Nogueira finished his studies in industrial engineering in 1964, and graduated with a degree in economics in 1975.

He was the leader of Unidade Galega (Galician Unity), a political party which eventually integrated in the BNG coalition.

At present he is member of the municipal council of his birth city of Vigo and Deputy in the Galician Parliament representing the BNG.

Nogueira is author of a number of publications on economics and politics in connection with the "Galician Question" (issues related to or having to do with Galicia).

[1][2] Since then, he has been considered a reintegrationist and was offered honorary membership of the AGAL (Galician Association of the Language), which he accepted.