Zygmunt Zawadzki
Senior Data Engineer Software Developer
Gdynia, Pomeranian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolZygmunt Zawadzki is a Senior Software Engineer and Machine Learning specialist with 13 years of experience building statistical and production-ready ML systems across healthcare, fintech, retail, and biotech. He combines deep statistical training with hands-on engineering—comfortable shipping code, managing Git workflows, and detecting subtle pitfalls like overfitting, data snooping, and look-ahead bias. His background includes senior roles at GE Healthcare, Ardigen, and currently Affirm, plus freelance work delivering R/Shiny analytics tools and custom filtering for high-frequency financial data. Colleagues rely on him for rigorous, auditable models that bridge research and production, and for making complex analytics accessible to non-technical stakeholders. Based in Gdynia, Poland, he brings a practical mix of econometrics, time-series expertise, and product-minded implementation.
13 years of coding experience
9 years of employment as a software developer
Master's Degree Business Analytics, Master's Degree Business Analytics at Krakow University of Economics
English, Polish
Stackoverflow
251reputation
9kreached
14answers
0questions
Github Skills (52)
preprocessing10
r-package10
feature-selection10
r10
sparse-matrix10
drag-and-drop10
shiny10
exploratory-data-analysis10
plot10
grid-layout10
rcpp10
entropy10
weka10
dataflow-programming9
algorithms9
Programming languages (3)
Github contributions (5)
cran/DepthProc
Aug 2014 - Feb 2022
Contributions:14 commits in 7 years 6 months
mi2-warsaw/FSelectorRcpp
Feb 2016 - Jan 2021
Rcpp (free of Java/Weka) implementation of FSelector entropy-based feature selection algorithms with a sparse matrix support
Contributions:330 commits, 15 PRs, 199 pushes in 5 years
feature-selectionjavarcppsparse-matrixweka
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