SDET (Software Development Engineer in Test) is a person who can equally be a part of development as well as the testing stage of software development and testing cycle. SDET will have impeccable knowledge in making the software robust, stable, and high in performance.
They are in high demand nowadays owing to this hybrid nature. Be it SMEs or big corporations, SDETs are in high demand.
the SDET role comes to bridge the gaps between various Agile team members, to have a person or couple of people who can assist with all the roles possible when needed with a focus on quality and testing.