Elena Petrova
Machine Learning Engineer | Model Lifecycle & MLOps
Summary
Machine Learning Engineer with 5 years of experience building and productionizing models across the full lifecycle. Improved model performance by up to 25% and cut training time by 40% through optimized pipelines, with models serving 8M+ users in production.
ML Skills & Tools
Experience
- Led deployment of a ranking model serving 8M users, lifting click-through rate by 18%.
- Built an MLOps platform (Kubeflow, MLflow) that cut model deployment time from weeks to under a day.
- Improved model accuracy from 82% to 91% via feature engineering and hyperparameter search.
- Implemented automated retraining and drift monitoring, reducing stale-model incidents by 75%.
- Built a patient readmission prediction model achieving 0.86 AUC, adopted across 20 clinics.
- Reduced training pipeline cost by 40% using distributed training on GPU clusters.
ML Projects
Open-source model registry and experiment tracker for small ML teams.
- 2,100 GitHub stars; 80+ companies in community Slack.
Kaggle click-through-rate prediction competition on 40M rows of ad data.
- Finished in top 2% (rank 47/2,400) with an ensemble of gradient-boosted models.