Justin Shaffer is an angel investor based in San Francisco, California, United States. The known portfolio counts 3 companies: Openvote, Kaufmann Mercantile and MLB Advanced Media.
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Investment focus
- Stage
- Seed
- Focus
- Clean EnergyContentEdTechGovTechOpen SourceSponsorshipSportsTech
Contacts
Justin Shaffer portfolio companies (3)
- Openvote
- Kaufmann Mercantile
- MLB Advanced Media
Investor Profile
The known portfolio sits in sectors Climate, Consumer, Education and SaaS, and focus areas Clean Energy, Content, EdTech and GovTech.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether Justin Shaffer matches their raise.
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Frequently asked questions
Who is Justin Shaffer?
Justin Shaffer is an angel investor based in San Francisco, California, United States with 3 known investments on file, among them Openvote, Kaufmann Mercantile and MLB Advanced Media. The sections above list the sectors and stages attached to that record.
What does Justin Shaffer invest in?
Listed sectors include Climate, Consumer, Education and SaaS; listed focus areas include Clean Energy, Content, EdTech and GovTech. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Justin Shaffer invest at?
The known deals of Justin Shaffer include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact Justin Shaffer?
An email address, a phone number and a LinkedIn page are on file for Justin Shaffer. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal