I'm Karim El Yaagoubi — a Software Engineer specializing in Flutter and Spring Boot, with proven experience shipping production mobile apps and developer tools used by thousands of users.
I'm a Software Engineer with a strong background in system design, backend development, and Semantic Web technologies. I focus on delivering scalable, maintainable solutions — from cross-platform mobile apps with Flutter to Spring Boot APIs and ontology-driven analytics pipelines.
I've shipped a production mobile application with 5,000+ installs and 50+ paying users on Google Play, maintained an open-source Flutter plugin adopted by the community, and designed end-to-end semantic pipelines for real-world biomedical data.
End-to-end Semantic Web pipeline for breast cancer analytics. Designed an OWL ontology, transformed structured CSV datasets to RDF, ran advanced SPARQL queries with triplestore benchmarking, and deployed an interactive cloud dashboard for biomedical analysis.
Production-ready Flutter mobile app for editing audio metadata. Integrated a custom Flutter plugin with native Android (Java) for efficient file processing. Implemented BLoC for scalable state management.
5,000+ installs · 50+ paying users · real revenue on Google Play.
Open-source Flutter plugin for reading and editing audio metadata. Built platform-specific Android code in Java, bridged via method channels. Supports MP3, M4A, FLAC, OGG, AIFF, WAV, and WMA with a clean Tag data model.
Flutter delivery management app integrated with a Spring Boot backend using GraphHopper for route optimization. JWT-based authentication secures communication between client and server, enabling efficient route planning.
Engineering degree — Data Science & Cloud Computing
Technology and Industrial Science — intensive math, physics, and engineering preparation.
I'm open to engineering roles, freelance collaborations, and interesting open-source work. The fastest way to reach me is by email.