Marcin Fejfer
Managing Partner / Co-Founder at S20 Fund
Greater Poland Voivodeship
Marcin Fejfer, Managing Partner / Co-Founder at S20 Fund is an active investor based in Greater Poland Voivodeship. This profile covers what Marcin Fejfer backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPECorporate VC
- Stages
- Early Stage VenturePre Seed
- Invests in
- Artificial IntelligenceFintechHealthcare & BiotechDigital Health & HealthTechSaaS & EnterpriseConsumer & RetailConsumer Goods (CPG)Climate & Energy
- Location
- Greater Poland Voivodeship
- Typical check
- $275K
- Past investments
- 40
Notable investments
upSWOT
FANPOINT
Legimi
bNesis
Transparent Data
DevSkillerSpeedUp Venture Capital Group
BookLikes
Symu.coProdio Omni3D
AbsolventHow to reach Marcin Fejfer
Angels and operators like Marcin Fejfer reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
Connect with Marcin Fejfer
Frequently Asked Questions
What does Marcin Fejfer invest in?
Marcin Fejfer invests in Artificial Intelligence, Fintech, Healthcare & Biotech and Digital Health & HealthTech, typically at Early Stage Venture and Pre Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Marcin Fejfer invest at?
Marcin Fejfer typically invests at Early Stage Venture and Pre Seed. Lead with traction that fits the stage when you reach out.
What is Marcin Fejfer's typical check size?
Marcin Fejfer typically writes checks around $275K. Use it as a signal for whether your raise fits their stage.
How do I contact Marcin Fejfer?
Unlock Marcin Fejfer's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.