Assured Guaranty has appointed Christopher Mortello to the position of managing director of structured finance surveillance overseeing the company's asset-backed securities and residential mortgage-backed securities portfolios.

Mr Mortello, who previously spent over 10 years at Assured underwriting structured finance transactions, has returned to the company and he will now be focusing on portfolio surveillance, remediation and reporting for the structured finance portfolio.

Mr Mortello will report to chief surveillance officer, Andrew Pickering. He has over 18 years of experience in financial services, 14 of which were in asset securitization.

Most recently, he was head of ABS at PMI Guaranty and was responsible for developing, structuring and analyzing structured finance transactions for financial guaranty insurance, credit default swaps and reinsurance.

Mr Pickering said: We are very excited to have Chris re-join Assured in this new role that will focus on managing the ABS and RMBS surveillance activities.