William ES Rosenfeld

Serial Entrepreneur | Impact-engaged CEO

📍 France🔄 Updated September 2026💼 1 investments📅 15 years investing🗓 Last invested Jan 2011
Operator-angel🌍 France
1
Total investments
1
Early stage
0
Mid stage
0
Late stage
15y
Years active

Portfolio

1 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
2011
Zenpark optimises the use of parking spaces to slow land take. At the crossroads between mobility and real estate, Zenpark designs and operates connected and shared parking services and electric charging points. With its patented tech platform, its market place acclaimed by 650,000 users and its expertise in full digital car parks, Zenpark always provides the best-in-class solutions to lessors, companies and cities that aim at optimising the use of car parks, simplifying access and deploying new mobility services. As of today, Zenpark operates 1,300 car parks and its solutions contribute to save 1,500 metric tons of CO2 every year. Zenpark participates in improving sustainable urban mobility and building smart city.
Experience · 3 entries
All (3)
Investments (1)
Founder (1)
2022
Associate
May 2022
Entrepreneurship in the service of the climate emergency! We identify, fund, and launch 100 companies designed and structured from start to finish to combat greenhouse gases. Our mission: > identify high-impact innovations; > recruit experienced entrepreneurs to transform these innovations into companies with solid business models; > inject financial resources to maximize and accelerate deployment. All innovations are made available as open source. Every euro raised is used to combat climate change. Any individual or organization can join the effort starting at €1 on our website (in just a few minutes) and take concrete action, on a global scale, against climate change. Everything is detailed (and you can contact us) at team-planet.com
2011
Investor
2011
Zenpark optimises the use of parking spaces to slow land take. At the crossroads between mobility and real estate, Zenpark designs and operates connected and shared parking services and electric charging points. With its patented tech platform, its market place acclaimed by 650,000 users and its expertise in full digital car parks, Zenpark always provides the best-in-class solutions to lessors, companies and cities that aim at optimising the use of car parks, simplifying access and deploying new mobility services. As of today, Zenpark operates 1,300 car parks and its solutions contribute to save 1,500 metric tons of CO2 every year. Zenpark participates in improving sustainable urban mobility and building smart city.
2005
CEO & Founder
2005
Founded in 2006, af83 is an innovative agency with offices in Paris and San Francisco, specializing in user experience design, technology, and communication. Our front line is helping companies turn their business digital and deliver innovative services to their customers. We’re obsessive about delivering continuing value to our clients and their users. We have the in-house skills and resources to bring your ideas to life quickly, reliably, and with the highest quality. We’re passionate about software and drawn to solving complex, challenging problems. If it’s easy, it’s not for us. From Fortune 500 companies to innovative startups – and everything in between – weve worked with some of the worlds most prominent companies, including Groupe SEB, SFR, La poste, LaSer, France Télévisions, EDF, Intel, Google, and Canal+.