Several of my roles in the civil service have been about community. My first was in the government digital service in 2014 as a community development manager for the fledgling service owner community. Originally written by Meg Pickard, I editted the community development handbook and framework for GOV.UK.
The communities I've helped with directly include:
Local government social media (lgovsm) 2011
One team government (OneTeamGov) 2017 onwards
Open data camp (ODCamp) 2015 to 2017
United Kingdom government camp (UKGovCamp) 2012 to 2019