Rhauderman, 22, who began his career alongside Neymar in the Santos youth academy, agreed to join the Rio de Janeiro club for an undisclosed fee on Tuesday, Xinhua news agency reported.
According to the Globoesporte newspaper, Rhauderman is "trying to establish his professional career" after failing to impress during spells with Santos, Bangu and Cianorte.
Duque de Caxias also announced the signing of 29-year-old forward Flavio Caca-Rato from Guarani.
Rhauderman and Caca-Rato will be unavailable for their new club until their transfers are registered by the Brazilian football confederation.(IANS)