KASHGAR, China — Job seekers looking for opportunities in this ancient oasis town in China’s far western Xinjiang region would seem to have ample options, based on a quick glance at a local help-wanted Web site. The Kashgar Cultural Center has an opening for an experienced dance choreographer, the prefectural Communist Party office is hiring a driver and nearby Shule County needs an archivist.

But these and dozens of other job openings share one caveat: ethnic Uighurs, the Muslim, Turkic-speaking people who make up nearly 90 percent of Kashgar’s population, need not apply. Roughly half of the 161 positions advertised on the Civil Servant Examination Information Web site indicate that only ethnic Han Chinese or native Mandarin speakers will be considered.

Such discrimination, common across the region, is one of the many indignities China’s 10 million Uighurs face in a society that increasingly casts them as untrustworthy and prone to religious extremism. Uighurs are largely frozen out of the region’s booming gas and oil industry, airport jobs are mostly reserved for Han applicants, and truck drivers whose national identity cards list their ethnicity as Uighur cannot obtain the licenses required to haul fuel, an unwritten rule based on the fear that oil and gas tankers could easily be turned into weapons, according to several trucking companies.

Despite its name — the Xinjiang Uighur Autonomous Region — this strategically pivotal expanse of desert and snow-draped mountains that borders several Central Asian nations is tightly controlled by Beijing. Top government positions as well as critical spots in the sprawling security apparatus are dominated by Han Chinese, many of them recruited from the eastern half of the country.