I've been a SDET for two months now, and I am fresh graduate. What I've experienced so far is that you have to have a good understanding of the product, the workflow and each scenario. Also you need to be a good dev for automation purposes and troubleshooting should not be a pain in the neck for you.
Communication skills will definitely come in handy since working based only on specs can sometimes mislead you in a very bad manner.
Communication skills will definitely come in handy since working based only on specs can sometimes mislead you in a very bad manner.