Marcin Kosiński
Founder & Head at Why R?
Warsaw, Masovian Voivodeship, Poland
Summary
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SeniorMarcin Kosiński is a founder and community-focused data scientist with a decade of experience bridging statistical rigor and practical ML applications. With a master's in Mathematical Statistics and Data Analysis, he specializes in large-scale real-time learning, personalized recommendations, and survival analysis, and currently works on recommender systems at ProData Consult. He founded Why R?, organizing a global conference, webinars, meetups, and hackathons to grow the R ecosystem across Europe. Previously he led quantitative marketing analyses and global surveys at Gradient Metrics, and helped sustain pan-European data talks through X-Europe Webinars during the COVID disruption. Based in Warsaw, he combines hands-on R expertise with community building—often surfacing new practitioners and ideas that feed into applied recommendation and marketing analytics.
10 years of coding experience
5 years of employment as a software developer
Github Skills (10)
syntax-highlighting9
poker6
wix4
adobe-experience-manager4
artemis3
sarif3
wifi3
artificial-intelligence1
api1
captcha1
Programming languages (3)
Github contributions (5)
RemarkableSolutionsAdmin/AntiCaptchaApi.Net
May 2022 - Feb 2023
Contributions:37 commits, 66 pushes in 9 months
RemarkableSolutionsAdmin/Selenium.AntiCaptcha
Dec 2022 - Feb 2025
Contributions:21 pushes, 1 branch in 2 years 2 months
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