Hello! I'm Emmanouil Athanasopoulos, a Computer Engineering graduate from the University of West Attica. I build high-performance mobile apps and web products with React Native, Next.js, Angular, and TypeScript — from idea to deployment.
Jan 2026
A comprehensive mobile app for tracking TV shows and movies via TMDB API. Features customized watchlists, push notifications for new episodes, and data backup.
An AI-powered vehicle management app. Track fuel, trips, maintenance, and expenses with voice logging, trip cost comparison, and gig worker support.
Writing & Case Studies
This portfolio brings together my projects and writing in one place. I use it to document the apps I build, why I chose a particular stack, and what I learned shipping real products. Each case study covers the motivation, features, implementation details, and stack tradeoffs behind a specific project — from native Android modules to real-time sync engines.
How I built a bilingual Expo map app for 4,700+ Greek gas stations—cheap-first discovery, real daily price history, and offline-friendly caching—backed by a GitHub Releases data pipeline instead of a paid backend.
How I extracted the Eortologio app's local nameday engine into a yearly GitHub Actions pipeline that publishes full-year Greek giortes calendars as offline JSON releases.
A technical deep dive into architecting an automated daily data pipeline that monitors 4,700+ gas stations across Greece, overcomes government CAPTCHAs via geospatial grid sampling, and uses Zstandard compression to shrink daily datasets by 90%.