The Consumer Financial Protection Bureau’s new student loan watchdog is a former executive from a loan servicer that has repeatedly come under fire from government auditors — and even the consumer bureau itself — for a trail of serious mistakes.

The agency on Friday named Robert G. Cameron, previously a top compliance official at the Pennsylvania Higher Education Assistance Agency, as the bureau’s new ombudsman.

The ombudsman’s office is responsible for helping borrowers resolve issues with their lenders. Since the bureau’s creation, it has been the government’s loudest voice on monitoring problems in the $1.6 trillion student debt market. Most borrowers have federal loans, but the bureau said Mr. Cameron would focus on private student loans, which make up about 8 percent of the loans outstanding.

PHEAA is one of a handful of servicers paid by the Education Department to handle the government’s $1.5 trillion portfolio of federal loans and collect payments from nearly 43 million borrowers. Its FedLoan unit is the only servicer that works with borrowers in the Public Service Loan Forgiveness program, which has drawn widespread criticism for its complexity and its monthslong backlog for addressing errors.