จป.ระดับวิชาชีพ (หลายอัตรา ด่วน)

Christiani & Nielsen has had a long history since Rudolf Christiani, a young Danish civil engineer, and Aage Nielsen, a Captain in the Royal Danish Navy, established the company in Copenhagen in 1904 to build bridges, marine works and other reinforced concrete structures. In less than five years, Christiani & Nielsen established a branch in Hamburg, Germany and, after World War I, further extended its operations across the United Kingdom, South America, Australia and Africa.