He resigned from his teaching position in 1973 to take up an appointment at the Research Bureau of the Ministry of Foreign Affairs as an assistant director grade II.
He embarked on many diplomatic missions, one of which allowed him to pursue a diploma in French, Literature, and Civilization from the University of Tours in Touraine.
[6] As a diplomat, he held several positions in several mission countries, such as First Secretary and Head of Chancery at the Ghana Embassy in Conakry, Guinea, and Charge D'Affaires in Togo.
[7] After 31 December 1981 coup d'etat in Ghana, he was recalled to the country and posted to the African and European Desk at the Research Department of the Ministry of Foreign Affairs, where he served from 1982 to 1984.
[9] In the 2008 parliamentary election Armah lost his bid for re-election to Catherine Afeku of the New Patriotic Party.
[1][10] When the New Patriotic Party won the 2000 general election, President John Agyekum Kufour appointed Armah as the Municipal Chief Executive for Nzema East District.
[14] He died on the same weekend and at the same hospital as Kofi Ansah, an internationally acclaimed Ghanaian fashion designer.