An angel investor and operator angel based in Austin, Texas, United States, Steli Efti has one known investment, Supercast.
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Investment focus
Contacts
Steli Efti portfolio company (1)
- Supercast
Affiliated funds' portfolios
Senior Venture Partner at Pioneer Fund, whose known portfolio counts 39 companies
- Milk Video
- Atmos
- Hubble
- Atlas
- Taiv
- Thoughtly
- Alien
- Fractile
- Depot
- Harper
- Bolna
- Ellipsis
- and 27 more
Investor Profile
Founders in the listed sectors Consumer, FinTech, Healthcare and SaaS, and focus areas Biotech, CRM, Cloud Infrastructure and E-Commerce will recognize the pattern in this portfolio.
Steli Efti is listed for Pre-Seed, Seed and Series A rounds in the database.
The portfolio and focus above give founders context on whether Steli Efti matches their raise.
Colleagues at Pioneer Fund
Showing 20 of 90
Josue Gio
Venture Partner
Mexico City
Dave Messina
General Partner
San Diego, United States
Ti Zhao
Senior Venture Partner
San Francisco, United States
Ian Burgess
Venture Partner
Toronto, Canada
Deepanshu M.
Venture Partner
New York, United States
Nicholas Goldner
Venture Partner
San Francisco, United States
Sherwin Gandhi
Venture Partner
Austin, United States
Steve Johnston
Venture Partner
Austin, United States
Michael Heinrich
Venture Partner + Angel Investor
Singapore
Afraj Gill
Limited Partner
San Francisco, United States
Justin Olshavsky
General Partner
United States
Chris Williams
Venture Partner
Boise, United States
Aymeric Rabot
Venture Partner
Tampa, United States
Julien Brissonneau
Venture Partner
Mountain View, United States
Jonathan Tang
Investment Partner/LPAC Member
San Mateo, United States
Rebecca Todd
Investment Advisory Panel Member
Oxford, United Kingdom
Newsha Ghaeli
Venture Partner
Washington, United States
Nimit Mehra
Venture Partner
United States
Jaclyn Ling
Venture Partner
New York, United States
Matt Schiller
Senior Venture Partner
San Francisco, United States
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Frequently asked questions
Who is Steli Efti?
Steli Efti is an angel investor and operator angel based in Austin, Texas, United States with one known investment on file, Supercast. The sections above list the sectors, stages and firms attached to that record.
What does Steli Efti invest in?
Listed sectors include Consumer, FinTech, Healthcare and SaaS; listed focus areas include Biotech, CRM, Cloud Infrastructure and E-Commerce. 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 Steli Efti invest at?
The database lists Steli Efti for Pre-Seed, Seed and Series A 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.
Which firm is Steli Efti listed at?
Steli Efti is listed as Senior Venture Partner at Pioneer Fund. 90 other people in the database share a firm with Steli Efti.
How do I contact Steli Efti?
An email address, a phone number and a LinkedIn page are on file for Steli Efti. 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