WordNet (r) 3.0 (2006):

filing clerk
    n 1: a clerk who is employed to maintain the files of an
         organization [syn: file clerk, filing clerk, filer]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "filing clerk":
   accountant, amanuensis, archivist, bookkeeper, clerk,
   documentalist, engraver, librarian, marker, notary, notary public,
   prothonotary, record clerk, recorder, recordist, register,
   registrar, scorekeeper, scorer, scribe, scrivener, secretary,
   stenographer, stonecutter, timekeeper