J. Rudolph was a mid-22nd century Starfleet officer.
In 2151, Rudolph was noted on the dedication plaque of the Enterprise NX-01 for her work in vehicle development. (Star Trek: Enterprise set artwork)
In January of 2155, Rudolph worked in ADCO at the Fleet Operations Center on Earth. Rudolph's office was located in room 1171. (ENT: "Demons" set artwork)
Rudolph's name was listed on the dedication plaque of the NX-01 and on directory listings seen on the set of "Demons".