I am an AI, Full-Stack, and Data Analyst professional focused on building smart, data-driven solutions. I work with machine learning, software development, and data analytics to turn data into useful insights and practical applications. I enjoy solving real-world problems and building end-to-end solutions from data processing to deployment and visualization.

End-to-end, reproducible pipeline for fine-tuning YOLOv8-OBB on SAR imagery, including dataset extraction and validation, exploratory data analysis, annotation cleaning, DOTA-to-YOLO OBB conversion, optimized training, rigorous evaluation, and interactive Gradio deployment for accurate oriented vehicle detection on SIVED.

A lightweight end-to-end pipeline that fine-tunes Qwen2.5-VL-7B using LoRA adapters on an astronomy image-caption dataset, then deploys the adapted model via a Gradio interface, all with minimal GPU memory using 4-bit quantization.

Fine-tuning Llama 3.2 11B Vision on an astronomy image-caption dataset using Unsloth and LoRA, achieving domain-grounded visual descriptions in under 12 minutes of training on a free-tier Tesla T4 GPU.

A deep learning pipeline for detecting COVID-19 from chest X-rays using ResNet50V2 with Grad-CAM. The project covers data exploration, preprocessing, augmentation, model training, evaluation, and interpretability, demonstrating accurate, explainable classification across multiple radiography classes.

Compare three PyTorch image classification approaches - Custom CNN, DeiT-Tiny, and Xception with transfer learning - on vehicle data. Transfer learning improves accuracy, generalization, and reliability on small datasets, while training from scratch struggles with variance and real-world performance.

Deep learning sports ball classifier using InceptionV3 transfer learning. Features comprehensive data preprocessing, two-stage training, and FastAPI deployment. Includes data balancing, quality analysis, and rigorous evaluation metrics.

In this notebook, I build a high-accuracy Cat vs. Dog classifier using InceptionV3 and transfer learning. After thorough EDA and robust tf.data preprocessing, the model achieves ~99% test accuracy with strong generalization and no overfitting.

A deep learning pipeline for classifying brain tumor MRI images using InceptionV3 and Grad-CAM. Includes full preprocessing, augmentation, tf.data pipelines, transfer learning, evaluation metrics, and interpretable heatmaps for reliable medical image analysis.

Complete end-to-end audio classification pipeline using deep learning. From raw recordings to Mel spectrogram CNNs, includes preprocessing, augmentation, dataset validation, model training, and evaluation, a reproducible blueprint for speech, environmental, or general sound classification tasks.

This project builds an animal image classification system using TensorFlow and InceptionV3. It includes a full data-cleaning pipeline that detects corrupted images, duplicates, brightness issues, and mislabeled samples before training a transfer-learning model for accurate and reliable predictions.

A U-Net based CNN autoencoder designed to denoise noisy images before classification, improving input quality and boosting overall model accuracy.

TerraExplorer. A modern single-page web app that randomly explores countries, showing key info like flag, population, and region, along with AI-generated fun facts and dishes. Includes map view, history tracking, dark mode, and smooth animations, built with vanilla JavaScript and integrated with Google Gemini AI.

RehanPulse – A real-time developer dashboard that unifies GitHub activity, Vercel deployments, and Firebase project data into a single live-updating interface with alerts and a customizable experience, powered by an integrated LLM named “Pulse AI” to assist users with insights, automation, and intelligent support.

SpendMentra is a modern web app for managing personal finances. It lets users track income and expenses, categorize transactions, set financial goals, and view detailed reports. Built with React, Tailwind CSS, and Firebase, it offers secure authentication, real-time data storage, and a responsive design.

Power BI HR Analytics Dashboard built on the IBM Employee Attrition dataset (1,470 employees). Features 4 interactive dashboard pages, 50 DAX measures, 28 calculated columns, KPI tracking, salary analysis, satisfaction analysis, attrition risk scoring, and workforce insights to identify employee turnover drivers.

Omar Rehan’s Data Analysis Portfolio includes projects in Excel, Power BI, Tableau, Orange, and MongoDB covering data cleaning, visualization, dashboards, and machine learning (classification and clustering), plus e-commerce NoSQL design and analytics across sports, health, and city datasets with strong ML and visualization focus. added!

Designed and built an end-to-end retail analytics pipeline that transforms 10,000+ raw sales transactions into executive-ready insights. Leveraged Python, PostgreSQL, SQL, Machine Learning, Streamlit, Plotly, and Power BI to implement data ingestion, cleaning, warehousing, forecasting, customer segmentation, and interactive dashboards, enabling data-driven business decision-making.
Self-Employed / Independent Projects
Ajman, UAE
Jan 2022 - Present
Developed and delivered multiple academic and personal projects in AI, Machine Learning, Computer Vision, Full-Stack Development, and Software Engineering, applying end-to-end development practices from design and implementation to deployment and optimization.
Egyptian Armed Forces
North Sinai, Egypt
Apr 2024 - May 2025
Electronic Warfare Department – Egyptian Armed Forces
Arab Academy for Science, Technology & Maritime Transport (AASTMT)
Alexandria, Egypt
Oct 2023 - Feb 2024
Designed and developed an intelligent smart classroom system integrating AI, IoT, and embedded systems for real-time environment monitoring and automated device control.
Arab Academy for Science, Technology & Maritime Transport (AASTMT)
Studied core Computer Science subjects including programming, data structures, algorithms, databases, artificial intelligence, and software engineering. Gained strong analytical and problem-solving skills through academic coursework and practical projects.
February 20, 2024
Digital Hub
Completed digital transformation training program Track: Artificial Intelligence, Associate Level based IBM.
January 1, 2023
Digital Hub
Completed digital transformation training program Track: IoT, Associate Level based IBM.
January 1, 2023
CISCO
Cisco Networking Academy Certificates – Networking Fundamentals, Routing & Switching, IT Essentials.
January 1, 2022
View Certificate →HRDC (Cairo)
Certified in Soft Skills, including communication, teamwork, and problem-solving.
August 31, 2021
Cairo Impact Summit
As a Competitor in the Regional Finals, hosted at the 2021 Cairo Impact Summit.
April 1, 2021

A Power BI HR Analytics Dashboard built on the IBM Employee Attrition dataset. The project uses Power Query, DAX, Tabular Editor, and DAX Studio to analyze employee turnover, salary impact, overtime, satisfaction, and attrition risk across 1,470 employees through four interactive dashboard pages.

Built an end-to-end retail analytics pipeline using Python, PostgreSQL, SQL, and machine learning to analyze 9,994 sales transactions. Developed automated data cleaning, advanced analytics, forecasting models, and interactive dashboards (Tableau, Power BI, Plotly, Streamlit), generating actionable business insights and recommendations that identified opportunities to improve profitability by up to 68%.

Data Analyst with experience in Excel, Power BI, Tableau, Orange Data Mining, and MongoDB. My portfolio showcases projects in data cleaning, data modeling, dashboard development, machine learning, and NoSQL database design, transforming complex datasets into clear, actionable insights across domains such as healthcare, sports, demographics, sales, and e-commerce.

A vanilla JavaScript country explorer app with interactive maps, rich country data, and AI-generated insights for a simple and visual way to discover the world.

A complete end-to-end deep learning pipeline for vehicle detection in SAR imagery using YOLOv8-OBB on the SIVED dataset. The project covers data processing, exploratory analysis, oriented bounding box handling, model fine-tuning, evaluation, and deployment via a Gradio web app, achieving near state-of-the-art performance in a challenging radar-based detection setting.

RehanPulse is a real-time developer dashboard that centralizes activity from tools like GitHub, Vercel, and Firebase into a single interface. It delivers live updates on commits, CI pipelines, deployments, and alerts using Server-Sent Events and Firestore listeners, removing the need to switch between multiple tabs, and is built with modern technologies like Next.js and TypeScript.

Discussing building FinanceTracker, a secure personal finance app. Highlighting key choices in technology, authentication, and data security, showing how careful design ensures usability, privacy, and reliability for managing personal finances.

A compact, end-to-end guide to fine-tuning Qwen2.5-VL, a vision-language model, on astronomy-specific data using Unsloth, covering the full workflow from dataset preparation to training, with a focus on efficiency and minimal resource usage.

Fine-tuning Meta's Llama 3.2 11B Vision model on a 250-image astronomy dataset using Unsloth and LoRA, completing training in under 12 minutes on a free Tesla T4 GPU, producing a model that accurately describes astronomical images and is deployed via Gradio on Hugging Face.

A deep learning pipeline using transfer learning to classify chest X-rays into COVID-19, normal, viral pneumonia, and lung opacity. Includes data exploration, cleaning, augmentation, model training, evaluation with metrics like confusion matrices and ROC curves, and interpretability via Grad-CAM visualizations.

Comparing custom CNNs, Hugging Face vision transformers, and Xception transfer learning for vehicle classification, showing that transfer learning - especially Xception with two-phase fine-tuning - greatly outperforms training from scratch on small datasets.

A practical deep learning journey using transfer learning with InceptionV3 to classify sports balls. This project covers data cleaning, class balancing, preprocessing pipelines, two-stage training, and rigorous evaluation - highlighting why data quality and smart engineering matter more than model complexity.

High-accuracy InceptionV3 pipeline for cat vs. dog image classification with robust preprocessing.

End-to-end deep learning pipeline using InceptionV3 and Grad-CAM for accurate and interpretable brain tumor MRI classification.

Built an end-to-end audio classification pipeline using CNNs on Mel spectrograms, with data cleaning, augmentation, and deep learning for reliable multi-class predictions.

Built an animal image classification pipeline using TensorFlow and InceptionV3, focusing on thorough data cleaning, preprocessing, and transfer learning for accurate results.

A practical walkthrough of how I built and trained a deep-learning model to denoise images and boost classification performance.
I'm always open to new opportunities and interesting projects.
Feel free to reach out!