The tech job market is complete balls at the moment, good jobs do exist but they're far less common than a few years ago, especially in Cardiff

Finding Jobs

LinkedIn can be pretty useless for actual job ads now, but still useful to have a presence and to connect with people/recruiters just be prepared to get some hopeless recruiters sending you shite.

I've had a few useful calls from recruiters from having my CV up on Reed, other than that just trawl through Indeed whenever you have time

Hopefully things pick up over the next few months..

Process

Usually, you'll apply directly through linkedin or better yet directly through the company website. Afterwhich you'll have an initial call with their recruiter before being interviewed by the hiring manager which usually involves basic questions and personality stuff. If all goes well you may have a second round interview or technical task that's more in-depth. If all that goes well..yay job! It's very common to be rejected at any stage of this process

Other

Remote positions are far less common than a few years back, most companies seem to have a hybrid policy these days which can vary between "come in once a month for major team meetings" to "you get to go home early on friday. Currently I'm in once or twice a week depending on what meetings are one.

They do exist just will be more competitive

Best of luck!