Manual QA Tester – Mobile Apps (f/m/x)

We are looking for an experienced Manual QA Tester to join Sii and work on an advanced mobile solution delivered in cooperation with a global organization from the energy and smart technology domain. The project combines Flutter-based mobile applications, IoT, and real hardware testing, giving you rare exposure to how software directly impacts physical devices and real-world systems. This is a 100% on-site role in Wrocław, designed for professionals who value close collaboration with developers, hands-on lab environments, and fast decision-making without remote barriers. If you are looking for a stable, long-term QA role with real product impact, we are waiting to meet you! Your tasks • Perform manual testing of Flutter-based mobile applications integrated with IoT devices, covering functional, regression, exploratory, and device‑specific scenarios on iOS and Android • Execute tests in lab and benchtop environments, including validation of data coming from sensors (e.g., temperature, pressure) and interaction with physical components • Design and maintain test scenarios reflecting real operating conditions, boundary cases, and performance constraints of embedded and IoT systems • Report, track, and verify defects with a strong focus on reproducibility, logs, device states, and hardware–software interaction • Collaborate closely with developers, engineers, and QA stakeholders to validate fixes, analyze quality risks, and support fast iteration cycles Requirements • At least 4 years of experience as a Manual QA Tester in mobile application projects • Strong understanding of iOS and Android platforms, including platform differences and Flutter-specific behavior • Hands-on experience in testing IoT or embedded solutions, including work with physical devices, sensors, or lab environments • Ability to design and execute tests involving hardware–software interaction, boundary conditions, and real operating scenarios • English proficiency at B2 level or higher, enabling effective communication and documentation • Fluent Polish required • Residing in Poland required