PartnerRe has appointed Costas Miranthis as its new president and chief operating office. Mr Miranthis will succeed Patrick Thiele as CEO, effective January 1, 2011.

The company previously announced Mr Thiele’s decision to retire, effective December 31, 2010. However, Mr Miranthis will maintain his current responsibilities until a successor is appointed.

Mr Miranthis, is currently CEO, PartnerRe Global, and is a member of the PartnerRe group executive committee. Appointed to his current role in May 2008, he is responsible for the executive management of the company’s life operations, all non-life reinsurance operations and support functions outside the US. In 2007, Mr Miranthis was appointed deputy CEO, PartnerRe global, and was responsible for the management of all global business units.

He joined the company in 2002 as chief actuary with responsibility for PartnerRe’s Actuarial and IT functions. Prior to joining PartnerRe, he spent 16 years with Tillinghast-Towers Perrin in London UK most recently as principal.

Mr Jean-Paul Montupet, chairman of the PartnerRe Board, said: The selection of Mr Miranthis as Mr Thiele’s successor is the result of a long-term succession planning process focused on ensuring PartnerRe’s next leader has the experience, skill sets and intellectual capital to lead the company forward, with the knowledge of the core values and strengths that make PartnerRe successful.

Howver, the appointment of Mr Miranthis is subject to approval by Bermuda immigration.