Birgit Rahn-Werner (MRICS)

Serial entrepreneur in the global real estate and infrastructure industry | single family office | experienced board director | strategy | business development | digital transformation

📍 Switzerland🔄 Updated September 2026💼 4 investments📅 8 years investing🗓 Last invested Jul 2023
VC🌍 Switzerland
4
Total investments
1
Early stage
0
Mid stage
0
Late stage
8y
Years active

Portfolio

2 investments · sorted by recency
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Mid stage
Late stage
Advisory Board Member I Shareholder
Mar 2022
Polygraph is an international cybersecurity company based in Berlin, Germany specializing in detecting click fraud, disabling bots, stopping spam leads, and retraining ad networks to deliver genuine traffic. Click fraud is performed by stealth bots that mimic human behavior and fake conversions. This is one of the most significant issues in the digital advertising industry that no one is talking about. We help businesses protect their advertising investments by ensuring they reach real, engaged "human" audiences.
Co-Founder I Shareholder I Advisory Board Member (Proptech Start-Up)
Nov 2018
Realcube is the cloud solution for smart and flexible digitilization in real estate management. Our API-first platform is here to revolutionize the real estate industry. It is a one-stop-shop for intelligent solutions which are adaptive to every client’s individual needs. Realcube’s ecosystem offers a growing number of applications from our valuable and industry-leading partners which aggregate the customer’s data. It is worth mentioning that we keep our customers data privacy and well-being as our top priority. At Realcube, we enable the real estate companies and their contractual partners to consolidate their data in our state-of-the-art platform. This creates a uniform database that gives access to asset managers and other management levels to all relevant information at all times, just a click away! Have we grabbed your interest in our innovative solution for your real estate management? Book a free demo today! For more information feel free to visit our website or contact us at: info@realcube.com
Experience · 6 entries
All (6)
Investments (3)
Founder (1)
Board (2)
2023
Board Member (umbrella association for German real estate)
Jul 2023
The German Property Federation (ZIA) is the leading umbrella association for the property sector. With its registered office in Berlin and a European office in Brussels, it speaks through its more than 300 members, including 30 associations, on behalf of approximately 37,000 industry companies right across the value chain. ZIA provides comprehensive, unified representation for the interests of the real estate sector in all its diversity at both national and European level, including as a member of the Federation of German Industries (BDI) and the German Economic Institute (IW). The President of the association is Dr Andreas Mattner.
2022
Advisory Board Member I Shareholder
Mar 2022
Polygraph is an international cybersecurity company based in Berlin, Germany specializing in detecting click fraud, disabling bots, stopping spam leads, and retraining ad networks to deliver genuine traffic. Click fraud is performed by stealth bots that mimic human behavior and fake conversions. This is one of the most significant issues in the digital advertising industry that no one is talking about. We help businesses protect their advertising investments by ensuring they reach real, engaged "human" audiences.
Board Member (serviced housing for senior citizens)
Jan 2022
bonacasa ist Schweizer Marktführerin für Smart Living, d.h. für vernetztes Wohnen mit Services und Sicherheit. Wir bieten Investoren zahlreiche Mehrwerte, wie beispielweise eine bessere Performance ESG-Ranking dank unserer Standards. Wir gestalten ein komfortables und zukunftsorientiertes Zuhause für alle Generationen, das mehr Lebensqualität und Sicherheit bietet und Menschen zusammenbringt.
2019
Venture Partner I Investor (venture capital in real estate)
Apr 2019
PT1 is a European venture capital platform investing in early-stage tech that’s upgrading the physical world in three core clusters: \ Electrification & energy transition \ Built world AI & automation \ Climate & infrastructure resilience With initial tickets ranging from €300k to €4M, we back the boldest founders across the UK and Europe who are redefining how we build, power and sustain our world. At PT1 we don’t just fund startups - we actively support to add value where it matters most. Combining deep domain expertise with data-driven insights, we leverage our AI-enabled deal flow engine to identify and accelerate future category winners. Championed by our network of 100+ industry experts – from unicorn founders to corporates and industrial veterans – we provide startups with collective wisdom, hands-on guidance, strategic acceleration sprints and the backing needed to scale.
2018
Co-Founder I Shareholder I Advisory Board Member (Proptech Start-Up)
Nov 2018
Realcube is the cloud solution for smart and flexible digitilization in real estate management. Our API-first platform is here to revolutionize the real estate industry. It is a one-stop-shop for intelligent solutions which are adaptive to every client’s individual needs. Realcube’s ecosystem offers a growing number of applications from our valuable and industry-leading partners which aggregate the customer’s data. It is worth mentioning that we keep our customers data privacy and well-being as our top priority. At Realcube, we enable the real estate companies and their contractual partners to consolidate their data in our state-of-the-art platform. This creates a uniform database that gives access to asset managers and other management levels to all relevant information at all times, just a click away! Have we grabbed your interest in our innovative solution for your real estate management? Book a free demo today! For more information feel free to visit our website or contact us at: info@realcube.com
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Investment activity
2018–2023 · 4 investments
201812022220231
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