Founder of Filmaster and co-founder of VC fund SMOK Ventures, Borys also spearheads the SMOK Angels network. A former coder turned investor, he has nurtured dozens of early-stage Polish startups. Borys is known for community building (e.g. Reaktor Warsaw) and has invested in startups across AI, gaming, and software. He co-leads an angel fund, so he straddles angel and VC roles. Associated startups: Included via SMOK portfolio (e.g. Spin.ai, Incentive Games) and through SMOK Angels network.
Warsaw, Poland
Angel Investor
Pre-Seed to Series A
/poland/angel-investor/borys-musielak
Launched 2018. Poland's first MarTech-focused accelerator run by Knowledge Hub and GroupM; targets AI in marketing, adtech, and influencer platforms. Support: workshops, media-industry mentoring, pilot client access, and sales support. Scope: National.
Accelerator by Budimex for construction-tech startups in green construction, AI, robotics, and site automation. Offers pilots on construction sites, industry mentors, and potential investment or procurement. Scope: Regional (Poland and CEE).
DeepL is a Cologne-based AI translation company founded in 2017 by CEO Jarosław Kutylowski. Renowned for its neural machine translation quality, DeepL quickly surpassed competitors in accuracy and nuance. The company’s cloud platform serves over 100,000 business and government customers worldwide, including enterprises like Zendesk and Deutsche Bahn. DeepL achieved unicorn status in 2023 with a €1 billion valuation and continued to grow explosively – by early 2025 it had raised $410 million (led by investors like Index Ventures and Atomico) and reached a $2 billion valuation. In late 2025, reports emerged that DeepL is considering an IPO amid surging revenue, which doubled year-on-year to $185 million in 2024. DeepL’s core product is an AI-driven translator supporting 30+ languages, used for real-time document and content translation. The firm also launched DeepL Write to improve monolingual writing and an AI Agent to automate business tasks. As of 2025, DeepL is recognized as one of Europe’s premier AI startups, combining cutting-edge NLP research with a fast-growing SaaS business. The company’s success – valued at $2 billion and poised for a public offering – underscores Europe’s strength in deep-tech innovation.
Founded 2006. Growth-stage investor in digital media, AI, and software scale-ups across Europe.
AI-enabled business management platform combining ERP, HR, finance, and projects for SMBs.
Founded 2019 by an ex-Caixa Capital team. Independent VC investing in Iberian tech startups across fintech, AI, and marketplaces.