The use of the term "fellow" suffers from ambiguity because it has two different meanings, depending upon its intended part of speech. To say a "fellow academician" is to use the word as an adjective whereby it means "belonging to the same class or group; united by the same occupation, interests, etc.; being in the same condition: fellow students; fellow sufferers." ~ dictionary.com But using "fellow" as a noun as in "That fellow standing in line" is unambiguously to refer to a male-coded human being. Thus to say a "Research Fellow" is clearly to use the term "fellow" to indicate a type of research position and, thus, to use it as an adjective: therefore it carries no gender implication. I have attempted to find an alternative adjective with the same meaning, but have been unable find one that works well in English.