Hi, out of curiosity what tech stack have you used for your product and why ? btw kudos for your successes :)
PHP (Symfony), Angular, MySQL, Redis, Nginx
Of course it's not an entire list, but if there are any additional questions - ask, will try to clarify.
Can i ask what other languages/frameworks are common for web apps / dash boards ?
Sorry, maybe it does not answer your question?
We cant use PHP.
I'm not an expert here. To get the right picture, I would recommend searching for some kind of UpWork report. Like this - https://www.upwork.com/press/2018/05/01/q1-2018-skills-index...
But if you consider remote employees, you want have problems with any framework.