Android Developer (EDC)

About the Role
As an Android Developer (EDC), you will build and maintain Android-based payment applications on EDC terminals and mobile devices, from card reading and transaction processing to secure communication with host systems.

Responsibilities

• Develop Android-based EDC and mobile applications using Kotlin, Java, Android SDK, and Flutter.

• Implement payment solutions using ISO 8583, ISO 7816, APDU, EMV Contact & Contactless, and NFC.

• Integrate payment SDKs, card readers, printers, and other EDC hardware peripherals.

• Design application architecture using MVVM, Clean Architecture, Coroutines, and Jetpack.

• Implement local transaction storage, offline queuing, and transaction recovery using Room and SQLite.

• Develop secure payment features, including PIN Block generation, encryption, and key management.

• Integrate REST APIs and backend services for payment processing and transaction management.

• Apply software quality practices through unit testing, code reviews, Git workflows, and debugging.

Requirements

• Bachelor's degree in Computer Science, Informatics, or a related field.

• Minimum 3 years of experience in Android development using Kotlin and/or Java.

• Hands-on experience developing payment applications on EDC/POS terminals.

• Solid understanding of ISO 8583 and EMV (Contact & Contactless) transaction flows.

• Experience integrating hardware peripherals (card reader, printer, PIN pad) through vendor SDKs.

• Familiar with MVVM or Clean Architecture, Coroutines, Jetpack, and Room/SQLite.

• Experience with Git workflows, code reviews, and writing unit tests.

• Able to debug issues on physical devices and communicate clearly with cross-functional teams.