So I have a Computer Science degree and about 5 years of experience working as a programmer (currently working as a backend software engineer) and my team leader asked me to find a subject that would interest me to learn.
This could be anything with a preferrence for something that can be in some way used in my work for the company. I've searched a bit but I have been having trouble picking (or even finding) something, mainly running into basic skills or technologies needed to be a programmer, most of which I know or are just boring to me now.

So do you have in mind any new or just interesting technologies you could recommend to me? (it could be anything really, like microservices, cloud, or just studying a linux distro). Thanks!