Software Engineer II - Core Experience

Responsibilities

• Develop and maintain Kotlin business logic for Android and Linux payment terminals, backend systems, and payment SDKs.
• Build payment capabilities supporting cards, Apple Pay, Google Pay, QR codes, and global merchants.
• Integrate payment solutions with cash registers using industry standards.
• Contribute to C++ libraries central to payment business logic.
• Write and maintain automated unit, integration, and complete product tests.
• Debug Android applications and collaborate with engineers, product designers, and business stakeholders.
• Mentor and grow engineers through code reviews, design reviews, and over-the-shoulder debugging.

Requirements

• At least five years of experience writing Kotlin code.
• Proficiency building software for Android and experience developing enterprise-level SDKs.
• Expert knowledge of Kotlin, Android SDK, Jetpack Compose, Coroutines, Gradle, and dependency injection.
• Experience maintaining comprehensive automated unit and integration test suites.
• Ability to communicate clearly in written and spoken English and collaborate effectively.
• Strong technical problem-solving skills, accountability, attention to detail, and willingness to mentor other engineers.
• Preferred experience with C or C++, libraries used by other engineers, security best practices and standards, Bluetooth-connected devices, or the payment industry.

Benefits

• Full-time role based in Adyen’s Chicago office.
• Office-first work arrangement with in-person collaboration; remote-only work is not offered.
• Adyen states that it aims to respond to applications within five business days and that interviews typically take about four weeks.