Freelance Senior QA Engineer (Mobile)

• As a member of the Unzer Unified POS team, you will play a pivotal role in testing Unzer’s mobile POS applications for Android and iOS. You will focus on elevating service quality and ensuring seamless functionality.
• The mobile applications interact with a variety of hardware components, such as barcode scanners, receipt printers, and card payment terminals.
• Architect, develop, and maintain test automation using Sauce Labs, primarily with TypeScript.
• Design and maintain test plans for existing and new application features, and integrate them with Xray and Jira.
• Execute, maintain, and improve test cases in Xray, and enhance their integration into workflows.
• Test setups that include peripheral hardware such as card payment terminals, receipt printers, and barcode scanners.
• Test inter-device communication between multiple in-house applications, such as customer-facing displays or helper applications for gastronomy.
• Develop and maintain cross-team test scenarios, including API communication and database operations.
• Leverage AI Tools: Actively use and adapt AI tools in daily QA tasks, exploring innovative solutions and maintaining a curiosity-driven approach.
• Collaborate with developers and product owners to achieve optimal test coverage, focus on E2E multiplatform testing coverage but also system tests that reach a realistic experience of the customers & merchants.
• Engage in code reviews to uphold coding standards and improve overall code quality.
• Conduct Multi-Environment Testing: Execute tests across various environments to ensure robustness and compatibility.
• Current tech stack of the team:
• Current automation framework & language: TypeScript & Webdriver.io
• Tooling: Java based

Benefits

• Excellent working atmosphere in ambitious, diverse, and agile teams.
• Flexible working hours.
• A learning budget for personal development in addition to internal knowledge-sharing forums and best practice sharing. We want you to have the ability to learn something new every day!
• A hybrid work model allows you to keep work-life balance – you can work from home up to 80% of the time.
• A fast-paced work environment with the creative freedom to contribute to Unzer’s future.

Qualifications

• 4+ years of professional experience in mobile application testing (iOS and Android).
• Experience in release management and communication.
• Solid understanding of different types of APIs and experience testing them using tools such as Postman.
• Structured mindset with a proactive approach to test planning ahead of development.
• Experience writing automated tests and defining test scenarios throughout the development lifecycle, with most testing performed through automation.
• Experience in the fintech or payment industry, retail, or gastronomy POS is a strong plus.
• Strong knowledge of data structures and databases, particularly PostgreSQL and SQLite.
• Experience testing hardware devices and inter-device communication.
• Ability to work from our Berlin office twice a week to perform in-office device testing.
• Experience in test automation using TypeScript and platforms such as Sauce Labs, Appium, or similar.
• Experience with Test Case Design, including designing test plans and following industry standards.
• Experience with Playwright & Selenoid.