Android Developer (Kotlin + Java + Jetpack + Reactive)

At 300 Software, we help companies transform the way they operate through custom software built by elite engineering teams. Our clients operate at global scale, and our teams work with autonomy, seniority, and a culture centered around trust and transparency. We’re hiring an **Android Developer** experienced in Kotlin, modern Android frameworks, and reactive programming. You will work in a **high\-traffic mobility platform** , developing new features, optimizing performance, and improving reliability for real users every day. Role is fully remote, long\-term contract, integrated with an international squad. **Must\-Have Skills** * Strong experience with **Android SDK** * Strong experience with **Kotlin** * Solid understanding of the **Android lifecycle** * Experience with **REST/JSON** * Experience with **Reactive Programming** (Coroutines, Flow, RxJava) * Experience with **offline storage, threading, performance tuning** * Git **Nice to Have** * Experience with multi\-module projects * Experience with Android Jetpack (Navigation, Room, ViewModel, LiveData) * CI/CD * Unit tests \& automation