Android POS Engineer - Middle

- Architect, build, and maintain Android POS/payment apps (Java/Kotlin).
- Integrate payment SDKs, EMV/contactless/card systems, transit ticketing, SAM modules, secure elements, and encryption/decryption flows.
- Handle concurrency, background tasks, threading, and lifecycle-aware development.
- Develop offline-first architecture, local caching, syncing strategies, and robust error handling.
- Profile and debug to identify and resolve performance bottlenecks on constrained devices.
- Ensure high code quality using MVVM architecture, modular design, and clean architecture principles.
- Collaborate with Product, QA, Design, and Operations to deliver full end-to-end solutions.

- 2+ years of Android development experience using Java & Kotlin, with hands-on work on Android POS terminals or payment SDKs.Demonstrated experience with Android POS terminals or payment SDKs.
- Strong foundation in concurrency, background processing, and thread-safe programming.Expertise in performance optimization and debugging on resource-limited devices.
- Proven ability in performance optimization and debugging on resource-constrained devices.
- Solid experience architecting offline-first apps, implementing local caching and synchronization.
- Deep familiarity with Android Architecture Components (ViewModel, LiveData, Room), MVVM, and lifecycle management.
- Practical experience in EMV payments (both contact and contactless), transit ticketing/AFC systems, integrating SAM modules or secure elements, and building solutions in public transportation or embedded payment systems.Experience integrating SAM modules or secure elements.
- Solution-driven mindset, excelling in fast-paced, agile environments.
- Strong communication skills for seamless coordination across multi-disciplinary teams.
- Passion for clean, scalable, and maintainable code that sustains long-term project growth.