A former managing director at Lehman Brothers, Robert Lieber, will replace Daniel Doctoroff as the city’s new deputy mayor for economic development on January 8, Mayor Bloomberg announced yesterday.

Since January, Mr. Lieber has served as the president of the city’s Economic Development Corporation, where he oversaw development plans that included the proposed redevelopment of Willets Point in Queens and of Coney Island.

“His skills and experience in the private sector and in city government will serve him well as he fills some very big shoes here at City Hall,” Mr. Bloomberg said at a press conference.

At Lehman Brothers, Mr. Lieber worked in private equity and served as the head of global real estate investment banking. He advised the city during negotiations between the Port Authority and the state government over the World Trade Center lease.

As deputy mayor for economic development, Mr. Lieber will oversee an array of city agencies, including the EDC; the Department of City Planning; the Department of Finance; the Department of Information Technology, and the Department of Housing Preservation and Development. While his predecessor, Mr. Doctoroff, shared the mayor’s practice of accepting a $1 annual salary, Mr. Lieber will be paid $196,000 a year.

Mr. Doctoroff announced earlier this month that he was leaving city government to take a position as president of the mayor’s financial information company, Bloomberg LP. During his six years in city government, Mr. Doctoroff spearheaded a number of large-scale developments and led the mayor’s unsuccessful bid to build a stadium on Manhattan’s West Side as part of an effort to host the 2012 Olympics.

Mr. Bloomberg also announced that Edward Skyler would take on a greater role as deputy mayor for operations, overseeing such agencies as the Department of Transportation and the Department of Buildings. Mr. Skyler previously served as press secretary to the mayor and was named deputy mayor for administration last year.