V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RJE
       Remote Job Entry (IBM, Internet, RFC 407)


The Free On-line Dictionary of Computing (30 December 2018):

Remote Job Entry
RJE

    (RJE) A system, widely used in the mid/late
   1960s, for submitting jobs to mainframes like the IBM
   360 under OS/MFT.  Communication with the computer
   operator was via the keyboard and later via CRTs.

   (1999-03-26)