What about "-naut" then?
Word formations such as "kubernaut" and "Djangonaut" are clearly formed by analogy with words like "cosmonaut" and "astronaut".
The latter combine the Greek words for universe and star (κόσμος and ἄστρον) with the Greek word for sailor (ναύτης).
An astronaut (ἄστρον ναύτης) is literally a "star sailor" although it's important to note that's not what it actually means. But it's clear how the coinage of the word relates to its component Greek parts.