Senior QA Engineer — Hybrid (Remote/Onsite) in Global Tech Hub

Colliers is seeking a Senior QA Engineer for its newly established Technology Hub in Madrid. This hybrid role offers significant freedom to innovate and influence the future of a global real estate leader, working with international teams to deliver world-class software solutions. You will build and advance automated testing across frontend and backend, mentor engineers, and help define testing standards in a fast-paced, collaborative environment. Fluency in English and Spanish is required. J-1…