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Joule Ventures is a venture capital firm founded in 2010, originally as Janvest Capital Partners, to support Israeli entrepreneurs in commercializing enterprise-grade solutions in U.S. markets. The firm rebranded to Joule Ventures in 2020, reflecting its commitment to this mission. Operating with a partner-only approach, Joule Ventures provides direct access to decision-makers and resources for founders, ensuring a streamlined investment process.
Headquartered in the United States with a significant presence in Israel, Joule Ventures has a total AUM of over $65 million, primarily from its Fund II, which was announced in August 2025. The firm has a portfolio of 48 active companies, focusing on pre-seed and seed stage investments. Joule Ventures emphasizes hands-on support for its portfolio companies, particularly in U.S. market entry and customer engagement.
Joule Ventures invests in Israeli founders developing solutions that address inefficiencies in the enterprise sector. The firm primarily targets pre-seed and seed stage companies, with check sizes typically ranging from $1 million to $3 million. Their investment strategy includes providing hands-on support in U.S. market validation, design partner engagement, early customer connections, core team recruitment, and acceleration towards Series A funding.
The sectors of interest for Joule Ventures include SaaS, cybersecurity, fintech, artificial intelligence, DevOps, and data enablement. The firm explicitly avoids investments in consumer applications, non-Israeli founders, companies without clear enterprise customer demand, pure hardware plays, and non-technical founding teams. This focused approach allows Joule Ventures to effectively support its portfolio companies in navigating the complexities of the U.S. market.
Joule Ventures has invested in a diverse range of notable companies, including:
This portfolio reflects Joule Ventures' commitment to supporting innovative solutions that enhance enterprise efficiency and security.
Brian Rosenzweig: Co-Founder & Partner. Brian has extensive experience in venture capital and has been instrumental in shaping Joule Ventures' investment strategy. He is based in Atlanta, GA.
Dafna Winocur Biran: Co-Founder & Partner. Dafna previously served as Principal at 83North and Head of Israel Investment at Innovation Endeavors. She brings over 15 years of venture capital experience and is based in Tel Aviv.
Daniel Frankenstein: Partner. Daniel has a strong background in technology and venture capital, contributing to Joule Ventures' focus on enterprise solutions.
To pitch Joule Ventures, founders should reach out via email at hi@joulevc.com. It is advisable to include a pitch deck that outlines the business model, market opportunity, and traction achieved to date. Joule Ventures prefers concise and clear presentations that highlight the problem being solved and the solution offered.
Response times may vary, but founders can expect a timely review of their submissions. Warm introductions are beneficial but not mandatory.
In August 2025, Joule Ventures announced the launch of Fund II, which has a total size of $65 million. This fund will continue the firm's focus on supporting Israeli entrepreneurs in the U.S. market.
Joule Ventures has been actively investing in notable companies that address inefficiencies in the enterprise sector, with over 40 seed rounds led to date. Their portfolio includes innovative firms like Enterprise IAM, Pipeliless, and RAN Automation, showcasing their commitment to supporting Israeli founders.
What are Joule Ventures' investment criteria?
Joule Ventures focuses on Israeli founders developing enterprise-grade solutions. They primarily invest in pre-seed and seed stage companies with validated problems and initial traction. The firm looks for teams that can demonstrate product-market fit and have a clear path to U.S. market entry.
How can I pitch Joule Ventures?
Founders can reach out via email at hi@joulevc.com. It is recommended to include a concise overview of the business, the problem being solved, and any traction or customer engagement achieved to date.
What makes Joule Ventures different from other VCs?
Joule Ventures operates with a partner-only model, providing direct access to decision-makers. This structure allows for more personalized support and quicker decision-making processes for founders.
What is the geographic focus of Joule Ventures?
The firm primarily invests in North America, specifically targeting Israeli entrepreneurs looking to enter the U.S. market.
What is the typical check size for investments?
Joule Ventures typically invests between $1 million and $3 million in their portfolio companies, focusing on pre-seed and seed stage investments.
What kind of support do portfolio companies receive?
Joule Ventures provides hands-on support in U.S. market validation, customer connections, team recruitment, and acceleration towards Series A funding, ensuring that portfolio companies have the resources they need to succeed.
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