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