Contract (freelance B2B) role for a Senior QA Engineer with 4+ years of mobile QA experience and proven IoT testing experience. Responsibilities include compatibility, functional, performance and security testing of devices and connected systems (BLE, NFC, Wi‑Fi, Thread), mentoring, participating in requirements discussions, and using AI tools in daily workflow. Role is fully remote with flexible hours; initial freelance engagement may convert to a permanent contract after ~3 months depending on fit and business timing.

Lead and mentor the QA chapter, design and execute test strategies for mobile and IoT (BLE, cloud, firmware), introduce automation and CI/CD, and define quality metrics. Hands-on experience with Cypress, Appium, Postman, Robot Framework, test management (Qase/TestRail), Atlassian tools, and cloud platforms (AWS/Firebase). Fully remote with Warsaw office and Gdansk coworking; B2B contract, 26 days paid leave, medical care and development budget.