You don't need to learn React or Angular or another framework. Spend your time getting really good in your preferred stack of choice. That could be a framework

You don't need to learn React or Angular or another framework. Spend your time getting really good in your preferred stack of choice. That could be a framework or something of your own creation. Do not go to work for a company that only wants to hire people familiar with a specific framework. It's a huge red flag. The work will be boring and the team mediocre. More often than not there will also be culture issues. Great companies who have interesting projects will want to see what you've built in the past; the technology is just a tool. They will trust you to use the right tools for the job, and will respect you enough to let you pick those which you prefer. For legacy systems, it's helpful to have some experience but it's not like you won't be able to be effective if you're good given sufficient ramp up time. In my experience it's far better to hire the smart, motivated engineer who can actually get stuff done and has created high quality software before than someone who is an expert in a specific framework. Also I avoid going to tech conferences about web stuff, unless it's a legitimately new technology. A new way to organize your code and conventions are not new technology, it's just some guy's opinionated way of doing things. And most of the talks are less about conveying useful information that will help you and more about the speaker's ego and vanity.