When I was doing firmware engineering, we had a lab assistant for the department that could do stuff like soldering rework, ordering parts, simple debug, running routine tests. It was kind of a catchall role that in much bigger companies might have dedicated people.

Also the office admin would help with things like routing paperwork for approvals, planning for travel, ordering meals for lunch meetings. When I was on a business trip and my plans got switch around mid trip, they coordinated all the changes to flights and hotels.