Managing Partner
S20 FundCheck size: $100K-$300K typical investments, as published by S20 Fund.
Marcin Jan Fejfer invests or supports investment work through S20 Fund's published strategy: Back Baltic and Central European technology teams at pre-seed, focusing on essential people-and-planet challenges and combining private capital with active founder support.
Technically strong or execution-driven teams, clear value creation, global or regional leadership potential and founders open to active collaboration.
The fund targets very early technology businesses it understands; companies outside pre-seed, without sound economics or unwilling to work actively with investors are less aligned.
Show the founder advantage, urgent problem, early evidence, economics, market path, syndicate plan and the product or market milestone a $100K-$300K check funds.
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Marcin Jan Fejfer is a current Managing Partner at S20 Fund, according to the fund's official roster. This profile deliberately avoids inferring prior employers, education, deal attribution or check-writing authority not stated by the official source.