Michał Janiak
Senior Data Scientist
Gdańsk, Pomeranian Voivodeship, Poland
Summary
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Senior🎓
Top SchoolMichał Janiak is a Senior Data Scientist with over a decade of experience turning mathematical theory into practical solutions that drive business value across banking, insurance and e-commerce. He has a strong track record in credit risk modeling, AutoML pipelines and model validation—recently delivering cost savings by reusing older data without materially sacrificing prediction quality and boosting sales campaign effectiveness by 40%. Comfortable in R (enthusiast), SQL and VBA with working knowledge of Python and Jupyter, he builds production-ready models for limit increases, originations and portfolio management. He combines hands-on analytics (ABT creation, Shiny dashboards, geo-analysis) with leadership experience managing analyst teams and presenting to executives. An academic by training who taught stochastic processes and mathematical modeling, he brings rigorous probabilistic thinking to practical product and financial outcomes. Outside work he channels teamwork and strategy from years as a national-level futsal coach and a current sailing enthusiast, signaling strong planning and leadership under pressure.
8 years of coding experience
7 years of employment as a software developer
Master of Science (MSc), Faculty of Applied Physics and Mathematics, Financial Mathematics, 2007, Master of Science (MSc), Faculty of Applied Physics and Mathematics, Financial Mathematics, 2007 at Gdańsk University of Technology
Github Skills (13)
scalatest9
time-series6
scala5
sink2
interpreter2
cassandra2
scripting-language2
timeseries-database1
compiler1
machine-learning1
kafka1
hydra1
script-engine1
Programming languages (3)
Github contributions (5)
carldata/swmm5
Mar 2021 - Mar 2021
Contributions:1 review, 1 PR, 1 push in 1 day
carldata/timeseries
Sep 2019 - Jan 2022
Time Series library for Scala
Contributions:5 reviews, 15 PRs, 15 pushes in 2 years 4 months
scalatestscala3scalatime-seriestimeseries
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