Kevin Osei
Data Scientist — Machine Learning
kevin.osei@example.com(555) 570-2218Denver, COGitHub: github.com/kosei-dsLinkedIn: www.linkedin.com/in/kevinosei
Summary
Data scientist with 5 years shipping ML in production for insurance and fintech. Built the claims-triage model routing 60% of volume automatically at 98% precision, saving an estimated 11,000 adjuster hours/year.
Experience
Data Scientist II
Aug 2022 – Present- Built and shipped a claims-triage classifier (XGBoost) routing 60% of incoming claims automatically at 98% precision, saving an estimated 11,000 adjuster hours/year
- Led migration of feature engineering to a feature store (Feast), cutting model-training data leakage incidents to zero and halving iteration time
- Designed the champion/challenger framework for pricing models, catching a 4% loss-ratio degradation before full rollout
- Partner with actuarial and engineering to move 3 models from notebook to monitored production endpoints (SageMaker)
Data Scientist
Jun 2020 – Jul 2022- Developed credit-limit increase propensity model that lifted acceptance 9% within approved risk bands
- Built churn early-warning system on deposit accounts, feeding retention offers with 3.2x ROI over control
- Automated model documentation for model-risk review, cutting validation cycle from 6 weeks to 2
Skills
Modeling: Python (scikit-learn, XGBoost, PyTorch), Causal inference and uplift modeling, Experiment design, NLP (classification, embeddings)
Production: SQL, SageMaker, Feast, Airflow, MLflow, Docker, Model monitoring