Re: too lazy for Let's Encrypt, a) last I used LE (for my personal site), your site had to be publicly available on the Internet so that you could prove you controlled the site. Most test servers are not public. and b) many (most?) companies would throw a fit if you started generating your own certificates for their domains.
But there are always solutions. I was able to talk my company into getting properly signed certs for our test servers.
I got news for you. If you're not a citizen of the country you're located in and you don't have a work visa for that country, you're probably working illegally, whether or not your employer realizes. (Some exceptions for EU citizens, Canada, etc.)