We don't have synonyms for enginer yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are engineer, engine and engined.
(n) :
Misspelling of engineer. [(military, also figuratively) A soldier engaged in designing or constructing military works for attack or defence, or other engineering works.]
(n) :
Misspelling of engineer. [(military, also figuratively) A soldier engaged in designing or constructing military works for attack or defence, or other engineering works.]