Who is an SDET ( Software Developer Engineer in Test / Software Design Engineer in Test) ? Initially started at Microsoft many companies have these job titles these days. Watch a short video on how this role forms one step towards moving self organizing teams. A pure tester alone or developer alone role is fast fading and instead one needs to be a mix of both. End goal is to ship highest quality code just as in engineering , we cannot say that the bridge has only 50 % quality , the engineers lacked focus when it was built. Similarly SDET is redefining the software engineering practice.