Mobile Developer

Job Description This is a remote position. We are looking for an experienced Mobile Developer (Android + SDK Integration) to join a long-term project in the payments sector. The role focuses on developing Android applications and SDKs for payment terminals, integrating third-party vendor solutions, and applying Clean Architecture, SOLID principles, and strong testing practices in a high-compliance fintech environment. Responsibilities: • Develop Android applications and SDKs for payment terminals • Integrate third-party SDKs from major terminal vendors (Pax, Ingenico, Verifone, Sunmi, Castle) • Build responsive UIs with Jetpack Compose across varied screen sizes • Set up and maintain CI/CD pipelines (GitHub Actions) • Deliver internal SDKs for use across the product ecosystem • Apply Clean/Hexagonal Architecture, SOLID principles, and design patterns • Write unit tests and automated end-to-end test suites • Collaborate with developers, analysts, and French stakeholders in Agile teams Requirements • 4+ years of commercial experience in Android development • Strong proficiency with Kotlin (Java also accepted) and Jetpack Compose • Experience with SDK integration (ideally in payments/fintech) • Familiarity with Clean Architecture and SOLID principles • CI/CD setup experience (GitHub Actions or similar) • Testing mindset with unit and E2E automation experience • English fluency (C1), French language a plus Nice to have • Experience in payments or fintech systems • Knowledge of payment terminal providers (Pax, Ingenico, Verifone, Sunmi, Castle) • Prior experience building SDKs for internal or external developer use • Familiarity with mobile application security in financial services Benefits Solid, competitive salary Work in multilingual, multinational and multicultural environment on international projects Comprehensive healthcare Long-term B2B contract with stable project pipeline Remote working model (with possible trips to France for onboarding or workshops)