Seaton assumed the post Feb. 2 after Boeckman retired from the firm, Fluor announced Thursday.
Boeckman had served as non-executive board chairman for a year after serving nine years as Fluor’s chairman and CEO.
Seaton succeeded Boeckman in the CEO role in February 2011.
Seaton also serves on the board of Mosaic Co., a producer of nutrients for crop development.
Seaton serves as chairman of both the the University of South Carolina president’s initiative council and the university’s $1 billion capital campaign.