WMF has recently implemented a policy requiring role accounts with "WMF" in the name. See User:Tim Starling for my non-WMF user account. This account is used for all edits made on work time and is not intended as marker of authority.
Architecting platforms, etc.
Disclaimer: I work for or provide services to the Wikimedia Foundation, and this is the account I try to use for edits or statements I make in that role. However, the Foundation does not vet all my activity, so edits, statements, or other contributions made by this account may not reflect the views of the Foundation.