LIMA, Peru — Pedro Pablo Kuczynski was sworn in as Peru’s president Thursday with a Cabinet that shares his Ivy League, pro-business pedigree — a reliance on technocrats that could become a liability as he deals with an unfriendly Congress and a resurgent left.

The conservative Kuczynski has economics degrees from Oxford and Princeton and worked for decades on Wall Street and at the World Bank. His Cabinet reflects his preference for brains and the boardroom: It’s full of PhDs from foreign universities and former captains of Peruvian industry.

“I can’t remember in the country’s history such a pro-business Cabinet,” said Francisco Durand, who teaches political science at Lima’s Catholic University.

In his inaugural address, Kuczynski said his biggest goal, in addition to fighting drug trafficking and crime, will be delivering drinking water to the roughly 40 percent of Peruvians he said lack such basic services. He also vowed to make Peru a member of the Organization for Economic Cooperation and Development, the Paris-based group of mostly rich nations.

“We want to be seen by the world as a serious country, with a state that lives by its word, and has the best business environment of the continent,” Kuczynski told Congress in a 40-minute speech short on policy details. “I want Peru to be a beacon of civilization along the Pacific and in South America that everyone will look upon with admiration.”

But Peru is a big, hard-to-govern country with deep social divisions and analysts say the lack of political operators could become a problem for Kuczynski as he struggles to reverse an economic slowdown and build support beyond the capital’s elite. It doesn’t help that Peruvians call him the “gringo,” a reference to the U.S. passport and accent he acquired while living abroad.

At 77, Kuczynski is Peru’s oldest president. He was elected in a June runoff by the thinnest of margins, just 41,000 votes over Keiko Fujimori, the daughter of jailed former President Alberto Fujimori. His fledgling party secured just 18 of the 130 seats in Congress while the populist Fujimori has a solid majority of 73 lawmakers.

Even Peru’s left, which had been in the political wilderness for decades, has a larger bloc in congress. It’s likely to flex its newfound muscle after tilting the race in Kaczynski’s favor on the eve of the election by staging Peru’s largest protests in years to remind Peruvians of the corruption and criminality associated with the older Fujimori’s rule, warning that the ills would return with a victory by the jailed strongman’s daughter.

Despite the many challenges, there is not likely to be much policy gridlock initially, said Maria Lucia Puig, a Peruvian-born analyst for the Eurasia Group.

Although Kuczynski antagonized Fujimori during the campaign by telling voters she would usher in a “narco state” if elected, he has been conciliatory since and most members of what he calls his “deluxe” Cabinet aren’t seen as having political axes to grind. His prime minister, Fernando Zavala, headed the local affiliate of SABMiller while the Oxford-educated economy minister, Alfredo Thorne, worked for decades in finance.

Kuczynski and Fujimori also broadly share a conservative agenda, though with starkly different bases of support: The new president’s coming from the foreign-educated elite of Lima, Fujimori’s from the countryside where her father is still lionized for taming hyperinflation and a Maoist insurgency during his decade-long rule in the 1990s.