Mike Rosengarten
General Partner at Builders VC
Nashville-Davidson, Tennessee, United States
Summary
👤
Senior🎓
Top SchoolMike Rosengarten is a founder-turned-investor and General Partner at Builders.VC, leading Series A investments in B2B SaaS, intelligent enterprise, applied AI, and regulated tech with 14 years of product and engineering experience. He previously founded and scaled Camino to acquisition and was an early engineering and product leader at OpenGov, helping build citizen-facing government software that attracted top-tier investors. Mike blends hands-on technical chops—contributing bug fixes and test coverage to notable open-source Ruby tooling like roo—with strategic operational experience as CEO and board member across multiple startups. Based in San Francisco and Nashville, he writes pre-seed checks via 1121.VC and favors warm intros (referrals) as the best way to connect.
14 years of coding experience
11 years of employment as a software developer
Bachelor of Science - BS Computer Science, Bachelor of Science - BS Computer Science at UC Santa Barbara
Github Skills (1)
ruby10
Programming languages (7)
Github contributions (5)
roo-rb/roo
Oct 2013 - Nov 2013
Roo provides an interface to spreadsheets of several sorts.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits in 1 month
Contributions summary:Mike focused on improving the `roo-rb/roo` library, which provides an interface to spreadsheets. Their contributions included correcting logical errors related to padding cells in the `each_row_streaming` function, and adding tests to verify this default padding behavior. Additionally, the user removed non-essential comments to enhance code clarity and refactored parts of the excelx.rb file. These changes show a focus on correctness and usability of the library.
xlsxexcelreaderxlssortsroo
ephekt/PeopleFinder
Jan 2012 - Mar 2013
Contributions:11 commits in 1 year 1 month
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