this is so weird i was looking up the same thing (for a game i was playing) the answer was: journalist after searching under "ten letter occupations that end with 't' " i looked up " words that in 'ist' " and i found this site: http://wordnavigator.com/ends-with-by-length/ist/ i hope it helps!!!
Ticket Taker, Tree Trimmer, Tailor, Talent Scout, Tattooist, Tax Advisor, Taxi Driver, Taxidermist, Teacher, Telemarketer, Teller, Tennis Coach, Therapist, Ticket Agent, Toll Collector, Tombstone Carver, Tool and Die Maker, Tour Guide, Toy Maker, Translator, Trapeze Performer, Travel Agent, Treasurer, Treasury Agent, Tree Surgeon, Trial Lawyer, Trolley Car Operator, Trooper, Truant Officer, Truck Driver and Typist are occupations. They begin with the letter t.
usher
Optometrist
doorman
undertaker underwriter
Japayuki
zookeeper zoologist
lawyer
rADIOLOGIST
dentist
Teacher.
Kitchen Salesman/lady
occupational theripist (OT)