I've been using PHP with Symfony and Laravel the last 5 years and the ecosystem development has been promising and PHP has been improving with each version. The

I've been using PHP with Symfony and Laravel the last 5 years and the ecosystem development has been promising and PHP has been improving with each version. The freelance market is also great, though you have to pick the interesting projects as well (I usually don't do Wordpress or CMS-type stuff, but rather custom Web Apps or APIs). I've also worked a lot with Vue.js and currently with Angular. The two next big things I want to pick up are React with GraphQL and also Python (Flask and Django). I'm also very interested in longevity, and I think the mentioned technologies have good staying power (I've been burnt enough with AngularJS 1, bower, grunt, gulp, etc :-) ).