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rayen03/README.md

Rayen Hassen

AI & ML Engineer — Turning raw data into production-grade intelligence.

From semantic embeddings to deployed APIs, I build systems that don't just predict — they perform.

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About Me

I'm a Software Engineering student (graduating engineer) with a focus on Machine Learning, NLP, and AI system deployment. I've shipped models into production, integrated LLMs into real business workflows, and conducted research at an international institution. I care about the full arc — from problem framing to deployed, documented, maintainable solutions.

  • Research intern at Manipal Institute of Technology, India — brain tumor segmentation, self-supervised learning
  • Built and integrated a GPT-4-powered assistant into a production application at an enterprise software firm
  • Certified by NVIDIA DLI in Transformer-Based NLP, Deep Learning, and Generative AI
  • Active in the AI community as a trainer and technical instructor

Tech Stack

Languages

Python JavaScript Java C# SQL

ML / AI / NLP

PyTorch TensorFlow HuggingFace Scikit-learn Keras Gensim spaCy

APIs & Deployment

FastAPI Flask Docker Streamlit Node.js

Tools

Git Jupyter VS Code


Featured Projects

Hybrid Recommender API

The Problem: Standard recommender systems rely on a single strategy — either collaborative filtering (who liked what) or content-based filtering (what is it). Each approach fails in isolation: cold-start for collaborative, over-specialization for content-based.

The Solution: A unified REST API that combines both approaches in a hybrid pipeline, routing inference based on data availability and context.

Stack: Python · FastAPI · Collaborative Filtering · Content-Based Filtering · Embeddings

  • Production-ready architecture with modular, extensible design supporting real-time inference
  • View Repository →

Tumor-Detect — Brain Tumor Segmentation

The Problem: Medical image segmentation requires models that are both accurate and interpretable — clinicians need to understand why a region was flagged, not just that it was flagged.

The Solution: A hybrid self-supervised pipeline (ConvMAE + BYOL) trained without full annotation dependency, augmented with Grad-CAM for visual explainability.

Stack: Python · PyTorch · TensorFlow · ConvMAE · BYOL · Grad-CAM

  • Achieved a Dice score of 0.94 — state-of-the-art benchmark for this segmentation task
  • Grad-CAM overlays provide clinician-interpretable heatmaps, directly addressing model trust in medical AI

Find-Flix — Semantic Search Engine

The Problem: Keyword-based search returns results that match text, not meaning. A search for "lonely astronaut" won't surface a film tagged only as "space isolation drama."

The Solution: A TF-IDF-based semantic mini search engine that ranks results by contextual relevance rather than raw keyword overlap.

Stack: Python · TF-IDF · NLP · Vectorization

  • Demonstrates core information retrieval and semantic similarity concepts that underpin production NLP systems
  • View Repository →

Beyond the Code

Experience ~1 year across research and enterprise internships
Domains Medical AI · Enterprise Software · Recommender Systems · NLP
Research International research at MIT India — published pipeline results in brain tumor segmentation
Teaching AI instructor at NATEG Issatso — designed and delivered hands-on training sessions
Community Organizing Committee Co-Lead, Info Plus FST Tunis · AIESEC Global Talent

Let's Connect

I'm open to AI/ML engineering roles, research collaborations, and freelance NLP projects — remote-friendly.

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@rayen03's activity is private