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Nikodim SvetlichnyiNS
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Nikodim Svetlichnyi

@nikodim_svetlichnyi

Data Scientist with 4 years of experience building production ML systems for fintech and quantitative analytics.

Spain
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What I'm looking for

I am seeking a data science/ML role where I can build interpretable, production-ready models with statistical rigor, collaborate cross-functionally, and grow into larger model- or product-focused responsibilities.

Data Scientist with 4 years of experience building production ML systems for fintech and quantitative analytics. Specialized in classical machine learning models with custom mathematical solutions, and anomaly detection. Strong focus on Explainable AI (XAI), model interpretability, robustness, and statistical rigor. Experience includes predictive modeling, fraud detection systems, and algorithmic trading strategies. M.Sc. in Intelligent Interactive Systems from Universitat Pompeu Fabra.

Experience

Work history, roles, and key accomplishments

FH
Current

Middle Data Scientist

Fintech Holding

May 2024 - Present (1 year 9 months)

Designed and deployed a production ensemble (XGBoost/CatBoost/LightGBM) achieving F1=0.84 and ROC-AUC=0.89 on 118K imbalanced samples, reducing false positives by 38% while serving 100K+ daily predictions with 99.7% uptime. Optimized feature pipeline to cut inference latency 2.8×, reduced feature space from 43 to 7, and delivered a 15% operational cost reduction for real-time predictions.

FH

Junior Data Scientist

Fintech Holding

Sep 2023 - May 2024 (8 months)

Developed LSTM forecasting (2 layers) improving prediction accuracy 18% vs baseline and an autoencoder for anomaly detection achieving 83% recall with 5.1% FPR. Implemented hybrid clustering and regression pipelines to enable segmentation and reduce feature space while maintaining model performance.

Education

Degrees, certifications, and relevant coursework

Universitat Pompeu Fabra logoUF

Universitat Pompeu Fabra

Master's degree, Intelligent Interactive Systems

2024 - 2025

Grade: 7.83 ! ACCELERATED 1-YEAR TRACK, FULL 2-YEAR CURRICULUM !

Activities and societies: Master program on Artificial Intelligence, Robotics & Autonomous Systems; Master Thesis: Robustness in Reinforcement Learning under Task-Uncertainty.

Completed an accelerated M.Sc. in Intelligent Interactive Systems covering AI, robotics and autonomous systems with a thesis on robustness in reinforcement learning under task uncertainty.

National Research University Higher School of Economics logoNE

National Research University Higher School of Economics

Bachelor's degree, Economics

2020 - 2024

Grade: 7.62

Activities and societies: Sailing Club Hermes; Bachelor thesis: Product Category Analysis and Optimization for the Lenta Online Store.

Completed a Bachelor of Economics with strong quantitative training in mathematics, statistics and econometrics and applied data analysis in Python; bachelor thesis on product category analysis and optimization.

UI

University of Artificial Intelligence

Deep Learning

2023 - 2023

Activities and societies: Practical training in AI fundamentals, hands-on Python exercises and practical case analyses.

Completed a short course on Deep Learning & Neural Networks covering practical machine learning and deep learning fundamentals with Python.

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Nikodim Svetlichnyi - Middle Data Scientist - Fintech Holding | Himalayas