Android Software Engineer – Payments SDK & Apps

Location: Spain (Madrid preferred) | Fully remote or hybrid | Multicultural team

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ABOUT THE ROLE

We are looking for an Android Software Engineer who wants to make a real impact and help take our payments platform to the next level, delivering value from day one.

Handpoint is singularly focused on providing the best payments platform for Point of Sale (POS) SaaS providers. We enable our partners to seamlessly integrate payment terminals through cloud-based and native integrations, including Android SDK, JavaScript SDK, Windows SDK, and REST APIs.

In this role, you'll work on two closely related fronts:
- Our Android/Kotlin Payments SDK, used by partners to run secure, reliable card-present payment flows on smartPOS and mPOS devices
- Android payment applications built on top of that SDK

Working on both gives you a unique view of the SDK from the inside and from the perspective of the developers who consume it.





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ROLE SCOPE

SDK-first ownership, with occasional backend collaboration to ensure end-to-end reliability:
- SDK & integrations: API design, device/payment flows, compatibility, quality, releases, and building Android apps on top of the SDK
- Platform enablement: coordination with backend teams, debugging end-to-end issues, improving observability and developer experience

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TECH STACK
- Languages: Kotlin (primary), Java (secondary), TypeScript (nice to have)
- Android app development: Jetpack Compose, MVVM, Kotlin Coroutines and Flow, Hilt/Dagger for dependency injection
- Android SDK/library development: Gradle, packaging/publishing, backwards compatibility
- Architecture & APIs: Client library design, clean architecture principles, REST integrations
- Payments context: Card-present flows, device integrations (smartPOS/mPOS), t

📌 Android Software Engineer | Payments SDK (España)
🏢 Handpoint
📍 España