Summary
Guillaume Belouin is a senior mobile software engineer based in Paris with eight years of experience building and modernizing Android and iOS apps across industries from access control to public services. He excels at unifying cross-platform logic using Kotlin Multiplatform (KMP), migrating legacy stacks to modern architectures (Jetpack Compose, SwiftUI, MVVM) and optimizing on-device ML workflows such as photo upscaling models running locally. Practical and adaptable, he pairs solid architectural discipline with UI prototyping skills and a habit of continuous mobile tech watch. At Cheerz he led work to share business logic across Android, iOS and web, improved performance and simplified purchase flows—evidence of both hands-on coding and cross-team collaboration. Now at Swile, he continues to drive scalable mobile architectures while keeping a foot in design and UX tooling.
8 years of coding experience
10 years of employment as a software developer
BTS SIO SLAM, Programmation / développeur informatique, général, BTS SIO SLAM, Programmation / développeur informatique, général at Sainte-marie
Licence, Programmation / développeur informatique, général, Licence, Programmation / développeur informatique, général at ESAIP, École Supérieure Angevine en Informatique et Productique
French, English, Spanish