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y User

@yuser2

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Data scientist specializing in fraud detection, ABM simulation, and NLP model fine-tuning.

Colombia

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What I'm looking for

I seek roles applying fraud detection, NLP, and ABM skills in collaborative FinTech or research teams focused on impactful, well-documented ML solutions.

I am a data scientist with three years of hands-on experience building classification models, agent-based simulations, and synthetic data pipelines for fraud detection in FinTech.

I have trained and fine-tuned Hugging Face Transformer models for financial pattern detection and information extraction, automated Python pipelines (pandas, NumPy, scikit-learn) and applied best practices including Git, documentation, and code review.

I collaborate closely with product and risk teams to reduce false positives, evaluate models with ROC-AUC/PR-AUC and precision/recall metrics, and deliver reproducible, well-documented solutions that support operational decision-making.

Experience

Work history, roles, and key accomplishments

Data Scientist

FinCrime Dynamics

Jan 2023 - Oct 2025 (2 years 9 months)

Built and maintained classification models and automated Python pipelines for fraud detection, developed agent-based simulations and synthetic transaction networks, and fine-tuned Hugging Face models to detect financial patterns, reducing false positives through cross-functional collaboration.

Python scikit learn Random Forest Hugging Face PyTorch Synthetic Data Pandas Git

Research Assistant

Universidad EAFIT

Jan 2023 - Jun 2024 (1 year 5 months)

Implemented and optimized a C++ agent-based model to simulate dengue transmission, ran scenario experiments to analyze dynamics, and documented results to support research insights.

C Simulation Performance Optimization Research Collaboration Documentation Epidemiology