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

What we offer 

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas 

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market 

• We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more 

• Comfortable workplace – class A offices or remote work 

• Dozens of fascinating projects for prestigious brands from all over the world 

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers 

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose 

• Fantastic atmosphere created by all Sii Power People 

If you want to work on systems with high operational significance — apply now!