May 3, 2026

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

Senior • On-site

Wroclaw, Poland

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!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

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