Stefan Vujović
Senior Data Scientist
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolStefan Vujović is a Senior Data Scientist based in Berlin with nearly a decade of experience building recommendation systems and end-to-end ML solutions across e-commerce, mobility, and consulting. He has driven measurable business impact—leading personalization and incentive systems at FREENOW that yielded significant cost efficiencies and CTR uplifts—and repeatedly taken models from design through API integration and experimentation. Comfortable in cross-functional teams, Stefan has scaled teams by hiring and mentoring senior and junior engineers while contributing to product strategy. A frequent conference speaker and writer on Medium, he combines research-rooted rigor (4TB+ data processing in academic projects) with hands-on engineering using Python, Airflow, and production microservices.
10 years of coding experience
8 years of employment as a software developer
Master's degree Web and Data Science, Master's degree Web and Data Science at University of Koblenz and LandauBachelor's degree Information Systems and Technologies, Bachelor's degree Information Systems and Technologies at University of BelgradeHigh School Natural Sciences, High School Natural Sciences at Third Belgrade Gymnasium
Serbian, English, German
Github Skills (23)
wikipedia10
neo4j9
knowledge-graph8
survey8
prompt7
graph-database7
nlp7
openai5
ai5
open-source5
large-language-models4
gpt4
graphql4
factorization3
chatgpt3
Programming languages (2)
Github contributions (5)
sVujke/nba-player-positions-machine-learning
Oct 2015 - Feb 2016
Contributions:71 commits, 2 PRs, 51 pushes in 4 months
sVujke/img_classification_deep_learning
Nov 2017 - Apr 2018
Contributions:103 commits, 7 pushes, 1 branch in 4 months
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