The number one point of Content Marketing for Professional Services is to convince people that you can be, and should be trusted. So if you want to get on, communicate your domain expertise, maybe with a nice newsletter once a month, to your colleagues (as well as your clients and such like). That way when the cool work comes up that you can help with, you get the gig.
Demonstrate Your Expertise When you're seen as an expert in your organization, you'll develop a reputation as someone who others can come to for help. This can lead to interesting work projects, as well as speaking and training opportunities, all of which increase your visibility.