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orlovtsu/README.md

Senior Data Scientist | Applied ML | Decisioning & Risk

I design and deploy machine learning systems that connect raw data to measurable business impact.

My work spans the full applied ML lifecycle: signal discovery, feature engineering, model development, validation, calibration, monitoring, explainability, and deployment support. I focus on building reliable, interpretable, and production-minded systems where data quality, model stability, and decision quality matter.

Core strengths

  • decisioning and risk modeling
  • feature engineering from noisy, messy, or irregular data
  • model validation, calibration, and performance diagnostics
  • monitoring drift, stability, and degradation over time
  • document intelligence and OCR reliability assessment
  • translating technical results into operational decision support
  • building reproducible ML workflows with strong engineering discipline

Technical focus

  • supervised learning and probabilistic modeling
  • tabular and behavioral data, transaction intelligence, and risk signals
  • calibration, thresholding, and policy-aware decisioning
  • model lifecycle governance, quality checks, and monitoring
  • data quality assessment, anomaly detection, and signal validation
  • explainability and practical interpretability for stakeholders

Where I add value

  • credit and default-related decision support
  • financial behavior and transaction signal extraction
  • document understanding and extraction pipeline reliability
  • model performance under shift, noise, and imperfect data
  • building trust in ML systems through measurement, monitoring, and transparent evaluation

Connect

I work at the intersection of data science, machine learning engineering, and production decision systems.


Highlights

  • end-to-end ML lifecycle ownership
  • strong emphasis on quality, calibration, and monitoring
  • production-minded data science and ML engineering
  • applied work across risk, behavioral analytics, and document intelligence
  • focus on measurable impact, interpretability, and reliable decision support

Pinned Loading

  1. cashflow-intelligence-lab cashflow-intelligence-lab Public

    A domain-neutral synthetic lab for transaction normalization, income-cadence detection, and cashflow feature engineering.

    Python

  2. default-risk-lifecycle-lab default-risk-lifecycle-lab Public

    Synthetic default risk model lifecycle lab with calibration, drift monitoring, label governance, fairness diagnostics, and rollback decisions.

    Python

  3. document-ai-reliability-lab document-ai-reliability-lab Public

    Synthetic document extraction reliability benchmark with controlled OCR corruption, field metrics, quality gates, and FastAPI.

    Python

  4. open-decisioning-lab open-decisioning-lab Public

    Domain-neutral calibrated ML decisioning reference with synthetic data, policy separation, explainability, evaluation reports, Docker, CI, and FastAPI.

    Python

  5. analytics-platform-portfolio analytics-platform-portfolio Public

    Generic analytics engineering examples: Airflow, dbt, PostgreSQL and BI design discussions. Illustrative patterns and trade-offs.

  6. orlovtsu.github.io orlovtsu.github.io Public

    My Data Scientist portfolio

    HTML