How can I get more options to get work for ROR web development?

Is there any place where I can get good work for Ruby development?

There are a few jobs boards available. Even GoRails has one https://jobs.gorails.com/

It's also worth subscribing to newsletters such as Ruby Weekly and of course, creating a good LinkedIn will always help.

The key thing is to learn how to market and position yourself which makes the job hunt easier.