SDET stands for Software Development Engineer in Test or Software Design Engineer in Test. Many companies are looking for SDET professionals who can participate in development of the automation testing and frameworks while the software being developed. Tester on the other hand can be a manual tester or quality analyst who does not participate in software development. SDET are often involved in developing the quality, robust and high performance code which is useful in automation of test cases or designing the testing framework which can be used as a testing tool. SDET also reviews the design and processes of the software product. Course Catelog: The FIRST day session is a FREE demo session.