On May 21 HackerRank published a detailed library of in-demand technical skills. This directory came out with the objective to help in the creation of standardized interview process from the technical point of view. So after the required skills and competences being defined you as developer trying to get a job or as interviewer can be in the same page during the evaluation.
For every skills there are defined 3 different categories Basic, Intermediate and Advanced, and is detailed the require knowledge for every category. Among the skills we can find AWS, Node.js, Django, Docker, CSS, React and many more. Also some skills have their own subset of question, which is be very helpful in my opinion for newcomers that sometime struggling regarding to what they should learn, also this questions can help more experienced developers in how they should prepare before a job interview.
So if you are a searching for a job, are in charge of the interview process at some company or just simply want know what you should learn about some specific technology check this directory.