PbMobile SDK Engineer (Android) /b /ppb Barcelona (Sant Joan Despí) | Hybrid (3 days remote) /b /ppbr/ppWe're looking for a Mobile SDK Engineer to build and maintain secure mobile SDKs for Android (Kotlin). /ppbr/ppThis is not a traditional mobile app development role focused on UI. You'll work on reusable SDKs that integrate with backend services and device-level capabilities such as NFC, BLE, and secure elements, requiring strong software engineering, security, and system design skills. /ppbr/ppbWhat you'll do /b /pulliDesign, develop, and maintain native mobile SDKs (Kotlin) /liliBuild sample/demo applications to validate SDK functionality /liliIntegrate mobile solutions with backend services (primarily Golang) /liliWork with NFC, BLE, secure elements, and other device-level capabilities /liliContribute to code reviews, TDD, E2E testing, and CI/CD improvements /liliParticipate in security reviews and secure software development practices /liliCollaborate in an Agile/Scrum environment with cross-functional teams /li /ulpbr/ppbWhat we're looking for /b /pulliStrong experience in Android (Kotlin) /liliSolid software engineering fundamentals and API design experience. /liliExperience building reusable libraries, frameworks, or SDKs. /liliInterest in security, system-level development, and complex integrations. /liliComfortable working beyond UI-focused mobile development. /liliStrong collaboration and problem-solving skills. /li /ulpbr/ppbNice to have /b /pulliGolang /liliKnowledge in iOS (Swift) /liliFlutter /liliNFC, BLE, Smart Cards /liliSecure Elements /liliRust /liliDocker /liliCI/CD pipelines /li /ulpbr/ppbWhy join us? /b /pulliWork on cutting-edge digital currency and security solutions. /liliInternational and collaborative team environment. /liliFlexible working model (3 remote days/week). /liliCareer development and continuous learning opportunities. /liliPrivate benefits, flexible compensation, canteen, and more. /li /ul