Software Engineer (Kotlin, Core Experience)

Adyen; Chicago (IL); Hybrid; USD 120,000 - 170,000; Full time

Benefits offered by this job

Global exchange program

Weekly happy hour

Delicious healthy lunches

Phantom share package

Yearly trip to Amsterdam

Paid holidays

Work from home opportunities

Job summary

Adyen in Chicago seeks full‑time Kotlin Engineers to advance our in‑person payments solutions across Android and Linux terminals and backend systems.

You will contribute to Kotlin‑based business logic, Kotlin Multiplatform, and central C++ libraries, while integrating with various terminals and merchant SDKs. A strong focus on testing and cross‑functional collaboration is required.

Qualifications

• 5+ years of experience writing Kotlin code.
• Proficiency with Android SDK, Jetpack Compose, Coroutines, Gradle and DI.
• Experience in designing and maintaining automated unit/integration tests.
• Knowledge of C/C++ libraries is a plus, especially for cross‑platform modules.

Responsibilities

• Develop features for in‑person payments, supporting cards and mobile wallets.
• Build and maintain payment features for global merchants and terminals.
• Integrate with diverse cash registers and SDKs across platforms.
• Develop main business logic in Kotlin for Android/Linux terminals and backend; contribute to C++ libraries.
• Ensure robust quality with unit tests, integration tests, and end‑to‑end tests.

Skills

Kotlin

Android development

Jetpack Compose

Coroutines

Gradle

Dependency Injection

C/C++

Automated testing

Tools

Kotlin Multiplatform

Android SDK

Job description

• Adyen is looking for full-time Kotlin Engineers to help us develop our in-person payments solution
• We have a large and varied fleet of payment terminals and payment SDKs in the field, which we are continuously improving by adding new features and payment methods
• Kotlin development plays a vital role in this effort, as your code will be deployed across our various solutions using Kotlin Multiplatform
• As a Kotlin Engineer you will work on solutions for our payment terminals and payment SDKs featuring many capabilities, such as:
• Accepting payments using credit cards and debit cards, Apple Pay or Google Pay on mobile phones or accepting payments through QR codes
• Building and maintaining payment features for global merchants
• Integration with a variety of cash registers using state of the art standards
• You will be working on developing our main business logic in Kotlin, which will be deployed on both Android and Linux based payment terminals, and on our backend. You will also be contributing to C++ libraries that are central to our payment business logic
• Your code is tested using a variety of testing methods. These methods range from unit testing to complete product testing via automated programmable robots in order to offer a stable and feature rich solution to all of our merchants

Benefits

• Global exchange program
• Weekly happy hour
• Delicious healthy lunches
• Phantom share package
• Yearly trip to Amsterdam
• Paid holidays
• Work from home opportunities

Proactive in bringing great ideas to improve our solutionWilling to learn and improveA motivated, enthusiastic team player: collaborate with other engineers, product designers, and business stakeholdersAble to debug and solve problems within the Android application and collaborate effectively on cross-functional issuesHave a keen eye for detailFlexible, open to new ideasSelf-disciplined and enjoy working at a fast pace while managing and prioritizing goalsEnthusiastic to investigate new technical possibilities, yet able to work within existing frameworksAble to provide reliable and clearly understandable codeExperience in development of enterprise level SDKsExpert level knowledge of Kotlin, Android SDK, Jetpack Compose, Coroutines, Gradle, Dependency InjectionAbility and desire to mentor and grow other engineers through code reviews, design reviews, and over-the-shoulder debugging+5 years of experience writing code in KotlinExperience writing and maintaining a comprehensive suite of automated unit and integration testsExcellent verbal and written communication skills in EnglishA high level of personal accountability and a blend of strong technical skills, creative problem-solving, and a collaborative spiritProficiency in building software for the Android platformExperience in another non-JVM language, such as C or C++Experience with building libraries used by other engineersKnowledge about security best practices and standardsExperience working with Bluetooth-connected devicesExperience working in payment industry (This is a plus, not a must)