Linux in freelance and remote - what directions are there?

Question

linux

It's my turn to ask stupid questions and suffer self-determination :) I also wanted to join the professional world of IT and find a part-time job for hard currency and remotely.
About me: VO is not IT, but close (radio electronics). I know C a little from PL (the initial level, enough for arduino, but I don’t want to go deep because I’m not happy) and learned Python here (I liked the language, riveted a couple of programs to automate some kind of routine, screwed the GUI), but coding in full-time mode not mine ... On the other hand, I've been messing around with Linux for a lot of years. For over 10 years this has been my only desktop system. There is a little experience of "administration" in the 90s: enikey in a trading office + installation, configuration and support of a Linux server (web, mail, ftp, integration with samba). Well, from time to time, for friends and acquaintances, every little thing, such as installing and setting up a tench, installing Joomla-Wordpress, riveting a site on them, transferring the site, etc.
Now there is an opportunity to engage in self-education at the expense of working time. After weighing the pros and cons, I decided to delve deeper into Linux with the prospect of freelancing or remote work and, in the long term, immigration as an IT specialist. It is clear that this requires a higher level of knowledge of the subject than it is now, and some kind of narrow specialization.
Here is the question for people in the subject - what specializations for Linuxoid are currently available that are suitable for remote work; what is more in demand now and what will be in demand in the medium term? On which exchange sites should I look for such a job?
PS: I do not plan to become a super-duper unique specialist, a millionaire or billy gates, the goal is a stable influx of green papers.

Answer 1

Go to the upwork and look through the projects, it will help you sort things out in technologies/trends.

Answer 2

The coolest thing is DevOps,
but, judging by the description, you still have to grow and grow for many, many years to come.