Wszystko dzisiaj bardzo skomplikowane. A personal opinion: I abhor euphemisms like "sales associate", really a glorified name for a clerk. "technik obslugi turystycznej" is also a clerk: tourist services clerk. Soon we'll be calling a garbage collector "Sanitary Engineer - Mobile Division".
Tour Guide and Tour Asssitant are two other job descriptions to ponder.
This sounds like it may be considered a subset of the Hospitality Industry which includes Hotels, Resorts, Cruise Ships, Tourist Services, etc.
You cannot call a technik a technician unless the job involves something actually technical. There is nothing technical about a clerical, service-oriented position.