He was suffect consul in the nundinium of November-December AD 100 with Lucius Roscius Aelianus Maecius Celer as his colleague.
Originally a member of the equestrian class, Julianus held a series of appointments in the imperial service.
We only know of his last, as procurator, or governor, in Thracia; Nicolay Sharankov estimates his tenure was between the years 85 and 95.
Later he was admitted into the College of Pontiffs between the years 98 and 100, one of the four most prestigious ancient Roman priesthoods.
Julianus is mentioned in the Acta Arvalia, the records of the Arval Brethren, in 101 when he served as a magister,[4] but when the Acta Arvalia resume in 105 after a lacuna, his name is missing;[2] it is likely Julianus had died by that year.