Well you can start by doing signature campaign bounty it's a sort of working for ico project and getting paid after for the services you render you can either get paid in bitcoin, ethereum on in the projects token
I found a Community Manager job for a cryptocurrency exchange platform, but I'm a contract worker. I started out taking in bitcoin as a payment till they decided to switch to USD. How did I land this job? You need to start participating in various online communities, build relationships, be yourself and you will get recognized. It took me a year to find this kind of job. Good luck!