Investor profile
Joost van der Sluis
Private equity & Investment Director at Bolster Investment Partners
Joost van der Sluis is an Investment Director at Bolster Investment Partners, whose known portfolio counts 10 companies.
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Investment focus
- Stage
- Late-StagePre-Seed
Contacts
Affiliated funds' portfolios
Investment Director at Bolster Investment Partners, whose known portfolio counts 10 companies
- WriteSea
- BTG Positioning Systems
- Careflex Zorg Groep
- Dinnissen
- Esschert Design
- Giesen Coffee Roasters
- Infoplaza
- Mark Climate Technology
- Oceanwide Expeditions
- Optima Cycles
Investor Profile
Founders in the listed sectors Climate, Commerce, Healthcare and Travel, and focus areas Consumer Goods, Electric Vehicle, Food & Beverage and Home & Garden fall inside that listing.
Stage-wise, the deals at Bolster Investment Partners cluster around Late-Stage and Pre-Seed rounds.
The firm portfolio and the focus above give founders context on whether Joost van der Sluis matches their raise.
Colleagues at Bolster Investment Partners
Hanneke Modderman
Investor
Amsterdam, Netherlands
Joost Bakhuizen
Investor
Amsterdam, Netherlands
Michiel van Wissen
Investor
Amsterdam, Netherlands
Willem de Rooij
Investor
Netherlands
Ted Bolsius
Investor
Amsterdam, Netherlands
Robbert van Kampen
Investor
Amsterdam, Netherlands
Martijn Fakkert
Associate
Amsterdam, Netherlands
Paul Vogelzang
Investor
Amsterdam, Netherlands
Sara van Assen
Investor
Randstad, Netherlands
Mark van Rijn
Managing Partner
Amsterdam, Netherlands
Frequently asked questions
Who is Joost van der Sluis?
Joost van der Sluis is a private equity investor based in Amsterdam, North Holland, Netherlands, listed as Investment Director at Bolster Investment Partners. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Joost van der Sluis personally.
What does Joost van der Sluis invest in?
Listed sectors include Climate, Commerce, Healthcare and Travel; listed focus areas include Consumer Goods, Electric Vehicle, Food & Beverage and Home & Garden. 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 Joost van der Sluis invest at?
Bolster Investment Partners appears in Late-Stage and Pre-Seed rounds across its known deals, and Joost van der Sluis is listed there as Investment Director. 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 Joost van der Sluis listed at?
Joost van der Sluis is listed as Investment Director at Bolster Investment Partners. 10 other people in the database share a firm with Joost van der Sluis.
How do I contact Joost van der Sluis?
An email address, a phone number and a LinkedIn page are on file for Joost van der Sluis. 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