https://portfolio.mdataservice.com/ Portfolio of Arjan Mahmuod — software engineer working across mobile, backend, web, machine learning and interactive design. Flutter, Spring Boot, Astro, PostgreSQL and deep learning for ECG signal analysis. en Sun, 30 Aug 2026 16:28:01 GMT https://portfolio.mdataservice.com/projects/ecg-af-detection https://portfolio.mdataservice.com/projects/ecg-af-detection Deep learning research on detecting atrial fibrillation in 12-lead ECG signals, and how detection behaves as the signal is resampled from 500 Hz down to 62 Hz. Thu, 01 Jan 2026 00:00:00 GMT research https://portfolio.mdataservice.com/projects/theory-app https://portfolio.mdataservice.com/projects/theory-app A Flutter application for working through structured theory material, backed by a Spring Boot service and a versioned PostgreSQL schema. Wed, 01 Jan 2025 00:00:00 GMT mobile https://portfolio.mdataservice.com/projects/pdf-guard https://portfolio.mdataservice.com/projects/pdf-guard A Python utility for inspecting, validating and protecting PDF documents in batch, built around a scriptable command-line interface. Wed, 01 Jan 2025 00:00:00 GMT tooling https://portfolio.mdataservice.com/projects/social-media-manager https://portfolio.mdataservice.com/projects/social-media-manager A Java desktop application for composing, organising and scheduling social media content from a single interface. Mon, 01 Jan 2024 00:00:00 GMT backend https://portfolio.mdataservice.com/projects/translation-service https://portfolio.mdataservice.com/projects/translation-service A production company website for HaskTolk AS with a modern frontend, service-focused content, and a secure document verification workflow. Thu, 01 Jan 2026 00:00:00 GMT web