Documentation

Most fields are optional. If you don't have data for a particular field, leave it blank or omit it altogether.

name
Name of the staffer
link
(encouraged) Use link = m:User:YourName (WMF) to link to the staffer's global user page on meta-wiki, see the WMF-internal guide to creating a global user page.
username
(optional) If link is not set, links to User:username page on this wiki (if it exists). Most staffers should ignore this and focus on creating a nice global user page on meta-wiki.
position
Staffer's job title
team
(optional) Team name, if any
image
(optional) Image name
anchor
(optional) Override the url anchor to be something else than the name

Usage

Full empty version
{{staff member
| name = 
| link = 
| username = 
| position = 
| team = 
| image = 
}}
Example
{{staff member
| name = Marc-André Pelletier
| link = m:User:MPelletier (WMF)
| position = Operations Engineer - Tool Labs (International)
| image = Marc-Andre Pelletier Sept 2013.jpg
}}
This will display as