Joanna Graiver is an Investor at OpenOcean, whose known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Investor at OpenOcean, whose known portfolio counts 10 companies
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Investor Profile
Joanna Graiver is listed against sectors AI, FinTech and SaaS, and focus areas API, Cloud Infrastructure, Data Analytics and Database in the database.
Stage-wise, the deals at OpenOcean cluster around Pre-Seed, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Joanna Graiver is worth approaching.
Colleagues at OpenOcean
Michael Widenius
Partner
Tuusula, Finland
Ralf Wahlsten
Partner
Helsinki, Finland
Sam H.
Partner
United Kingdom
Tony Nysten
Partner
London, United Kingdom
Mirva Laatunen
Investor
Finland
Tom Henriksson
General Partner
Helsinki, Finland
Oliver J.
Venture Capital
London, United Kingdom
Naureen Zahid
Investor
London, United Kingdom
Cyrus Hessabi
Investor
London, United Kingdom
Frequently asked questions
Who is Joanna Graiver?
Joanna Graiver is a venture capital investor based in London, England, United Kingdom, listed as Investor at OpenOcean. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Joanna Graiver personally.
What does Joanna Graiver invest in?
Listed sectors include AI, FinTech and SaaS; listed focus areas include API, Cloud Infrastructure, Data Analytics and Database. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Joanna Graiver invest at?
OpenOcean appears in Pre-Seed, Seed and Series A rounds across its known deals, and Joanna Graiver is listed there as Investor. 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 Joanna Graiver listed at?
Joanna Graiver is listed as Investor at OpenOcean. 9 other people in the database share a firm with Joanna Graiver.
How do I contact Joanna Graiver?
A LinkedIn page is on file for Joanna Graiver. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal