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Semen Dyshkant

@semendyshkant

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Machine Learning Engineer at Mindscore who doubled fraud detection at a betting company with a production ML service.

Russian Federation

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At Mindscore, I built and deployed an ML service for a betting company that doubled its fraud detection rate and reduced financial losses. I also launched a personalized cashback system based on customers’ order histories.

I built a RAG system for travel search and recommendations, and developed ML solutions for social risk assessment and retail marketing models. In the oil and gas sector, I created a FastAPI microservice that uses large language models to classify well reports.

Experience

Work history, roles, and key accomplishments

Current

Machine Learning Engineer

Current

Mindscore

Sep 2023 - Present (3 years 1 month)

Built and deployed ML services for fraud detection, personalized cashback, RAG systems, social rating assessment, and LTV/churn models, improving business outcomes across fintech, retail, travel, and oil & gas.

PyTorch Hugging Face XGBoost CatBoost fastAPI MLFlow Recommendation Systems RAG Fraud Detection LTV Modeling Churn Prediction Feature Stores Microservices

Machine Learning Engineer, Intern

Mindscore

Jun 2023 - Aug 2023 (2 months)

Improved model accuracy by 15% through data preprocessing and feature engineering, cut pipeline execution time by 50%, and built real-time Grafana dashboards for ML model monitoring.

data preprocessing Feature Engineering Recommendation Systems Grafana Model Monitoring Performance Optimization

Intern, Reporting Support Department

JSC Tander

Feb 2022 - Jul 2022 (5 months)

Developed SQL queries to extract data from corporate data warehouses, prepared weekly reports on sales, purchases, and inventory, and provided technical support to employees.

SQL Data Extraction Reporting Technical Support