ANDROID DEVELOPER WITH KOTLIN – Mid-Level (3+ years) Hybrid model at Porto, Portugal. Candidates must already be living in Portugal. Qualifications & Experience 3+ years in mobile development, mastery of native Android (Kotlin) Strong experience with Coroutines, Flows, concurrency and state management Knowledge of messaging systems (MQTT) Strong debugging skills Good practices in testing, code quality and technical review Good practices in GitHub and continuous integration Experience with hardware SDK integration (ideally scanner/RFID/barcode) Knowledge of EPC/GS1 and RFID reading filters Experience with Clean/MVVM architecture and modular libraries Knowledge of mobile CI/CD and feature flags Experience with limited connectivity/offline‐first environments Clear communication with technical and non‐technical teams End‐to‐end ownership (discovery, implementation, monitoring) Professional English level Residence located between Aveiro and Porto Driving license Hybrid remote work arrangement in São João da Madeira office Optional Additional Skills Experience with industrial RFID readers (e.g., Zebra/Bluebird) Benefits and Opportunities Personalized career development, tailored to your needs and goals Interesting challenges across multiple clients from diverse sectors Free training programs: languages, tech, behavior and business certifications International projects in Benelux for global experience Project types: Hybrid systems – balance work with socialization Full remote projects – work from home comfort Full onsite projects – collaborate with colleagues in person Well‐being support: free nutrition, psychology, general medicine appointments, yoga and personal training (remote) Equal Opportunity Statement At KCS we stand for equality and value diversity. We create a safe, diverse environment where opportunities are equal for everyone. We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit. All applications with skills for the role are welcome. #J-18808-Ljbffr