Marek Olszewski is an angel investor based in Miami, Florida, United States with 2 known investments: Bitmama and ZAF Energy Systems.
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Investment focus
- Stage
- Pre-Seed
Contacts
Marek Olszewski portfolio companies (2)
- Bitmama
- ZAF Energy Systems
Affiliated funds' portfolios
Managing Partner and Co-Founder at Catalus Capital, whose known portfolio counts 8 companies
- 6K
- Sepion Technologies
- Nanoramic Laboratories
- Forge Nano
- Sylvatex
- XL Batteries
- Ionblox
- LiNova Energy
Investor Profile
The listing covers sectors Energy and FinTech, and focus areas Battery Technology and Crypto. Startups operating in these areas may find Marek Olszewski relevant.
Marek Olszewski appears in Pre-Seed rounds across the known deals.
The portfolio and focus above give founders context on whether Marek Olszewski matches their raise.
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Frequently asked questions
Who is Marek Olszewski?
Marek Olszewski is an angel investor based in Miami, Florida, United States with 2 known investments on file, among them Bitmama and ZAF Energy Systems. The sections above list the sectors, stages and firms attached to that record.
What does Marek Olszewski invest in?
Listed sectors include Energy and FinTech; listed focus areas include Battery Technology and Crypto. 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 Marek Olszewski invest at?
The known deals of Marek Olszewski include Pre-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.
Which firm is Marek Olszewski listed at?
Marek Olszewski is listed as Managing Partner and Co-Founder at Catalus Capital. One other person in the database shares a firm with Marek Olszewski.
How do I contact Marek Olszewski?
An email address, a phone number and a LinkedIn page are on file for Marek Olszewski. 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