For the next 2 or 3 years on frontend? Definitely React. Without a doubt. I am from Brazil and I am looking for a job right now in the US or remote. The sheer

For the next 2 or 3 years on frontend? Definitely React. Without a doubt. I am from Brazil and I am looking for a job right now in the US or remote. The sheer quantity of React positions everywhere makes it a certainty that the best time investment right now is React. Not a single doubt in my mind that this is true for the next 2-3 years. But don't neglect some fundamentals that count a lot for the best paying jobs. Back-end knowledge is one. It will be valuable for employers to know about at least one back-end for web tech (Rails, Django...), good SQL skills, some basic devops knowledge like continuous integration configuration, strong Javascript, etc.