Android Engineer

Job Title: Senior Android Engineer Payment SDK

Experience:

We are looking for an experienced Android Engineer with strong Kotlin expertise to own the end-to-end development, maintenance, and modernization of the Paymorrow Android Payment SDK.

The role involves developing secure payment solutions, integrating third-party libraries, supporting merchant integrations, and maintaining high standards of security, performance, and reliability.

Key Responsibilities

• Develop and maintain Android SDKs using Kotlin and Java.
• Implement payment features, including card tokenisation, hosted fields, and EMV 3-D Secure 2 (3DS2).
• Develop and maintain Android HCE functionality for girocard payments using the EKS IDM library.
• Integrate C++ components using Android NDK/JNI for device checks and attestation.
• Implement certificate-based backend communication and secure payment flows.
• Ensure PCI DSS compliance requirements are addressed in SDK development.
• Manage SDK packaging, versioning, testing, CI/CD, and releases.
• Support merchant integrations and troubleshoot technical issues.

Required Skills

• 5–8 years of native Android development experience with strong Kotlin and Java skills.
• Hands-on experience developing and distributing Android SDKs for third-party integrations.

• Mandatory: Practical Android HCE (Host Card Emulation) experience.

• Experience with payment security, EMV 3DS2, tokenisation, and PCI DSS.
• Knowledge of C++, Android NDK/JNI, certificate pinning, and device attestation.
• Experience with JUnit, Espresso/Robolectric, Gradle, and CI/CD.

Good to Have

• Experience with girocard, EKS IDM, NFC payments, and scheme certification.
• Knowledge of Android Keystore, hardware-backed security, and Google Pay.
• Experience with Java-to-Kotlin migration and merchant SDK support.

Key Skills: