Senior Mobile SDK Engineer (iOS/Android) — Remote-First

GK Software AG is seeking a Senior Mobile Developer (iOS/Android) to shape SDK components and the platform that powers a growing ecosystem of partner and customer apps. You will design APIs, contribute to frontend stack decisions, and work across mobile platforms using Swift and Kotlin.

The role emphasizes code quality, automated testing, and mentoring within an international, cross-functional team. A remote-first culture and flexible hours support work‑life balance while delivering scalable,