Jun Byung-hun, a three-term lawmaker and former floor leader of the ruling Democratic Party, was appointed senior presidential secretary for political affairs.
Jun, 58, played an important role in Moon's election as chief of strategy at his campaign team. He served as policy chief, floor leader and a member of the Supreme Committee of the Democratic Party.
He will serve as a key communicator and coordinator between the presidential office Cheong Wae Dae and the National Assembly.
For the newly created position of senior presidential secretary for social innovation, the president appointed former civic activist Ha Seung-chang. Ha, 54, served as chairman of the social innovation team of Moon's election committee.
Kim Su-hyun, 53, was named as the senior presidential secretary for social affairs. He is a public policy professor at Sejong University and served as a former presidential secretary for social policy for late President Roh Moo-hyun.