A veteran of Poland’s startup scene, Mariusz founded GoldenLine and DocPlanner. Alongside running a unicorn-scale company (DocPlanner), he has been an angel in numerous startups including Preply, Shoplo, Positionly, and Brainly.
He often provides both capital and guidance on scaling to international markets. Associated startups: Preply, Shoplo, Positionly, Brainly, Allani, among others.
Warsaw, Poland
Angel Investor
Seed to Series A
/poland/angel-investor/mariusz-gralewski
Tier-1 venture capital firm focused on early-stage software startups from Poland and CEE. Inovo invests from pre-seed to seed, typically backing founders targeting global markets across SaaS, developer tools, AI, and digital health.
Warsaw-based medtech startup developing AptaSense, a bedside analyzer for near real-time therapeutic drug monitoring. The platform uses disposable strips to measure antibiotic and protein levels in around one minute to support precise dosing in sepsis and critical care.
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.
Cloud contact center and customer communications software provider serving enterprise and mid-market teams with omnichannel support workflows.
Founded 2016. Entrepreneur-friendly fund backing product-led Spanish tech startups.
Publicly listed VC and accelerator operator (LUISS EnLabs) focused on pre-seed and seed digital startups in Italy.
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