CEO/co-founder of Klarna, Sebastian has Polish roots and has made angel investments in Poland. He participated in funding for Warsaw-based custom packaging startup Packhelp, among others.
His presence brings a bit of Scandinavian fintech savvy to the Polish ecosystem. Associated startups: Packhelp (and likely other Polish e-commerce enablers).
Warsaw, Poland
Angel Investor
Seed to Series A
/poland/angel-investor/sebastian-siemiatkowski
MCI Capital is a Warsaw-listed digital private equity and growth investor focused on scaling technology leaders in Central and Eastern Europe. Founded in 1999, the firm invests primarily in SaaS, fintech and insurtech, e-commerce marketplaces, and digital infrastructure, with additional focus on climate tech opportunities.
Active since 2018. Smart-tech accelerator scaling startups across Central and Eastern Europe with programs like AccelStart, AccelBoost, and Green Impact. Support: specialized accelerators, corporate partner network, mentoring. Scope: Regional (CEE).
Founded 2018. Growth-stage investor backing enterprise software and fintech scale-ups from Central Europe.
Summit at the Mediterranean Conference Centre with 2,500+ attendees and 400+ investors. Features the Big Pitch Competition with a prize package worth over EUR 1M and strong media visibility.
Founded 2017. Marketplace-focused fund investing at seed and pre-Series A across Europe.
Foodtech company focused on premium boxed diet subscriptions and personalized meal plans for consumers in Poland.
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