Tuhia he haere tonu mo tenei irava - Mai i te 1959 ki te 1960, ko Shagari te Minita Federal mo te Whakawhanake Ohaoha o te motu motuhake o Nigeria i reira ko tana Manatū te kawenga mo te whakatakoto i te mahere whanaketanga 1962 <unk> 1968. Ko te Manatū Whakawhanake Ohaoha a Shagari te kawenga mo te hanganga o te Poari Whakawhanake o Niger-Delta. Mai i te 1960 ki te 1962, ko ia te Minita Federal mo nga Pension i mahi i te misioni o te Nigerianization o te mahi a te iwi. Mai i te 1962 ki te 1965, i hangaia a Shagari hei Minita Federal mo nga Take o roto. Mai i te tau 1965 tae noa ki te tīmatanga o te whakatikatika hōia i te marama o Hanuere 1966
Ko Shagari te Minita Federal mo nga Mahi, a he maha nga kaupapa nui i mahia e ia, tae atu ki te Eko Bridge Lagos, koinei te kirimana nui tuatahi a te kamupene hanga Tiamana a Julius Berger i Nigeria, me te otinga o te Niger Bridge i tukuna i te tau 1966 e te Pirimia, Sir Abubakar Tafawa Balewa. I te tau 1967 i tohua ia hei hēkeretari mo te Tahua Whakawhanake Mātauranga o te Rohe o Sokoto. Mai i te 1968 ki te 1969, i whakawhiwhia a Shagari ki tetahi tuunga o te kawanatanga ki te Tai Tokerau-Rawhiti hei Komihana mo nga Whakataunga.