foxypandas

Data Scientist·ML Engineer

Building ML systems from data exploration to deployment — models with a measurable business outcome, shipped as reproducible code and services.

Selected projects

04
Industrial ML · Ridge · SHAP

Steel Temperature Prediction

Predicting final alloy temperature in ladle processing so a steel plant can cut heating energy. Event-level data from seven sources aggregated per batch; Ridge beat tuned LightGBM and RF on CV; stability confirmed with bootstrap and Wilcoxon, features explained with SHAP.

MAE 6.0 °C target ≤ 6.8 · test set used once
Repository →
NLP · Transformers · BERT

Disaster Tweets

Systematic comparison of transformer fine-tuning strategies for binary tweet classification: DistilBERT → BERT-base, heads, schedules, ensembling. Honest score without the leaked original dataset that inflates the top of the leaderboard.

Kaggle top 9% F1 0.840 · rank 64
Repository →
Causal ML · S/T-learners · FastAPI · Docker

Uplift Modeling — X5 RetailHero

Who should actually get the SMS? Uplift models on retail A/B data estimate the incremental effect of a message per customer; SHAP explains who responds; a profit model turns scores into a targeting policy. Served as a FastAPI endpoint in Docker with MLflow tracking.

uplift@10% 0.117 +26.7k ₽ on holdout · 90% fewer messages
Repository →
Decision analysis · Bootstrap

Oil Well Region Selection

Choosing where to drill: reserve prediction per well, selection of the best sites, and a bootstrap profit distribution per region. Picks the only region that satisfies the business risk threshold instead of the one with the highest point estimate.

1.5% loss risk 452M ₽ expected profit · threshold < 2.5%
Repository →

Stack

used in the projects above

Modeling

  • scikit-learn
  • CatBoost · LightGBM
  • PyTorch · HuggingFace
  • Uplift · causal inference
  • Time series

Data & analysis

  • Python · pandas · Polars
  • SQL
  • Bootstrap · A/B tests
  • SHAP
  • Matplotlib · Plotly

Engineering

  • FastAPI · Pydantic
  • Docker · Compose
  • MLflow
  • Git · pytest
  • Airflow

Practice

  • Leak-free validation
  • Confidence intervals
  • Model cards
  • Reproducible pipelines
  • Monitoring

Contact

open to DS / MLE roles

I like problems where the model is only half of the answer — the other half is the decision it drives and the service that delivers it.

Happy to talk about uplift and causal ML, NLP, industrial data, or the practical side of shipping models.