The document is a job posting for a Software Developer in Test (SDET) position at a fast-growing cloud platform company. The SDET will join an international team building software used by millions worldwide on devices like TVs, phones, and computers. Responsibilities include extensive experience with test automation tools like Selenium and Cucumber, coding skills in PHP or C#, device testing, building test environments, and experience with agile workflows. The SDET will work closely with software engineers to create and maintain automated and manual test suites for different devices and mentor junior testers.