qa engineer (manual) for payment infrastructure

The company is an established European fintech company providing payment infrastructure to e-commerce and retail businesses across multiple countries. Its team supports mobile point-of-sale applications used by merchants in retail and hospitality settings.

• Test Android and iOS point-of-sale applications connected to card payment terminals, receipt printers, and barcode scanners;
• Build and maintain test automation in TypeScript integrated with the team's test management tooling;
• Design and maintain test plans for new and existing features and keep test case coverage up to date;
• Test communication between in-house applications, including customer-facing displays;
• Cover API and database testing across teams;
• Explore AI tools to support day-to-day QA work;
• Participate in code reviews and testing across multiple environments.

• 4+ Years of experience testing mobile applications on iOS and Android;
• Experience with test automation in TypeScript using tools such as Appium or similar cloud device testing platforms;
• Strong background in test case design and structured test planning;
• Solid knowledge of data structures and databases, particularly PostgreSQL and SQLite;
• Experience testing APIs, for example with Postman;
• Experience testing hardware devices and inter-device communication;
• Experience in release management;
• All candidates must be based in Germany and able to work B2B/as a contractor; those who cannot will not be considered;
• Nice to have: Fintech, payments, retail, or hospitality POS background, Playwright experience, Selenoid experience.

• Contract for 12 months;
• €400 Per day;
• Hybrid work with 2 days per week on-site in Berlin;
• Accessibility adjustments are available through the application or interview process.