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# Senior Java/Kotlin Developer

- **Company:** Qualogy
- **Location:** Amsterdam, Netherlands
- **Experience:** Expert
- **Contract:** Contract
- **Skills:** Java (Programming Language), Automation of Tests, Microsoft Azure, Identity and Access Management, Postman, Backend, Kotlin, Playwright, Apache Kafka, Api Management
- **Published:** June 4, 2026
- **Apply:** https://www.qualogy.com/vacature/qa-engineer-java-kotlin-api-testing-playwright/

## About the Role

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## Description

We are looking for an experienced QA Automation Engineer to join our Payments team. In this role, you will be responsible for ensuring the meticulous testing of our Knox payment platform which handles all the payment flows for our checkout processes.

The Payments team have built the Knox payment platform in house and have been expanding it and the easily scalable test automation framework for the last few years. The future plans to roll out the platform to multiple other labels and brands within Ahold Delhaize require that the test automation stays lean, efficient and comprehensive.

By spearheading the test automation, you will play a crucial role in ensuring the reliability and performance of our systems.

Responsibilities:

Design, develop, and execute automated test plans and scripts for the Knox platform.

Keep the Kotlin based test automation for our Knox platform up to date and functioning.

Perform API, database and event testing to ensure the integrity and functionality of backend services.

Collaborate with development teams to identify test requirements and define test strategies.

Analyze test results and report findings to continuously improve product quality.

Contribute to the development and improvement of QA processes and methodologies.

Maintain documentation regarding test procedures and results.

Must have requirements:

5+ years of experience using a JVM based language such as Java, Kotlin, or similar.

5+ years of experience with automated testing of backend systems (particularly API testing).

Experience with setting up and maintaining performance tests of backend systems.

Experience using testing tools and frameworks such as Playwright, Postman, rest-Assured, or similar.

Excellent analytical and problem-solving skills.

Strong English communication skills and the ability to collaborate effectively within a multidisciplinary team.

Detail-oriented and able to work under pressure and meet deadlines.


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