre-Seed / Jan 09, 2025 | ||
| See all 84 investments → | |||
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FAQ
What does SquareOne Venture Capital invest in?
SquareOne Venture Capital invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Series A stage. Most of the 84 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does SquareOne Venture Capital invest in?
SquareOne Venture Capital typically joins rounds of $1M–$7.4M at Seed, $4.3M–$20M at Series A and $5M–$30M at Series B. These are whole funding-round sizes, not SquareOne Venture Capital's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds SquareOne Venture Capital took part in.
How do I contact SquareOne Venture Capital?
Public channels for SquareOne Venture Capital include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at SquareOne Venture Capital?
The team at SquareOne Venture Capital includes Charlotte Baumhauer (Principal), Christian Buchenau (Co-Founder, Managing Director & Partner) and Christophe Defforey (Co-Founding Partner), among 6 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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