Islem Aloui

Islem Aloui

Junior Data Scientist
Tunisia
English, Arabic, French
Internship Hybrid

About Me

Data Scientist with a Master's in Data Science and hands-on experience delivering models in a banking environment. Built and evaluated classification models on imbalanced multilingual data, designed the evaluation framew…

Experience

Data Scientist Intern

STB Bank · Carthage , Tunis , Tunisia
Feb 2026 - Aug 2026 · 6 months

<p>Raised classification Macro F1 to 0.82 by fine-tuning XLM-RoBERTa into a hierarchical pipeline — a 3-class router gating a 6-class minority model at a 0.80 confidence threshold — on 28k multilingual customer tickets (French, Arabic).</p><p> Corrected 84.7% single-class dominance through LLM-based augmentation and resampling, isolating a train-only export to close a data-leakage path that would have inflated test F1.</p><p> Designed the evaluation framework for a production RAG assistant, measuring faithfulness, answer relevancy, context recall and context precision over a 2,006-passage corpus and surfacing 3 systematic retrieval failure modes before deployment.</p><p> Analysed complaint volume and category distribution across 28k records to define the classification taxonomy and set per-class augmentation targets.</p><p> Built a banking assistant that autonomously resolved 70% of customer queries and routed the remainder to human agents through five confidence and keyword triggers.</p><p> Deployed models behind FastAPI and PostgreSQL, composing model output with deterministic domain rules, NLI validation and LLM arbitration for low-confidence cases.</p>

Computer Vision Intern

SUNEVIT · Sfax , Sfax , Tunisia
Feb 2024 - Jun 2024 · 4 months

<p>Deployed a real-time facial recognition and driver fatigue detection system on Raspberry Pi 4, reaching 92% detection accuracy at 16 FPS.</p><p> Built the end-to-end pipeline from data collection through to on-device inference, tuning model size against embedded memory limits to keep recognition under 200ms per frame.</p><p> Integrated the vision system with a mobile application for automatic seat adjustment, closing the loop from detection to physical vehicle actuation.</p>

Skills

Python SQL PostgreSQL MySQL MongoDB Power BI Tableau Scikit-learn PyTorch classification feature engineering model evaluation hyperparameter tuning imbalanced data handling Pandas NumPy exploratory data analysis data cleaning preprocessing Transformers XLM-RoBERTa LLMs RAG embeddings multilingual NLP FastAPI REST APIs WebSockets Docker Strapi Git real-time detection embedded inference on-device inference Matplotlib Seaborn
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