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Jeff Rosen

Managing Partner at Broom Ventures

Jeff Rosen is the Founder and Managing Partner at Broom Ventures, a venture capital firm he established in 2019.14 Based in San Francisco, California, Rosen is an experienced entrepreneur, COO, and software engineer who invests in early-stage technology companies.12

Career Highlights

  • Broom Ventures: Founded in 2019, where he currently serves as Managing Partner.1
  • Rhombus: Co-founder and COO from 2018 to 2021. The company was later acquired by Chainlink.1
  • Sparta Science: Senior Software Engineer from 2017 to 2018.1
  • Sourcery Technologies, Inc.: Senior Software Engineer from 2015 to 2016.1
  • Nasdaq Private Market: Software Engineer from 2014 to 2015.1
  • Teach For America: Corps Member from 2011 to 2013.1
  • Aspire Public Schools: AP Calculus and Precalculus Teacher from 2011 to 2013.1

Education

Rosen holds a B.A. from Yale University, which he attended from 2007 to 2011.1

Investment Focus

At Broom Ventures, Rosen typically writes checks of $250,000 to $750,000 for early-stage companies, with a sweet spot of around $500,000.4 The firm focuses on pre-seed and seed-stage founders in the technology sector.3

Notable Investments

Some of Rosen's investments include Fidu, Kapital, ProductWind, and Writesonic.4

Jeff Rosen brings a unique blend of technical expertise, entrepreneurial experience, and educational background to his role as a venture capitalist, making him well-equipped to identify and support promising early-stage technology companies.

Highlights

Nov 1 · 50pros.com
Investor Database (Free) | List of 1,000+ Investors (2025) - 50Pros
Oct 1 · thenetwork.com
Jeff Rosen - The Network
Jan 24 · broom.ventures
Companies — Broom Ventures
Oct 11 · signal.nfx.com
Jeff Rosen's Investing Profile - Broom Ventures Managing Partner
"Broom Ventures" with Jeff Rosen - Angel Invest Boston
"Broom Ventures" with Jeff Rosen - Angel Invest Boston
Broom Ventures | Institution Profile - Private Equity International

Related Questions

What are some of the most successful investments made by Broom Ventures?
How did Jeff Rosen transition from being a software engineer to a venture capitalist?
What unique strategies does Broom Ventures use in their early-stage investments?
Can you provide more details about Jeff Rosen's role at Rhombus and its acquisition by Chainlink?
What are some of the key companies in Jeff Rosen's investment portfolio?
Jeff Rosen
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Location

San Francisco, California, United States